chore(ui): refactor workspace to monorepo (#70)

## Summary by Sourcery

Refactor the UI project structure into a pnpm monorepo packages layout
and align tooling and automation with the new paths.

Enhancements:
- Reorganize the UI app from the root ui directory into packages/ui
within a pnpm workspace.
- Update pnpm workspace configuration to include all packages under
packages/*.
- Adjust paths in changeset configuration so the @dropout/ui package
resolves from packages/ui.

Build:
- Update pre-commit configuration paths and arguments to reflect the new
UI location and normalize hook argument formatting.
- Update Dependabot configuration so npm updates target /packages/ui
instead of /ui.

CI:
- Update GitHub Actions workflows to watch packages/** instead of ui/**
and to run frontend tasks from packages/ui.
- Update pnpm cache dependency paths in workflows to use the root
pnpm-lock.yaml.
- Simplify frontend install steps in test workflows to run from the
repository root.

Chores:
- Add a new index.html under packages/ui and remove the old
ui/index.html to match the new project layout.

15 files changed, 5194 insertions, 0 deletions

diff --git a/packages/ui/src/components/AssistantView.svelte b/packages/ui/src/components/AssistantView.svelte
new file mode 100644
index 0000000..54509a5
--- /dev/null
+++ b/packages/ui/src/components/AssistantView.svelte
@@ -0,0 +1,436 @@
+<script lang="ts">
+  import { assistantState } from '../stores/assistant.svelte';
+  import { settingsState } from '../stores/settings.svelte';
+  import { Send, Bot, RefreshCw, Trash2, AlertTriangle, Settings, Brain, ChevronDown } from 'lucide-svelte';
+  import { uiState } from '../stores/ui.svelte';
+  import { marked } from 'marked';
+  import { onMount } from 'svelte';
+
+  let input = $state('');
+  let messagesContainer: HTMLDivElement | undefined = undefined;
+
+  function parseMessageContent(content: string) {
+    if (!content) return { thinking: null, content: '', isThinking: false };
+    
+    // Support both <thinking> and <think> (DeepSeek uses <think>)
+    let startTag = '<thinking>';
+    let endTag = '</thinking>';
+    let startIndex = content.indexOf(startTag);
+    
+    if (startIndex === -1) {
+        startTag = '<think>';
+        endTag = '</think>';
+        startIndex = content.indexOf(startTag);
+    }
+    
+    // Also check for encoded tags if they weren't decoded properly
+    if (startIndex === -1) {
+        startTag = '\u003cthink\u003e';
+        endTag = '\u003c/think\u003e';
+        startIndex = content.indexOf(startTag);
+    }
+    
+    if (startIndex !== -1) {
+        const endIndex = content.indexOf(endTag, startIndex);
+        
+        if (endIndex !== -1) {
+            // Completed thinking block
+            // We extract the thinking part and keep the rest (before and after)
+            const before = content.substring(0, startIndex);
+            const thinking = content.substring(startIndex + startTag.length, endIndex).trim();
+            const after = content.substring(endIndex + endTag.length);
+            
+            return {
+                thinking,
+                content: (before + after).trim(),
+                isThinking: false
+            };
+        } else {
+            // Incomplete thinking block (still streaming)
+            const before = content.substring(0, startIndex);
+            const thinking = content.substring(startIndex + startTag.length).trim();
+            
+            return {
+                thinking,
+                content: before.trim(),
+                isThinking: true
+            };
+        }
+    }
+    
+    return { thinking: null, content, isThinking: false };
+  }
+
+  function renderMarkdown(content: string): string {
+    if (!content) return '';
+    try {
+      // marked.parse returns string synchronously when async is false (default)
+      return marked(content, { breaks: true, gfm: true }) as string;
+    } catch {
+      return content;
+    }
+  }
+
+  function scrollToBottom() {
+    if (messagesContainer) {
+      setTimeout(() => {
+        if (messagesContainer) {
+          messagesContainer.scrollTop = messagesContainer.scrollHeight;
+        }
+      }, 0);
+    }
+  }
+
+  onMount(() => {
+    assistantState.init();
+  });
+
+  // Scroll to bottom when messages change
+  $effect(() => {
+    // Access reactive state
+    const _len = assistantState.messages.length;
+    const _processing = assistantState.isProcessing;
+    // Scroll on next tick
+    if (_len > 0 || _processing) {
+      scrollToBottom();
+    }
+  });
+
+  async function handleSubmit() {
+    if (!input.trim() || assistantState.isProcessing) return;
+    const text = input;
+    input = '';
+    const provider = settingsState.settings.assistant.llm_provider;
+    const endpoint = provider === 'ollama' 
+      ? settingsState.settings.assistant.ollama_endpoint 
+      : settingsState.settings.assistant.openai_endpoint;
+    await assistantState.sendMessage(
+      text, 
+      settingsState.settings.assistant.enabled,
+      provider,
+      endpoint
+    );
+  }
+
+  function handleKeydown(e: KeyboardEvent) {
+    if (e.key === 'Enter' && !e.shiftKey) {
+      e.preventDefault();
+      handleSubmit();
+    }
+  }
+
+  function getProviderName(): string {
+    const provider = settingsState.settings.assistant.llm_provider;
+    if (provider === 'ollama') {
+      return `Ollama (${settingsState.settings.assistant.ollama_model})`;
+    } else if (provider === 'openai') {
+      return `OpenAI (${settingsState.settings.assistant.openai_model})`;
+    }
+    return provider;
+  }
+
+  function getProviderHelpText(): string {
+    const provider = settingsState.settings.assistant.llm_provider;
+    if (provider === 'ollama') {
+      return `Please ensure Ollama is installed and running at ${settingsState.settings.assistant.ollama_endpoint}.`;
+    } else if (provider === 'openai') {
+      return "Please check your OpenAI API key in Settings > AI Assistant.";
+    }
+    return "";
+  }
+</script>
+
+<div class="h-full w-full flex flex-col gap-4 p-4 lg:p-8 animate-in fade-in zoom-in-95 duration-300">
+  <div class="flex items-center justify-between mb-2">
+    <div class="flex items-center gap-3">
+      <div class="p-2 bg-indigo-500/20 rounded-lg text-indigo-400">
+        <Bot size={24} />
+      </div>
+      <div>
+        <h2 class="text-2xl font-bold">Game Assistant</h2>
+        <p class="text-zinc-400 text-sm">Powered by {getProviderName()}</p>
+      </div>
+    </div>
+    
+    <div class="flex items-center gap-2">
+       {#if !settingsState.settings.assistant.enabled}
+        <div class="flex items-center gap-2 px-3 py-1.5 bg-zinc-500/10 text-zinc-400 rounded-full text-xs font-medium border border-zinc-500/20">
+            <AlertTriangle size={14} />
+            <span>Disabled</span>
+        </div>
+       {:else if !assistantState.isProviderHealthy}
+        <div class="flex items-center gap-2 px-3 py-1.5 bg-red-500/10 text-red-400 rounded-full text-xs font-medium border border-red-500/20">
+            <AlertTriangle size={14} />
+            <span>Offline</span>
+        </div>
+       {:else}
+        <div class="flex items-center gap-2 px-3 py-1.5 bg-emerald-500/10 text-emerald-400 rounded-full text-xs font-medium border border-emerald-500/20">
+            <div class="w-2 h-2 rounded-full bg-emerald-500 animate-pulse"></div>
+            <span>Online</span>
+        </div>
+       {/if}
+
+       <button 
+         onclick={() => assistantState.checkHealth()}
+         class="p-2 hover:bg-white/5 rounded-lg text-zinc-400 hover:text-white transition-colors"
+         title="Check Connection"
+       >
+         <RefreshCw size={18} class={assistantState.isProcessing ? "animate-spin" : ""} />
+       </button>
+       
+       <button 
+         onclick={() => assistantState.clearHistory()}
+         class="p-2 hover:bg-white/5 rounded-lg text-zinc-400 hover:text-white transition-colors"
+         title="Clear History"
+       >
+         <Trash2 size={18} />
+       </button>
+
+       <button 
+         onclick={() => uiState.setView('settings')}
+         class="p-2 hover:bg-white/5 rounded-lg text-zinc-400 hover:text-white transition-colors"
+         title="Settings"
+       >
+         <Settings size={18} />
+       </button>
+    </div>
+  </div>
+
+  <!-- Chat Area -->
+  <div class="flex-1 bg-black/20 border border-white/5 rounded-xl overflow-hidden flex flex-col relative">
+    {#if assistantState.messages.length === 0}
+      <div class="absolute inset-0 flex flex-col items-center justify-center text-zinc-500 gap-4 p-8 text-center">
+        <Bot size={48} class="opacity-20" />
+        <div class="max-w-md">
+            <p class="text-lg font-medium text-zinc-300 mb-2">How can I help you today?</p>
+            <p class="text-sm opacity-70">I can analyze your game logs, diagnose crashes, or explain mod features.</p>
+        </div>
+        {#if !settingsState.settings.assistant.enabled}
+            <div class="bg-zinc-500/10 border border-zinc-500/20 rounded-lg p-4 text-sm text-zinc-400 mt-4 max-w-sm">
+                Assistant is disabled. Enable it in <button onclick={() => uiState.setView('settings')} class="text-indigo-400 hover:underline">Settings > AI Assistant</button>.
+            </div>
+        {:else if !assistantState.isProviderHealthy}
+            <div class="bg-red-500/10 border border-red-500/20 rounded-lg p-4 text-sm text-red-400 mt-4 max-w-sm">
+                {getProviderHelpText()}
+            </div>
+        {/if}
+      </div>
+    {/if}
+
+    <div 
+        bind:this={messagesContainer}
+        class="flex-1 overflow-y-auto p-4 space-y-4 scroll-smooth"
+    >
+      {#each assistantState.messages as msg, idx}
+        <div class="flex gap-3 {msg.role === 'user' ? 'justify-end' : 'justify-start'}">
+          {#if msg.role === 'assistant'}
+            <div class="w-8 h-8 rounded-full bg-indigo-500/20 flex items-center justify-center text-indigo-400 shrink-0 mt-1">
+              <Bot size={16} />
+            </div>
+          {/if}
+          
+          <div class="max-w-[80%] p-3 rounded-2xl {msg.role === 'user' ? 'bg-indigo-600 text-white rounded-tr-none' : 'bg-zinc-800/50 text-zinc-200 rounded-tl-none border border-white/5'}">
+            {#if msg.role === 'user'}
+              <div class="break-words whitespace-pre-wrap">
+                {msg.content}
+              </div>
+            {:else}
+              {@const parsed = parseMessageContent(msg.content)}
+              
+              <!-- Thinking Block -->
+              {#if parsed.thinking}
+                  <div class="mb-3 max-w-full overflow-hidden">
+                      <details class="group" open={parsed.isThinking}>
+                          <summary class="list-none cursor-pointer flex items-center gap-2 text-zinc-500 hover:text-zinc-300 transition-colors text-xs font-medium select-none bg-black/20 p-2 rounded-lg border border-white/5 w-fit mb-2 outline-none">
+                              <Brain size={14} />
+                              <span>Thinking Process</span>
+                              <ChevronDown size={14} class="transition-transform duration-200 group-open:rotate-180" />
+                          </summary>
+                          <div class="pl-3 border-l-2 border-zinc-700 text-zinc-500 text-xs italic leading-relaxed whitespace-pre-wrap font-mono max-h-96 overflow-y-auto custom-scrollbar bg-black/10 p-2 rounded-r-md">
+                              {parsed.thinking}
+                              {#if parsed.isThinking}
+                                  <span class="inline-block w-1.5 h-3 bg-zinc-500 ml-1 animate-pulse align-middle"></span>
+                              {/if}
+                          </div>
+                      </details>
+                  </div>
+              {/if}
+
+              <!-- Markdown rendered content for assistant -->
+              <div class="markdown-content prose prose-invert prose-sm max-w-none">
+                {#if parsed.content}
+                  {@html renderMarkdown(parsed.content)}
+                {:else if assistantState.isProcessing && idx === assistantState.messages.length - 1 && !parsed.isThinking}
+                  <span class="inline-flex items-center gap-1">
+                    <span class="w-2 h-2 bg-zinc-400 rounded-full animate-pulse"></span>
+                    <span class="w-2 h-2 bg-zinc-400 rounded-full animate-pulse" style="animation-delay: 0.2s"></span>
+                    <span class="w-2 h-2 bg-zinc-400 rounded-full animate-pulse" style="animation-delay: 0.4s"></span>
+                  </span>
+                {/if}
+              </div>
+
+              <!-- Generation Stats -->
+              {#if msg.stats}
+                <div class="mt-3 pt-3 border-t border-white/5 text-[10px] text-zinc-500 font-mono flex flex-wrap gap-x-4 gap-y-1 opacity-70 hover:opacity-100 transition-opacity select-none">
+                    <div class="flex gap-1" title="Tokens generated">
+                        <span>Eval:</span>
+                        <span class="text-zinc-400">{msg.stats.eval_count} tokens</span>
+                    </div>
+                    <div class="flex gap-1" title="Total duration">
+                        <span>Time:</span>
+                        <span class="text-zinc-400">{(msg.stats.total_duration / 1e9).toFixed(2)}s</span>
+                    </div>
+                    {#if msg.stats.eval_duration > 0}
+                        <div class="flex gap-1" title="Generation speed">
+                            <span>Speed:</span>
+                            <span class="text-zinc-400">{(msg.stats.eval_count / (msg.stats.eval_duration / 1e9)).toFixed(1)} t/s</span>
+                        </div>
+                    {/if}
+                </div>
+              {/if}
+            {/if}
+          </div>
+        </div>
+      {/each}
+    </div>
+
+    <!-- Input Area -->
+    <div class="p-4 bg-zinc-900/50 border-t border-white/5">
+      <div class="relative">
+        <textarea
+          bind:value={input}
+          onkeydown={handleKeydown}
+          placeholder={settingsState.settings.assistant.enabled ? "Ask about your game..." : "Assistant is disabled..."}
+          class="w-full bg-black/20 border border-white/10 rounded-xl py-3 pl-4 pr-12 focus:outline-none focus:border-indigo-500/50 focus:ring-1 focus:ring-indigo-500/50 resize-none h-[52px] max-h-32 transition-all text-white disabled:opacity-50"
+          disabled={assistantState.isProcessing || !settingsState.settings.assistant.enabled}
+        ></textarea>
+        
+        <button
+          onclick={handleSubmit}
+          disabled={!input.trim() || assistantState.isProcessing || !settingsState.settings.assistant.enabled}
+          class="absolute right-2 top-2 p-2 bg-indigo-600 hover:bg-indigo-500 disabled:opacity-50 disabled:hover:bg-indigo-600 text-white rounded-lg transition-colors"
+        >
+          <Send size={16} />
+        </button>
+      </div>
+    </div>
+  </div>
+</div>
+
+<style>
+  /* Markdown content styles */
+  .markdown-content :global(p) {
+    margin-bottom: 0.5rem;
+  }
+  
+  .markdown-content :global(p:last-child) {
+    margin-bottom: 0;
+  }
+  
+  .markdown-content :global(pre) {
+    background-color: rgba(0, 0, 0, 0.4);
+    border-radius: 0.5rem;
+    padding: 0.75rem;
+    overflow-x: auto;
+    margin: 0.5rem 0;
+  }
+  
+  .markdown-content :global(code) {
+    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
+    font-size: 0.85em;
+  }
+  
+  .markdown-content :global(pre code) {
+    background: none;
+    padding: 0;
+  }
+  
+  .markdown-content :global(:not(pre) > code) {
+    background-color: rgba(0, 0, 0, 0.3);
+    padding: 0.15rem 0.4rem;
+    border-radius: 0.25rem;
+  }
+  
+  .markdown-content :global(ul),
+  .markdown-content :global(ol) {
+    margin: 0.5rem 0;
+    padding-left: 1.5rem;
+  }
+  
+  .markdown-content :global(li) {
+    margin: 0.25rem 0;
+  }
+  
+  .markdown-content :global(blockquote) {
+    border-left: 3px solid rgba(99, 102, 241, 0.5);
+    padding-left: 1rem;
+    margin: 0.5rem 0;
+    color: rgba(255, 255, 255, 0.7);
+  }
+  
+  .markdown-content :global(h1),
+  .markdown-content :global(h2),
+  .markdown-content :global(h3),
+  .markdown-content :global(h4) {
+    font-weight: 600;
+    margin: 0.75rem 0 0.5rem 0;
+  }
+  
+  .markdown-content :global(h1) {
+    font-size: 1.25rem;
+  }
+  
+  .markdown-content :global(h2) {
+    font-size: 1.125rem;
+  }
+  
+  .markdown-content :global(h3) {
+    font-size: 1rem;
+  }
+  
+  .markdown-content :global(a) {
+    color: rgb(129, 140, 248);
+    text-decoration: underline;
+  }
+  
+  .markdown-content :global(a:hover) {
+    color: rgb(165, 180, 252);
+  }
+  
+  .markdown-content :global(table) {
+    border-collapse: collapse;
+    margin: 0.5rem 0;
+    width: 100%;
+  }
+  
+  .markdown-content :global(th),
+  .markdown-content :global(td) {
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    padding: 0.5rem;
+    text-align: left;
+  }
+  
+  .markdown-content :global(th) {
+    background-color: rgba(0, 0, 0, 0.3);
+    font-weight: 600;
+  }
+  
+  .markdown-content :global(hr) {
+    border: none;
+    border-top: 1px solid rgba(255, 255, 255, 0.1);
+    margin: 1rem 0;
+  }
+  
+  .markdown-content :global(img) {
+    max-width: 100%;
+    border-radius: 0.5rem;
+  }
+  
+  .markdown-content :global(strong) {
+    font-weight: 600;
+  }
+  
+  .markdown-content :global(em) {
+    font-style: italic;
+  }
+</style>
diff --git a/packages/ui/src/components/BottomBar.svelte b/packages/ui/src/components/BottomBar.svelte
new file mode 100644
index 0000000..19cf35d
--- /dev/null
+++ b/packages/ui/src/components/BottomBar.svelte
@@ -0,0 +1,250 @@
+<script lang="ts">
+  import { invoke } from "@tauri-apps/api/core";
+  import { listen, type UnlistenFn } from "@tauri-apps/api/event";
+  import { authState } from "../stores/auth.svelte";
+  import { gameState } from "../stores/game.svelte";
+  import { uiState } from "../stores/ui.svelte";
+  import { instancesState } from "../stores/instances.svelte";
+  import { Terminal, ChevronDown, Play, User, Check } from 'lucide-svelte';
+
+  interface InstalledVersion {
+    id: string;
+    type: string;
+  }
+
+  let isVersionDropdownOpen = $state(false);
+  let dropdownRef: HTMLDivElement;
+  let installedVersions = $state<InstalledVersion[]>([]);
+  let isLoadingVersions = $state(true);
+  let downloadCompleteUnlisten: UnlistenFn | null = null;
+  let versionDeletedUnlisten: UnlistenFn | null = null;
+
+  // Load installed versions on mount
+  $effect(() => {
+    loadInstalledVersions();
+    setupEventListeners();
+    return () => {
+      if (downloadCompleteUnlisten) {
+        downloadCompleteUnlisten();
+      }
+      if (versionDeletedUnlisten) {
+        versionDeletedUnlisten();
+      }
+    };
+  });
+
+  async function setupEventListeners() {
+    // Refresh list when a download completes
+    downloadCompleteUnlisten = await listen("download-complete", () => {
+      loadInstalledVersions();
+    });
+    // Refresh list when a version is deleted
+    versionDeletedUnlisten = await listen("version-deleted", () => {
+      loadInstalledVersions();
+    });
+  }
+
+  async function loadInstalledVersions() {
+    if (!instancesState.activeInstanceId) {
+      installedVersions = [];
+      isLoadingVersions = false;
+      return;
+    }
+    isLoadingVersions = true;
+    try {
+      installedVersions = await invoke<InstalledVersion[]>("list_installed_versions", {
+        instanceId: instancesState.activeInstanceId,
+      });
+      // If no version is selected but we have installed versions, select the first one
+      if (!gameState.selectedVersion && installedVersions.length > 0) {
+        gameState.selectedVersion = installedVersions[0].id;
+      }
+    } catch (e) {
+      console.error("Failed to load installed versions:", e);
+    } finally {
+      isLoadingVersions = false;
+    }
+  }
+
+  let versionOptions = $derived(
+    isLoadingVersions 
+      ? [{ id: "loading", type: "loading", label: "Loading..." }]
+      : installedVersions.length === 0
+        ? [{ id: "empty", type: "empty", label: "No versions installed" }]
+        : installedVersions.map(v => ({
+            ...v,
+            label: `${v.id}${v.type !== 'release' ? ` (${v.type})` : ''}`
+          }))
+  );
+
+  function selectVersion(id: string) {
+    if (id !== "loading" && id !== "empty") {
+      gameState.selectedVersion = id;
+      isVersionDropdownOpen = false;
+    }
+  }
+
+  function handleClickOutside(e: MouseEvent) {
+    if (dropdownRef && !dropdownRef.contains(e.target as Node)) {
+      isVersionDropdownOpen = false;
+    }
+  }
+
+  $effect(() => {
+    if (isVersionDropdownOpen) {
+      document.addEventListener('click', handleClickOutside);
+      return () => document.removeEventListener('click', handleClickOutside);
+    }
+  });
+
+  function getVersionTypeColor(type: string) {
+    switch (type) {
+      case 'fabric': return 'text-indigo-400';
+      case 'forge': return 'text-orange-400';
+      case 'snapshot': return 'text-amber-400';
+      case 'modpack': return 'text-purple-400';
+      default: return 'text-emerald-400';
+    }
+  }
+</script>
+
+<div
+  class="h-20 bg-white/80 dark:bg-[#09090b]/90 border-t dark:border-white/10 border-black/5 flex items-center px-8 justify-between z-20 backdrop-blur-md"
+>
+  <!-- Account Area -->
+  <div class="flex items-center gap-6">
+    <div
+      class="group flex items-center gap-4 cursor-pointer"
+      onclick={() => authState.openLoginModal()}
+      role="button"
+      tabindex="0"
+      onkeydown={(e) => e.key === "Enter" && authState.openLoginModal()}
+    >
+      <div
+        class="w-10 h-10 rounded-sm bg-zinc-100 dark:bg-zinc-800 border border-zinc-200 dark:border-zinc-700 flex items-center justify-center overflow-hidden transition-all group-hover:border-zinc-400 dark:group-hover:border-zinc-500"
+      >
+        {#if authState.currentAccount}
+          <img
+            src={`https://minotar.net/avatar/${authState.currentAccount.username}/48`}
+            alt={authState.currentAccount.username}
+            class="w-full h-full"
+          />
+        {:else}
+          <User size={20} class="text-zinc-400" />
+        {/if}
+      </div>
+      <div>
+        <div class="font-bold dark:text-white text-gray-900 text-sm group-hover:text-black dark:group-hover:text-zinc-200 transition-colors">
+          {authState.currentAccount ? authState.currentAccount.username : "Login Account"}
+        </div>
+        <div class="text-[10px] uppercase tracking-wider dark:text-zinc-500 text-gray-500 flex items-center gap-2">
+          {#if authState.currentAccount}
+            {#if authState.currentAccount.type === "Microsoft"}
+              {#if authState.currentAccount.expires_at && authState.currentAccount.expires_at * 1000 < Date.now()}
+                <span class="w-1.5 h-1.5 rounded-full bg-red-500"></span>
+                <span class="text-red-400">Expired</span>
+              {:else}
+                <span class="w-1.5 h-1.5 rounded-full bg-emerald-500"></span>
+                Online
+              {/if}
+            {:else}
+              <span class="w-1.5 h-1.5 rounded-full bg-amber-500"></span>
+              Offline
+            {/if}
+          {:else}
+            <span class="w-1.5 h-1.5 rounded-full bg-zinc-400"></span>
+            Guest
+          {/if}
+        </div>
+      </div>
+    </div>
+    
+    <div class="h-8 w-px dark:bg-white/10 bg-black/10"></div>
+    
+    <!-- Console Toggle -->
+    <button
+      class="text-xs font-mono dark:text-zinc-500 text-gray-500 dark:hover:text-white hover:text-black transition-colors flex items-center gap-2 px-2 py-1 rounded-sm hover:bg-black/5 dark:hover:bg-white/5"
+      onclick={() => uiState.toggleConsole()}
+    >
+      <Terminal size={14} />
+      {uiState.showConsole ? "HIDE LOGS" : "SHOW LOGS"}
+    </button>
+  </div>
+
+  <!-- Action Area -->
+  <div class="flex items-center gap-4">
+    <div class="flex flex-col items-end mr-2">
+      <!-- Custom Version Dropdown -->
+      <div class="relative" bind:this={dropdownRef}>
+        <button
+            type="button"
+            onclick={() => isVersionDropdownOpen = !isVersionDropdownOpen}
+            disabled={installedVersions.length === 0 && !isLoadingVersions}
+            class="flex items-center justify-between gap-2 w-56 px-4 py-2.5 text-left
+                   dark:bg-zinc-900 bg-zinc-50 border dark:border-zinc-700 border-zinc-300 rounded-md 
+                   text-sm font-mono dark:text-white text-gray-900
+                   dark:hover:border-zinc-600 hover:border-zinc-400 
+                   focus:border-indigo-500 focus:ring-1 focus:ring-indigo-500/30
+                   transition-colors cursor-pointer outline-none
+                   disabled:opacity-50 disabled:cursor-not-allowed"
+          >
+          <span class="truncate">
+            {#if isLoadingVersions}
+              Loading...
+            {:else if installedVersions.length === 0}
+              No versions installed
+            {:else}
+              {gameState.selectedVersion || "Select version"}
+            {/if}
+          </span>
+          <ChevronDown 
+            size={14} 
+            class="shrink-0 dark:text-zinc-500 text-zinc-400 transition-transform duration-200 {isVersionDropdownOpen ? 'rotate-180' : ''}" 
+          />
+        </button>
+
+        {#if isVersionDropdownOpen && installedVersions.length > 0}
+          <div 
+            class="absolute z-50 w-full mt-1 py-1 dark:bg-zinc-900 bg-white border dark:border-zinc-700 border-zinc-300 rounded-md shadow-xl
+                   max-h-72 overflow-y-auto animate-in fade-in slide-in-from-top-1 duration-150 bottom-full mb-1 right-0"
+          >
+            {#each versionOptions as version}
+              <button
+                type="button"
+                onclick={() => selectVersion(version.id)}
+                disabled={version.id === "loading" || version.id === "empty"}
+                class="w-full flex items-center justify-between px-3 py-2 text-sm font-mono text-left
+                       transition-colors outline-none
+                       {version.id === gameState.selectedVersion 
+                         ? 'bg-indigo-600 text-white' 
+                         : 'dark:text-zinc-300 text-gray-700 dark:hover:bg-zinc-800 hover:bg-zinc-100'}
+                       {version.id === 'loading' || version.id === 'empty' ? 'opacity-50 cursor-not-allowed' : 'cursor-pointer'}"
+              >
+                <span class="truncate flex items-center gap-2">
+                  {version.id}
+                  {#if version.type && version.type !== 'release' && version.type !== 'loading' && version.type !== 'empty'}
+                    <span class="text-[10px] uppercase {version.id === gameState.selectedVersion ? 'text-white/70' : getVersionTypeColor(version.type)}">
+                      {version.type}
+                    </span>
+                  {/if}
+                </span>
+                {#if version.id === gameState.selectedVersion}
+                  <Check size={14} class="shrink-0 ml-2" />
+                {/if}
+              </button>
+            {/each}
+          </div>
+        {/if}
+      </div>
+    </div>
+
+    <button
+      onclick={() => gameState.startGame()}
+      disabled={installedVersions.length === 0 || !gameState.selectedVersion}
+      class="bg-emerald-600 hover:bg-emerald-500 disabled:opacity-50 disabled:cursor-not-allowed text-white h-14 px-10 rounded-sm transition-all duration-200 hover:scale-[1.02] active:scale-[0.98] shadow-lg shadow-emerald-500/20 flex items-center gap-3 font-bold text-lg tracking-widest uppercase"
+    >
+      <Play size={24} fill="currentColor" />
+      <span>Launch</span>
+    </button>
+  </div>
+</div>
diff --git a/packages/ui/src/components/ConfigEditorModal.svelte b/packages/ui/src/components/ConfigEditorModal.svelte
new file mode 100644
index 0000000..dd866ee
--- /dev/null
+++ b/packages/ui/src/components/ConfigEditorModal.svelte
@@ -0,0 +1,369 @@
+<script lang="ts">
+  import { settingsState } from "../stores/settings.svelte";
+  import { Save, X, FileJson, AlertCircle, Undo, Redo, Settings } from "lucide-svelte";
+  import Prism from 'prismjs';
+  import 'prismjs/components/prism-json';
+  import 'prismjs/themes/prism-tomorrow.css';
+
+  let content = $state(settingsState.rawConfigContent);
+  let isSaving = $state(false);
+  let localError = $state("");
+  
+  let textareaRef: HTMLTextAreaElement | undefined = $state();
+  let preRef: HTMLPreElement | undefined = $state();
+  let lineNumbersRef: HTMLDivElement | undefined = $state();
+
+  // Textarea attributes that TypeScript doesn't recognize but are valid HTML
+  const textareaAttrs = {
+    autocorrect: "off",
+    autocapitalize: "off"
+  } as Record<string, string>;
+
+  // History State
+  let history = $state([settingsState.rawConfigContent]);
+  let historyIndex = $state(0);
+  let debounceTimer: ReturnType<typeof setTimeout> | undefined;
+
+  // Editor Settings
+  let showLineNumbers = $state(localStorage.getItem('editor_showLineNumbers') !== 'false');
+  let showStatusBar = $state(localStorage.getItem('editor_showStatusBar') !== 'false');
+  let showSettings = $state(false);
+
+  // Cursor Status
+  let cursorLine = $state(1);
+  let cursorCol = $state(1);
+  
+  let lines = $derived(content.split('\n'));
+
+  $effect(() => {
+     localStorage.setItem('editor_showLineNumbers', String(showLineNumbers));
+     localStorage.setItem('editor_showStatusBar', String(showStatusBar));
+  });
+
+  // Cleanup timer on destroy
+  $effect(() => {
+    return () => {
+        if (debounceTimer) clearTimeout(debounceTimer);
+    };
+  });
+
+  // Initial validation
+  $effect(() => {
+    validate(content);
+  });
+
+  function validate(text: string) {
+    try {
+        JSON.parse(text);
+        localError = "";
+    } catch (e: any) {
+        localError = e.message;
+    }
+  }
+
+  function pushHistory(newContent: string, immediate = false) {
+      if (debounceTimer) clearTimeout(debounceTimer);
+      
+      const commit = () => {
+          if (newContent === history[historyIndex]) return;
+          const next = history.slice(0, historyIndex + 1);
+          next.push(newContent);
+          history = next;
+          historyIndex = next.length - 1;
+      };
+
+      if (immediate) {
+          commit();
+      } else {
+          debounceTimer = setTimeout(commit, 500);
+      }
+  }
+
+  function handleUndo() {
+      if (historyIndex > 0) {
+          historyIndex--;
+          content = history[historyIndex];
+          validate(content);
+      }
+  }
+
+  function handleRedo() {
+      if (historyIndex < history.length - 1) {
+          historyIndex++;
+          content = history[historyIndex];
+          validate(content);
+      }
+  }
+
+  function updateCursor() {
+      if (!textareaRef) return;
+      const pos = textareaRef.selectionStart;
+      const text = textareaRef.value.substring(0, pos);
+      const lines = text.split('\n');
+      cursorLine = lines.length;
+      cursorCol = lines[lines.length - 1].length + 1;
+  }
+
+  function handleInput(e: Event) {
+      const target = e.target as HTMLTextAreaElement;
+      content = target.value;
+      validate(content);
+      pushHistory(content);
+      updateCursor();
+  }
+
+  function handleScroll() {
+      if (textareaRef) {
+          if (preRef) {
+              preRef.scrollTop = textareaRef.scrollTop;
+              preRef.scrollLeft = textareaRef.scrollLeft;
+          }
+          if (lineNumbersRef) {
+              lineNumbersRef.scrollTop = textareaRef.scrollTop;
+          }
+      }
+  }
+
+  let highlightedCode = $derived(
+      Prism.highlight(content, Prism.languages.json, 'json') + '\n'
+  );
+
+  async function handleSave(close = false) {
+    if (localError) return;
+    isSaving = true;
+    await settingsState.saveRawConfig(content, close);
+    isSaving = false;
+  }
+
+  function handleKeydown(e: KeyboardEvent) {
+    // Save
+    if (e.key === 's' && (e.ctrlKey || e.metaKey)) {
+      e.preventDefault();
+      handleSave(false); // Keep open on shortcut save
+    } 
+    // Undo
+    else if (e.key === 'z' && (e.ctrlKey || e.metaKey) && !e.shiftKey) {
+        e.preventDefault();
+        handleUndo();
+    }
+    // Redo (Ctrl+Shift+Z or Ctrl+Y)
+    else if (
+        (e.key === 'z' && (e.ctrlKey || e.metaKey) && e.shiftKey) ||
+        (e.key === 'y' && (e.ctrlKey || e.metaKey))
+    ) {
+        e.preventDefault();
+        handleRedo();
+    }
+    // Close
+    else if (e.key === 'Escape') {
+      settingsState.closeConfigEditor();
+    } 
+    // Tab
+    else if (e.key === 'Tab') {
+      e.preventDefault();
+      const target = e.target as HTMLTextAreaElement;
+      const start = target.selectionStart;
+      const end = target.selectionEnd;
+      
+      pushHistory(content, true);
+
+      const newContent = content.substring(0, start) + "  " + content.substring(end);
+      content = newContent;
+      
+      pushHistory(content, true);
+
+      setTimeout(() => {
+          target.selectionStart = target.selectionEnd = start + 2;
+          updateCursor();
+      }, 0);
+      validate(content);
+    }
+  }
+</script>
+
+<div class="fixed inset-0 z-[100] flex items-center justify-center backdrop-blur-sm bg-black/70 animate-in fade-in duration-200">
+  <div 
+    class="bg-[#1d1f21] rounded-xl border border-zinc-700 shadow-2xl w-[900px] max-w-[95vw] h-[85vh] flex flex-col overflow-hidden"
+    role="dialog"
+    aria-modal="true"
+  >
+    <!-- Header -->
+    <div class="flex items-center justify-between p-4 border-b border-zinc-700 bg-[#1d1f21] z-20 relative">
+      <div class="flex items-center gap-3">
+        <div class="p-2 bg-indigo-500/20 rounded-lg text-indigo-400">
+          <FileJson size={20} />
+        </div>
+        <div class="flex flex-col">
+            <h3 class="text-lg font-bold text-white leading-none">Configuration Editor</h3>
+            <span class="text-[10px] text-zinc-500 font-mono mt-1 break-all">{settingsState.configFilePath}</span>
+        </div>
+      </div>
+      <div class="flex items-center gap-2">
+          <!-- Undo/Redo Buttons -->
+          <div class="flex items-center bg-zinc-800 rounded-lg p-0.5 mr-2 border border-zinc-700">
+              <button 
+                onclick={handleUndo} 
+                disabled={historyIndex === 0}
+                class="p-1.5 text-zinc-400 hover:text-white hover:bg-zinc-700 rounded disabled:opacity-30 disabled:hover:bg-transparent transition-colors"
+                title="Undo (Ctrl+Z)"
+              >
+                  <Undo size={16} />
+              </button>
+              <button 
+                onclick={handleRedo} 
+                disabled={historyIndex === history.length - 1}
+                class="p-1.5 text-zinc-400 hover:text-white hover:bg-zinc-700 rounded disabled:opacity-30 disabled:hover:bg-transparent transition-colors"
+                title="Redo (Ctrl+Y)"
+              >
+                  <Redo size={16} />
+              </button>
+          </div>
+
+          <!-- Settings Toggle -->
+          <div class="relative">
+              <button 
+                onclick={() => showSettings = !showSettings}
+                class="text-zinc-400 hover:text-white transition-colors p-2 hover:bg-white/5 rounded-lg {showSettings ? 'bg-white/10 text-white' : ''}"
+                title="Editor Settings"
+              >
+                <Settings size={20} />
+              </button>
+              
+              {#if showSettings}
+                <div class="absolute right-0 top-full mt-2 w-48 bg-zinc-800 border border-zinc-700 rounded-lg shadow-xl p-2 z-50 flex flex-col gap-1">
+                    <label class="flex items-center gap-2 p-2 hover:bg-white/5 rounded cursor-pointer">
+                        <input type="checkbox" bind:checked={showLineNumbers} class="rounded border-zinc-600 bg-zinc-900 text-indigo-500 focus:ring-indigo-500/50" />
+                        <span class="text-sm text-zinc-300">Line Numbers</span>
+                    </label>
+                    <label class="flex items-center gap-2 p-2 hover:bg-white/5 rounded cursor-pointer">
+                        <input type="checkbox" bind:checked={showStatusBar} class="rounded border-zinc-600 bg-zinc-900 text-indigo-500 focus:ring-indigo-500/50" />
+                        <span class="text-sm text-zinc-300">Cursor Status</span>
+                    </label>
+                </div>
+              {/if}
+          </div>
+
+          <button
+            onclick={() => settingsState.closeConfigEditor()}
+            class="text-zinc-400 hover:text-white transition-colors p-2 hover:bg-white/5 rounded-lg"
+            title="Close (Esc)"
+          >
+            <X size={20} />
+          </button>
+      </div>
+    </div>
+
+    <!-- Error Banner -->
+    {#if localError || settingsState.configEditorError}
+        <div class="bg-red-500/10 border-b border-red-500/20 p-3 flex items-start gap-3 animate-in slide-in-from-top-2 z-10 relative">
+            <AlertCircle size={16} class="text-red-400 mt-0.5 shrink-0" />
+            <p class="text-xs text-red-300 font-mono whitespace-pre-wrap">{localError || settingsState.configEditorError}</p>
+        </div>
+    {/if}
+
+    <!-- Editor Body (Flex row for line numbers + code) -->
+    <div class="flex-1 flex overflow-hidden relative bg-[#1d1f21]">
+        <!-- Line Numbers -->
+        {#if showLineNumbers}
+            <div 
+                bind:this={lineNumbersRef}
+                class="pt-4 pb-4 pr-3 pl-2 text-right text-zinc-600 bg-[#1d1f21] border-r border-zinc-700/50 font-mono select-none overflow-hidden min-w-[3rem]"
+                aria-hidden="true"
+            >
+                {#each lines as _, i}
+                    <div class="leading-[20px] text-[13px]">{i + 1}</div>
+                {/each}
+            </div>
+        {/if}
+
+        <!-- Code Area -->
+        <div class="flex-1 relative overflow-hidden group">
+            <!-- Highlighted Code (Background) -->
+            <pre 
+                bind:this={preRef}
+                aria-hidden="true"
+                class="absolute inset-0 w-full h-full p-4 m-0 bg-transparent pointer-events-none overflow-hidden whitespace-pre font-mono text-sm leading-relaxed"
+            ><code class="language-json">{@html highlightedCode}</code></pre>
+
+            <!-- Textarea (Foreground) -->
+            <textarea
+                bind:this={textareaRef}
+                bind:value={content}
+                oninput={handleInput}
+                onkeydown={handleKeydown}
+                onscroll={handleScroll}
+                onmouseup={updateCursor}
+                onkeyup={updateCursor}
+                onclick={() => showSettings = false}
+                class="absolute inset-0 w-full h-full p-4 bg-transparent text-transparent caret-white font-mono text-sm leading-relaxed resize-none focus:outline-none whitespace-pre overflow-auto z-10 selection:bg-indigo-500/30"
+                spellcheck="false"
+                {...textareaAttrs}
+            ></textarea>
+        </div>
+    </div>
+
+    <!-- Footer -->
+    <div class="p-3 border-t border-zinc-700 bg-[#1d1f21] flex justify-between items-center z-20 relative">
+      <div class="text-xs text-zinc-500 flex gap-4 items-center">
+        {#if showStatusBar}
+            <div class="flex gap-3 font-mono border-r border-zinc-700 pr-4 mr-1">
+                <span>Ln {cursorLine}</span>
+                <span>Col {cursorCol}</span>
+            </div>
+        {/if}
+        <span class="hidden sm:inline"><span class="bg-white/10 px-1.5 py-0.5 rounded text-zinc-300">Ctrl+S</span> save</span>
+      </div>
+      <div class="flex gap-3">
+        <button
+          onclick={() => settingsState.closeConfigEditor()}
+          class="px-4 py-2 bg-zinc-800 hover:bg-zinc-700 text-white rounded-lg text-sm font-medium transition-colors"
+        >
+          Cancel
+        </button>
+        <button
+          onclick={() => handleSave(false)}
+          disabled={isSaving || !!localError}
+          class="px-4 py-2 bg-indigo-600 hover:bg-indigo-500 disabled:opacity-50 disabled:cursor-not-allowed text-white rounded-lg text-sm font-medium transition-colors flex items-center gap-2"
+          title={localError ? "Fix errors before saving" : "Save changes"}
+        >
+          {#if isSaving}
+            <div class="w-4 h-4 border-2 border-white/30 border-t-white rounded-full animate-spin"></div>
+            Saving...
+          {:else}
+            <Save size={16} />
+            Save
+          {/if}
+        </button>
+      </div>
+    </div>
+  </div>
+</div>
+
+<style>
+  /* Ensure exact font match */
+  pre, textarea {
+      font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
+      font-size: 13px !important;
+      line-height: 20px !important;
+      letter-spacing: 0px !important;
+      tab-size: 2;
+  }
+  
+  /* Hide scrollbar for pre but keep it functional for textarea */
+  pre::-webkit-scrollbar {
+    display: none;
+  }
+
+  /* Override Prism background and font weights for alignment */
+  :global(pre[class*="language-"]), :global(code[class*="language-"]) {
+      background: transparent !important;
+      text-shadow: none !important;
+      box-shadow: none !important;
+  }
+
+  /* CRITICAL: Force normal weight to match textarea */
+  :global(.token) {
+      font-weight: normal !important;
+      font-style: normal !important;
+  }
+</style>
diff --git a/packages/ui/src/components/CustomSelect.svelte b/packages/ui/src/components/CustomSelect.svelte
new file mode 100644
index 0000000..0767471
--- /dev/null
+++ b/packages/ui/src/components/CustomSelect.svelte
@@ -0,0 +1,173 @@
+<script lang="ts">
+  import { ChevronDown, Check } from 'lucide-svelte';
+
+  interface Option {
+    value: string;
+    label: string;
+    disabled?: boolean;
+  }
+
+  interface Props {
+    options: Option[];
+    value: string;
+    placeholder?: string;
+    disabled?: boolean;
+    class?: string;
+    allowCustom?: boolean; // New prop to allow custom input
+    onchange?: (value: string) => void;
+  }
+
+  let { 
+    options, 
+    value = $bindable(), 
+    placeholder = "Select...", 
+    disabled = false,
+    class: className = "",
+    allowCustom = false,
+    onchange
+  }: Props = $props();
+
+  let isOpen = $state(false);
+  let containerRef: HTMLDivElement;
+  let customInput = $state(""); // State for custom input
+
+  let selectedOption = $derived(options.find(o => o.value === value));
+  // Display label: if option exists use its label, otherwise if custom is allowed use raw value, else placeholder
+  let displayLabel = $derived(selectedOption ? selectedOption.label : (allowCustom && value ? value : placeholder));
+
+  function toggle() {
+    if (!disabled) {
+      isOpen = !isOpen;
+      // When opening, if current value is custom (not in options), pre-fill input
+      if (isOpen && allowCustom && !selectedOption) {
+          customInput = value;
+      }
+    }
+  }
+
+  function select(option: Option) {
+    if (option.disabled) return;
+    value = option.value;
+    isOpen = false;
+    onchange?.(option.value);
+  }
+
+  function handleCustomSubmit() {
+      if (!customInput.trim()) return;
+      value = customInput.trim();
+      isOpen = false;
+      onchange?.(value);
+  }
+
+  function handleKeydown(e: KeyboardEvent) {
+    if (disabled) return;
+    
+    if (e.key === 'Enter' || e.key === ' ') {
+      e.preventDefault();
+      toggle();
+    } else if (e.key === 'Escape') {
+      isOpen = false;
+    } else if (e.key === 'ArrowDown' && isOpen) {
+      e.preventDefault();
+      const currentIndex = options.findIndex(o => o.value === value);
+      const nextIndex = Math.min(currentIndex + 1, options.length - 1);
+      if (!options[nextIndex].disabled) {
+        value = options[nextIndex].value;
+      }
+    } else if (e.key === 'ArrowUp' && isOpen) {
+      e.preventDefault();
+      const currentIndex = options.findIndex(o => o.value === value);
+      const prevIndex = Math.max(currentIndex - 1, 0);
+      if (!options[prevIndex].disabled) {
+        value = options[prevIndex].value;
+      }
+    }
+  }
+
+  function handleClickOutside(e: MouseEvent) {
+    if (containerRef && !containerRef.contains(e.target as Node)) {
+      isOpen = false;
+    }
+  }
+
+  $effect(() => {
+    if (isOpen) {
+      document.addEventListener('click', handleClickOutside);
+      return () => document.removeEventListener('click', handleClickOutside);
+    }
+  });
+</script>
+
+<div 
+  bind:this={containerRef}
+  class="relative {className}"
+>
+  <!-- Trigger Button -->
+  <button
+    type="button"
+    onclick={toggle}
+    onkeydown={handleKeydown}
+    {disabled}
+    class="w-full flex items-center justify-between gap-2 px-3 py-2 pr-8 text-left
+           bg-zinc-900 border border-zinc-700 rounded-md text-sm text-zinc-200
+           hover:border-zinc-600 focus:border-indigo-500 focus:ring-1 focus:ring-indigo-500/30
+           transition-colors cursor-pointer outline-none
+           disabled:opacity-50 disabled:cursor-not-allowed disabled:hover:border-zinc-700"
+  >
+    <span class="truncate {(!selectedOption && !value) ? 'text-zinc-500' : ''}">
+      {displayLabel}
+    </span>
+    <ChevronDown 
+      size={14} 
+      class="absolute right-3 top-1/2 -translate-y-1/2 text-zinc-500 transition-transform duration-200 {isOpen ? 'rotate-180' : ''}" 
+    />
+  </button>
+
+  <!-- Dropdown Menu -->
+  {#if isOpen}
+    <div 
+      class="absolute z-50 w-full mt-1 py-1 bg-zinc-900 border border-zinc-700 rounded-md shadow-xl
+             max-h-60 overflow-y-auto animate-in fade-in slide-in-from-top-1 duration-150 flex flex-col"
+    >
+      {#if allowCustom}
+        <div class="px-2 py-2 border-b border-zinc-700/50 mb-1">
+            <div class="flex gap-2">
+                <input 
+                    type="text" 
+                    bind:value={customInput}
+                    placeholder="Custom value..."
+                    class="flex-1 bg-black/30 border border-zinc-700 rounded px-2 py-1 text-xs text-white focus:border-indigo-500 outline-none"
+                    onkeydown={(e) => e.key === 'Enter' && handleCustomSubmit()}
+                    onclick={(e) => e.stopPropagation()} 
+                />
+                <button 
+                    onclick={(e) => { e.stopPropagation(); handleCustomSubmit(); }}
+                    class="px-2 py-1 bg-indigo-600 hover:bg-indigo-500 text-white rounded text-xs transition-colors"
+                >
+                    Set
+                </button>
+            </div>
+        </div>
+      {/if}
+
+      {#each options as option}
+        <button
+          type="button"
+          onclick={() => select(option)}
+          disabled={option.disabled}
+          class="w-full flex items-center justify-between px-3 py-2 text-sm text-left
+                 transition-colors outline-none
+                 {option.value === value 
+                   ? 'bg-indigo-600 text-white' 
+                   : 'text-zinc-300 hover:bg-zinc-800'}
+                 {option.disabled ? 'opacity-40 cursor-not-allowed' : 'cursor-pointer'}"
+        >
+          <span class="truncate">{option.label}</span>
+          {#if option.value === value}
+            <Check size={14} class="shrink-0 ml-2" />
+          {/if}
+        </button>
+      {/each}
+    </div>
+  {/if}
+</div>
diff --git a/packages/ui/src/components/HomeView.svelte b/packages/ui/src/components/HomeView.svelte
new file mode 100644
index 0000000..573d9da
--- /dev/null
+++ b/packages/ui/src/components/HomeView.svelte
@@ -0,0 +1,271 @@
+<script lang="ts">
+  import { onMount } from 'svelte';
+  import { gameState } from '../stores/game.svelte';
+  import { releasesState } from '../stores/releases.svelte';
+  import { Calendar, ExternalLink } from 'lucide-svelte';
+  import { getSaturnEffect } from './ParticleBackground.svelte';
+
+  type Props = {
+    mouseX: number;
+    mouseY: number;
+  };
+  let { mouseX = 0, mouseY = 0 }: Props = $props();
+
+  // Saturn effect mouse interaction handlers
+  function handleSaturnMouseDown(e: MouseEvent) {
+    const effect = getSaturnEffect();
+    if (effect) {
+      effect.handleMouseDown(e.clientX);
+    }
+  }
+
+  function handleSaturnMouseMove(e: MouseEvent) {
+    const effect = getSaturnEffect();
+    if (effect) {
+      effect.handleMouseMove(e.clientX);
+    }
+  }
+
+  function handleSaturnMouseUp() {
+    const effect = getSaturnEffect();
+    if (effect) {
+      effect.handleMouseUp();
+    }
+  }
+
+  function handleSaturnMouseLeave() {
+    const effect = getSaturnEffect();
+    if (effect) {
+      effect.handleMouseUp();
+    }
+  }
+
+  function handleSaturnTouchStart(e: TouchEvent) {
+    if (e.touches.length === 1) {
+      const effect = getSaturnEffect();
+      if (effect) {
+        effect.handleTouchStart(e.touches[0].clientX);
+      }
+    }
+  }
+
+  function handleSaturnTouchMove(e: TouchEvent) {
+    if (e.touches.length === 1) {
+      const effect = getSaturnEffect();
+      if (effect) {
+        effect.handleTouchMove(e.touches[0].clientX);
+      }
+    }
+  }
+
+  function handleSaturnTouchEnd() {
+    const effect = getSaturnEffect();
+    if (effect) {
+      effect.handleTouchEnd();
+    }
+  }
+
+  onMount(() => {
+    releasesState.loadReleases();
+  });
+
+  function formatDate(dateString: string) {
+    return new Date(dateString).toLocaleDateString(undefined, {
+      year: 'numeric',
+      month: 'long',
+      day: 'numeric'
+    });
+  }
+  
+  function escapeHtml(unsafe: string) {
+      return unsafe
+          .replace(/&/g, "&amp;")
+          .replace(/</g, "&lt;")
+          .replace(/>/g, "&gt;")
+          .replace(/"/g, "&quot;")
+          .replace(/'/g, "&#039;");
+  }
+
+  // Enhanced markdown parser with Emoji and GitHub specific features
+  function formatBody(body: string) {
+      if (!body) return '';
+      
+      // Escape HTML first to prevent XSS
+      let processed = escapeHtml(body);
+      
+      // Emoji map (common GitHub emojis)
+      const emojiMap: Record<string, string> = {
+          ':tada:': '🎉', ':sparkles:': '✨', ':bug:': '🐛', ':memo:': '📝',
+          ':rocket:': '🚀', ':white_check_mark:': '✅', ':construction:': '🚧',
+          ':recycle:': '♻️', ':wrench:': '🔧', ':package:': '📦',
+          ':arrow_up:': '⬆️', ':arrow_down:': '⬇️', ':warning:': '⚠️',
+          ':fire:': '🔥', ':heart:': '❤️', ':star:': '⭐', ':zap:': '⚡',
+          ':art:': '🎨', ':lipstick:': '💄', ':globe_with_meridians:': '🌐'
+      };
+
+      // Replace emojis
+      processed = processed.replace(/:[a-z0-9_]+:/g, (match) => emojiMap[match] || match);
+
+      // GitHub commit hash linking (simple version for 7-40 hex chars inside backticks)
+      processed = processed.replace(/`([0-9a-f]{7,40})`/g, (match, hash) => {
+          return `<a href="https://github.com/HydroRoll-Team/DropOut/commit/${hash}" target="_blank" class="text-emerald-500 hover:underline font-mono bg-emerald-500/10 px-1 rounded text-[10px] py-0.5 transition-colors border border-emerald-500/20 hover:border-emerald-500/50">${hash.substring(0, 7)}</a>`;
+      });
+      
+      // Auto-link users (@user)
+      processed = processed.replace(/@([a-zA-Z0-9-]+)/g, '<a href="https://github.com/$1" target="_blank" class="text-zinc-300 hover:text-white hover:underline font-medium">@$1</a>');
+
+      return processed.split('\n').map(line => {
+          line = line.trim();
+          
+          // Formatting helper
+          const formatLine = (text: string) => text
+              .replace(/\*\*(.*?)\*\*/g, '<strong class="text-zinc-200">$1</strong>')
+              .replace(/(?<!\*)\*([^*]+)\*(?!\*)/g, '<em class="text-zinc-400 italic">$1</em>')
+              .replace(/`([^`]+)`/g, '<code class="bg-zinc-800 px-1 py-0.5 rounded text-xs text-zinc-300 font-mono border border-white/5 break-all whitespace-normal">$1</code>')
+              .replace(/\[(.*?)\]\((.*?)\)/g, '<a href="$2" target="_blank" class="text-indigo-400 hover:text-indigo-300 hover:underline decoration-indigo-400/30 break-all">$1</a>');
+
+          // Lists
+          if (line.startsWith('- ') || line.startsWith('* ')) {
+              return `<li class="ml-4 list-disc marker:text-zinc-600 mb-1 pl-1 text-zinc-400">${formatLine(line.substring(2))}</li>`;
+          }
+          
+          // Headers
+          if (line.startsWith('##')) {
+               return `<h3 class="text-sm font-bold mt-6 mb-3 text-zinc-100 flex items-center gap-2 border-b border-white/5 pb-2 uppercase tracking-wide">${line.replace(/^#+\s+/, '')}</h3>`;
+          }
+          if (line.startsWith('#')) {
+               return `<h3 class="text-base font-bold mt-6 mb-3 text-white">${line.replace(/^#+\s+/, '')}</h3>`;
+          }
+          
+          // Blockquotes
+          if (line.startsWith('> ')) {
+              return `<blockquote class="border-l-2 border-zinc-700 pl-4 py-1 my-2 text-zinc-500 italic bg-white/5 rounded-r-sm">${formatLine(line.substring(2))}</blockquote>`;
+          }
+          
+          // Empty lines
+          if (line === '') return '<div class="h-2"></div>';
+          
+          // Paragraphs
+          return `<p class="mb-1.5 leading-relaxed">${formatLine(line)}</p>`;
+      }).join('');
+  }
+</script>
+
+<div class="absolute inset-0 z-0 overflow-hidden pointer-events-none">
+  <!-- Fixed Background -->
+  <div class="absolute inset-0 bg-gradient-to-t from-[#09090b] via-[#09090b]/60 to-transparent"></div>
+</div>
+
+<!-- Scrollable Container -->
+<div class="relative z-10 h-full {releasesState.isLoading ? 'overflow-hidden' : 'overflow-y-auto custom-scrollbar scroll-smooth'}">
+  
+  <!-- Hero Section (Full Height) - Interactive area for Saturn rotation -->
+  <!-- svelte-ignore a11y_no_static_element_interactions -->
+  <div 
+    class="min-h-full flex flex-col justify-end p-12 pb-32 cursor-grab active:cursor-grabbing select-none"
+    onmousedown={handleSaturnMouseDown}
+    onmousemove={handleSaturnMouseMove}
+    onmouseup={handleSaturnMouseUp}
+    onmouseleave={handleSaturnMouseLeave}
+    ontouchstart={handleSaturnTouchStart}
+    ontouchmove={handleSaturnTouchMove}
+    ontouchend={handleSaturnTouchEnd}
+  >
+     <!-- 3D Floating Hero Text -->
+      <div 
+        class="transition-transform duration-200 ease-out origin-bottom-left"
+        style:transform={`perspective(1000px) rotateX(${mouseY * -1}deg) rotateY(${mouseX * 1}deg)`}
+      >
+        <div class="flex items-center gap-3 mb-6">
+           <div class="h-px w-12 bg-white/50"></div>
+           <span class="text-xs font-mono font-bold tracking-[0.2em] text-white/50 uppercase">Launcher Active</span>
+        </div>
+
+        <h1
+          class="text-8xl font-black tracking-tighter text-white mb-6 leading-none"
+        >
+          MINECRAFT
+        </h1>
+        
+        <div class="flex items-center gap-4">
+          <div 
+            class="bg-white/10 backdrop-blur-md border border-white/10 px-3 py-1 rounded-sm text-xs font-bold uppercase tracking-widest text-white shadow-sm"
+          >
+            Java Edition
+          </div>
+          <div class="h-4 w-px bg-white/20"></div>
+          <div class="text-xl font-light text-zinc-400">
+            Latest Release <span class="text-white font-medium">{gameState.latestRelease?.id || '...'}</span>
+          </div>
+        </div>
+      </div>
+
+      <!-- Action Area -->
+      <div class="mt-8 flex gap-4">
+        <div class="text-zinc-500 text-sm font-mono">
+          > Ready to launch session.
+        </div>
+      </div>
+
+      <!-- Scroll Hint -->
+      {#if !releasesState.isLoading && releasesState.releases.length > 0}
+      <div class="absolute bottom-10 left-12 animate-bounce text-zinc-600 flex flex-col items-center gap-2 w-fit opacity-50 hover:opacity-100 transition-opacity">
+          <span class="text-[10px] font-mono uppercase tracking-widest">Scroll for Updates</span>
+          <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M7 13l5 5 5-5M7 6l5 5 5-5"/></svg>
+      </div>
+      {/if}
+  </div>
+
+  <!-- Changelog / Updates Section -->
+  <div class="bg-[#09090b] relative z-20 px-12 pb-24 pt-12 border-t border-white/5 min-h-[50vh]">
+      <div class="max-w-4xl">
+          <h2 class="text-2xl font-bold text-white mb-10 flex items-center gap-3">
+              <span class="w-1.5 h-8 bg-emerald-500 rounded-sm"></span>
+              LATEST UPDATES
+          </h2>
+
+          {#if releasesState.isLoading}
+            <div class="flex flex-col gap-8">
+                {#each Array(3) as _}
+                    <div class="h-48 bg-white/5 rounded-sm animate-pulse border border-white/5"></div>
+                {/each}
+            </div>
+          {:else if releasesState.error}
+             <div class="p-6 border border-red-500/20 bg-red-500/10 text-red-400 rounded-sm">
+                 Failed to load updates: {releasesState.error}
+             </div>
+          {:else if releasesState.releases.length === 0}
+             <div class="text-zinc-500 italic">No releases found.</div>
+          {:else}
+             <div class="space-y-12">
+                 {#each releasesState.releases as release}
+                    <div class="group relative pl-8 border-l border-white/10 pb-4 last:pb-0 last:border-l-0">
+                        <!-- Timeline Dot -->
+                        <div class="absolute -left-[5px] top-1.5 w-2.5 h-2.5 rounded-full bg-zinc-800 border border-zinc-600 group-hover:bg-emerald-500 group-hover:border-emerald-400 transition-colors"></div>
+                        
+                        <div class="flex items-baseline gap-4 mb-3">
+                             <h3 class="text-xl font-bold text-white group-hover:text-emerald-400 transition-colors">
+                                {release.name || release.tag_name}
+                             </h3>
+                             <div class="text-xs font-mono text-zinc-500 flex items-center gap-2">
+                                <Calendar size={12} />
+                                {formatDate(release.published_at)}
+                             </div>
+                        </div>
+
+                        <div class="bg-zinc-900/50 border border-white/5 hover:border-white/10 rounded-sm p-6 text-zinc-400 text-sm leading-relaxed transition-colors overflow-hidden">
+                            <div class="prose prose-invert prose-sm max-w-none prose-p:text-zinc-400 prose-headings:text-zinc-200 prose-ul:my-2 prose-li:my-0 break-words whitespace-normal">
+                                {@html formatBody(release.body)}
+                            </div>
+                        </div>
+                        
+                        <a href={release.html_url} target="_blank" class="inline-flex items-center gap-2 mt-3 text-[10px] font-bold uppercase tracking-wider text-zinc-600 hover:text-white transition-colors">
+                            View full changelog on GitHub <ExternalLink size={10} />
+                        </a>
+                    </div>
+                 {/each}
+             </div>
+          {/if}
+      </div>
+  </div>
+</div>
diff --git a/packages/ui/src/components/InstanceCreationModal.svelte b/packages/ui/src/components/InstanceCreationModal.svelte
new file mode 100644
index 0000000..c54cb98
--- /dev/null
+++ b/packages/ui/src/components/InstanceCreationModal.svelte
@@ -0,0 +1,485 @@
+<script lang="ts">
+  import { invoke } from "@tauri-apps/api/core";
+  import { X, ChevronLeft, ChevronRight, Loader2, Search } from "lucide-svelte";
+  import { instancesState } from "../stores/instances.svelte";
+  import { gameState } from "../stores/game.svelte";
+  import type { Version, Instance, FabricLoaderEntry, ForgeVersion } from "../types";
+
+  interface Props {
+    isOpen: boolean;
+    onClose: () => void;
+  }
+
+  let { isOpen, onClose }: Props = $props();
+
+  // Wizard steps: 1 = Name, 2 = Version, 3 = Mod Loader
+  let currentStep = $state(1);
+  let instanceName = $state("");
+  let selectedVersion = $state<Version | null>(null);
+  let modLoaderType = $state<"vanilla" | "fabric" | "forge">("vanilla");
+  let selectedFabricLoader = $state("");
+  let selectedForgeLoader = $state("");
+  let creating = $state(false);
+  let errorMessage = $state("");
+
+  // Mod loader lists
+  let fabricLoaders = $state<FabricLoaderEntry[]>([]);
+  let forgeVersions = $state<ForgeVersion[]>([]);
+  let loadingLoaders = $state(false);
+
+  // Version list filtering
+  let versionSearch = $state("");
+  let versionFilter = $state<"all" | "release" | "snapshot">("release");
+
+  // Filtered versions
+  let filteredVersions = $derived(() => {
+    let versions = gameState.versions || [];
+    
+    // Filter by type
+    if (versionFilter !== "all") {
+      versions = versions.filter((v) => v.type === versionFilter);
+    }
+
+    // Search filter
+    if (versionSearch) {
+      versions = versions.filter((v) =>
+        v.id.toLowerCase().includes(versionSearch.toLowerCase())
+      );
+    }
+
+    return versions;
+  });
+
+  // Fetch mod loaders when entering step 3
+  async function loadModLoaders() {
+    if (!selectedVersion) return;
+    
+    loadingLoaders = true;
+    try {
+      if (modLoaderType === "fabric") {
+        const loaders = await invoke<FabricLoaderEntry[]>("get_fabric_loaders_for_version", {
+          gameVersion: selectedVersion.id,
+        });
+        fabricLoaders = loaders;
+        if (loaders.length > 0) {
+          selectedFabricLoader = loaders[0].loader.version;
+        }
+      } else if (modLoaderType === "forge") {
+        const versions = await invoke<ForgeVersion[]>("get_forge_versions_for_game", {
+          gameVersion: selectedVersion.id,
+        });
+        forgeVersions = versions;
+        if (versions.length > 0) {
+          selectedForgeLoader = versions[0].version;
+        }
+      }
+    } catch (err) {
+      errorMessage = `Failed to load ${modLoaderType} versions: ${err}`;
+    } finally {
+      loadingLoaders = false;
+    }
+  }
+
+  // Watch for mod loader type changes and load loaders
+  $effect(() => {
+    if (currentStep === 3 && modLoaderType !== "vanilla") {
+      loadModLoaders();
+    }
+  });
+
+  // Reset modal state
+  function resetModal() {
+    currentStep = 1;
+    instanceName = "";
+    selectedVersion = null;
+    modLoaderType = "vanilla";
+    selectedFabricLoader = "";
+    selectedForgeLoader = "";
+    creating = false;
+    errorMessage = "";
+    versionSearch = "";
+    versionFilter = "release";
+  }
+
+  function handleClose() {
+    if (!creating) {
+      resetModal();
+      onClose();
+    }
+  }
+
+  function goToStep(step: number) {
+    errorMessage = "";
+    currentStep = step;
+  }
+
+  function validateStep1() {
+    if (!instanceName.trim()) {
+      errorMessage = "Please enter an instance name";
+      return false;
+    }
+    return true;
+  }
+
+  function validateStep2() {
+    if (!selectedVersion) {
+      errorMessage = "Please select a Minecraft version";
+      return false;
+    }
+    return true;
+  }
+
+  async function handleNext() {
+    errorMessage = "";
+    
+    if (currentStep === 1) {
+      if (validateStep1()) {
+        goToStep(2);
+      }
+    } else if (currentStep === 2) {
+      if (validateStep2()) {
+        goToStep(3);
+      }
+    }
+  }
+
+  async function handleCreate() {
+    if (!validateStep1() || !validateStep2()) return;
+
+    creating = true;
+    errorMessage = "";
+
+    try {
+      // Step 1: Create instance
+      const instance: Instance = await invoke("create_instance", {
+        name: instanceName.trim(),
+      });
+
+      // Step 2: Install vanilla version
+      await invoke("install_version", {
+        instanceId: instance.id,
+        versionId: selectedVersion!.id,
+      });
+
+      // Step 3: Install mod loader if selected
+      if (modLoaderType === "fabric" && selectedFabricLoader) {
+        await invoke("install_fabric", {
+          instanceId: instance.id,
+          gameVersion: selectedVersion!.id,
+          loaderVersion: selectedFabricLoader,
+        });
+      } else if (modLoaderType === "forge" && selectedForgeLoader) {
+        await invoke("install_forge", {
+          instanceId: instance.id,
+          gameVersion: selectedVersion!.id,
+          forgeVersion: selectedForgeLoader,
+        });
+      } else {
+        // Update instance with vanilla version_id
+        await invoke("update_instance", {
+          instance: { ...instance, version_id: selectedVersion!.id },
+        });
+      }
+
+      // Reload instances
+      await instancesState.loadInstances();
+
+      // Success! Close modal
+      resetModal();
+      onClose();
+    } catch (error) {
+      errorMessage = String(error);
+      creating = false;
+    }
+  }
+</script>
+
+{#if isOpen}
+  <div
+    class="fixed inset-0 z-[100] bg-black/80 backdrop-blur-sm flex items-center justify-center p-4"
+    role="dialog"
+    aria-modal="true"
+  >
+    <div
+      class="bg-zinc-900 border border-zinc-700 rounded-xl shadow-2xl w-full max-w-3xl max-h-[90vh] overflow-hidden flex flex-col"
+    >
+      <!-- Header -->
+      <div
+        class="flex items-center justify-between p-6 border-b border-zinc-700"
+      >
+        <div>
+          <h2 class="text-xl font-bold text-white">Create New Instance</h2>
+          <p class="text-sm text-zinc-400 mt-1">
+            Step {currentStep} of 3
+          </p>
+        </div>
+        <button
+          onclick={handleClose}
+          disabled={creating}
+          class="p-2 rounded-lg hover:bg-zinc-800 text-zinc-400 hover:text-white transition-colors disabled:opacity-50"
+        >
+          <X size={20} />
+        </button>
+      </div>
+
+      <!-- Progress indicator -->
+      <div class="flex gap-2 px-6 pt-4">
+        <div
+          class="flex-1 h-1 rounded-full transition-colors {currentStep >= 1
+            ? 'bg-indigo-500'
+            : 'bg-zinc-700'}"
+        ></div>
+        <div
+          class="flex-1 h-1 rounded-full transition-colors {currentStep >= 2
+            ? 'bg-indigo-500'
+            : 'bg-zinc-700'}"
+        ></div>
+        <div
+          class="flex-1 h-1 rounded-full transition-colors {currentStep >= 3
+            ? 'bg-indigo-500'
+            : 'bg-zinc-700'}"
+        ></div>
+      </div>
+
+      <!-- Content -->
+      <div class="flex-1 overflow-y-auto p-6">
+        {#if currentStep === 1}
+          <!-- Step 1: Name -->
+          <div class="space-y-4">
+            <div>
+              <label
+                for="instance-name"
+                class="block text-sm font-medium text-white/90 mb-2"
+                >Instance Name</label
+              >
+              <input
+                id="instance-name"
+                type="text"
+                bind:value={instanceName}
+                placeholder="My Minecraft Instance"
+                class="w-full px-4 py-2 bg-zinc-800 border border-zinc-700 rounded-lg text-white placeholder-zinc-500 focus:outline-none focus:ring-2 focus:ring-indigo-500"
+                disabled={creating}
+              />
+            </div>
+            <p class="text-xs text-zinc-400">
+              Give your instance a memorable name
+            </p>
+          </div>
+        {:else if currentStep === 2}
+          <!-- Step 2: Version Selection -->
+          <div class="space-y-4">
+            <div class="flex gap-4">
+              <div class="flex-1 relative">
+                <Search
+                  size={16}
+                  class="absolute left-3 top-1/2 -translate-y-1/2 text-zinc-500"
+                />
+                <input
+                  type="text"
+                  bind:value={versionSearch}
+                  placeholder="Search versions..."
+                  class="w-full pl-10 pr-4 py-2 bg-zinc-800 border border-zinc-700 rounded-lg text-white placeholder-zinc-500 focus:outline-none focus:ring-2 focus:ring-indigo-500"
+                />
+              </div>
+              <div class="flex gap-2">
+                {#each [
+                  { value: "all", label: "All" },
+                  { value: "release", label: "Release" },
+                  { value: "snapshot", label: "Snapshot" },
+                ] as filter}
+                  <button
+                    onclick={() => {
+                      versionFilter = filter.value as "all" | "release" | "snapshot";
+                    }}
+                    class="px-4 py-2 rounded-lg text-sm font-medium transition-colors {versionFilter ===
+                    filter.value
+                      ? 'bg-indigo-600 text-white'
+                      : 'bg-zinc-800 text-zinc-400 hover:text-white'}"
+                  >
+                    {filter.label}
+                  </button>
+                {/each}
+              </div>
+            </div>
+
+            <div class="max-h-96 overflow-y-auto space-y-2">
+              {#each filteredVersions() as version}
+                <button
+                  onclick={() => (selectedVersion = version)}
+                  class="w-full p-3 rounded-lg border transition-colors text-left {selectedVersion?.id ===
+                  version.id
+                    ? 'bg-indigo-600/20 border-indigo-500 text-white'
+                    : 'bg-zinc-800 border-zinc-700 text-zinc-300 hover:border-zinc-600'}"
+                >
+                  <div class="flex items-center justify-between">
+                    <span class="font-medium">{version.id}</span>
+                    <span
+                      class="text-xs px-2 py-1 rounded-full {version.type ===
+                      'release'
+                        ? 'bg-green-500/20 text-green-400'
+                        : 'bg-yellow-500/20 text-yellow-400'}"
+                    >
+                      {version.type}
+                    </span>
+                  </div>
+                </button>
+              {/each}
+
+              {#if filteredVersions().length === 0}
+                <div class="text-center py-8 text-zinc-500">
+                  No versions found
+                </div>
+              {/if}
+            </div>
+          </div>
+        {:else if currentStep === 3}
+          <!-- Step 3: Mod Loader -->
+          <div class="space-y-4">
+            <div>
+              <div class="text-sm font-medium text-white/90 mb-3">
+                Mod Loader Type
+              </div>
+              <div class="flex gap-3">
+                {#each [
+                  { value: "vanilla", label: "Vanilla" },
+                  { value: "fabric", label: "Fabric" },
+                  { value: "forge", label: "Forge" },
+                ] as loader}
+                  <button
+                    onclick={() => {
+                      modLoaderType = loader.value as "vanilla" | "fabric" | "forge";
+                    }}
+                    class="flex-1 px-4 py-3 rounded-lg text-sm font-medium transition-colors {modLoaderType ===
+                    loader.value
+                      ? 'bg-indigo-600 text-white'
+                      : 'bg-zinc-800 text-zinc-400 hover:text-white'}"
+                  >
+                    {loader.label}
+                  </button>
+                {/each}
+              </div>
+            </div>
+
+            {#if modLoaderType === "fabric"}
+              <div>
+                <label for="fabric-loader" class="block text-sm font-medium text-white/90 mb-2">
+                  Fabric Loader Version
+                </label>
+                {#if loadingLoaders}
+                  <div class="flex items-center gap-2 text-zinc-400">
+                    <Loader2 size={16} class="animate-spin" />
+                    Loading Fabric versions...
+                  </div>
+                {:else if fabricLoaders.length > 0}
+                  <select
+                    id="fabric-loader"
+                    bind:value={selectedFabricLoader}
+                    class="w-full px-4 py-2 bg-zinc-800 border border-zinc-700 rounded-lg text-white focus:outline-none focus:ring-2 focus:ring-indigo-500"
+                  >
+                    {#each fabricLoaders as loader}
+                      <option value={loader.loader.version}>
+                        {loader.loader.version} {loader.loader.stable ? "(Stable)" : "(Beta)"}
+                      </option>
+                    {/each}
+                  </select>
+                {:else}
+                  <p class="text-sm text-red-400">No Fabric loaders available for this version</p>
+                {/if}
+              </div>
+            {:else if modLoaderType === "forge"}
+              <div>
+                <label for="forge-version" class="block text-sm font-medium text-white/90 mb-2">
+                  Forge Version
+                </label>
+                {#if loadingLoaders}
+                  <div class="flex items-center gap-2 text-zinc-400">
+                    <Loader2 size={16} class="animate-spin" />
+                    Loading Forge versions...
+                  </div>
+                {:else if forgeVersions.length > 0}
+                  <select
+                    id="forge-version"
+                    bind:value={selectedForgeLoader}
+                    class="w-full px-4 py-2 bg-zinc-800 border border-zinc-700 rounded-lg text-white focus:outline-none focus:ring-2 focus:ring-indigo-500"
+                  >
+                    {#each forgeVersions as version}
+                      <option value={version.version}>
+                        {version.version}
+                      </option>
+                    {/each}
+                  </select>
+                {:else}
+                  <p class="text-sm text-red-400">No Forge versions available for this version</p>
+                {/if}
+              </div>
+            {:else if modLoaderType === "vanilla"}
+              <p class="text-sm text-zinc-400">
+                Create a vanilla Minecraft instance without any mod loaders
+              </p>
+            {/if}
+          </div>
+        {/if}
+
+        {#if errorMessage}
+          <div
+            class="mt-4 p-3 bg-red-500/10 border border-red-500/30 rounded-lg text-red-400 text-sm"
+          >
+            {errorMessage}
+          </div>
+        {/if}
+      </div>
+
+      <!-- Footer -->
+      <div
+        class="flex items-center justify-between gap-3 p-6 border-t border-zinc-700"
+      >
+        <button
+          onclick={() => goToStep(currentStep - 1)}
+          disabled={currentStep === 1 || creating}
+          class="px-4 py-2 rounded-lg bg-zinc-800 hover:bg-zinc-700 text-white transition-colors disabled:opacity-50 disabled:cursor-not-allowed flex items-center gap-2"
+        >
+          <ChevronLeft size={16} />
+          Back
+        </button>
+
+        <div class="flex gap-3">
+          <button
+            onclick={handleClose}
+            disabled={creating}
+            class="px-4 py-2 rounded-lg bg-zinc-800 hover:bg-zinc-700 text-white transition-colors disabled:opacity-50"
+          >
+            Cancel
+          </button>
+
+          {#if currentStep < 3}
+            <button
+              onclick={handleNext}
+              disabled={creating}
+              class="px-4 py-2 rounded-lg bg-indigo-600 hover:bg-indigo-500 text-white transition-colors disabled:opacity-50 flex items-center gap-2"
+            >
+              Next
+              <ChevronRight size={16} />
+            </button>
+          {:else}
+            <button
+              onclick={handleCreate}
+              disabled={creating ||
+                !instanceName.trim() ||
+                !selectedVersion ||
+                (modLoaderType === "fabric" && !selectedFabricLoader) ||
+                (modLoaderType === "forge" && !selectedForgeLoader)}
+              class="px-4 py-2 rounded-lg bg-indigo-600 hover:bg-indigo-500 text-white transition-colors disabled:opacity-50 flex items-center gap-2"
+            >
+              {#if creating}
+                <Loader2 size={16} class="animate-spin" />
+                Creating...
+              {:else}
+                Create Instance
+              {/if}
+            </button>
+          {/if}
+        </div>
+      </div>
+    </div>
+  </div>
+{/if}
diff --git a/packages/ui/src/components/InstanceEditorModal.svelte b/packages/ui/src/components/InstanceEditorModal.svelte
new file mode 100644
index 0000000..0856d93
--- /dev/null
+++ b/packages/ui/src/components/InstanceEditorModal.svelte
@@ -0,0 +1,439 @@
+<script lang="ts">
+  import { invoke } from "@tauri-apps/api/core";
+  import { X, Save, Loader2, Trash2, FolderOpen } from "lucide-svelte";
+  import { instancesState } from "../stores/instances.svelte";
+  import { gameState } from "../stores/game.svelte";
+  import { settingsState } from "../stores/settings.svelte";
+  import type { Instance, FileInfo, FabricLoaderEntry, ForgeVersion } from "../types";
+  import ModLoaderSelector from "./ModLoaderSelector.svelte";
+
+  interface Props {
+    isOpen: boolean;
+    instance: Instance | null;
+    onClose: () => void;
+  }
+
+  let { isOpen, instance, onClose }: Props = $props();
+
+  // Tabs: "info" | "version" | "files" | "settings"
+  let activeTab = $state<"info" | "version" | "files" | "settings">("info");
+  let saving = $state(false);
+  let errorMessage = $state("");
+
+  // Info tab state
+  let editName = $state("");
+  let editNotes = $state("");
+
+  // Version tab state
+  let fabricLoaders = $state<FabricLoaderEntry[]>([]);
+  let forgeVersions = $state<ForgeVersion[]>([]);
+  let loadingVersions = $state(false);
+
+  // Files tab state
+  let selectedFileFolder = $state<"mods" | "resourcepacks" | "shaderpacks" | "saves" | "screenshots">("mods");
+  let fileList = $state<FileInfo[]>([]);
+  let loadingFiles = $state(false);
+  let deletingPath = $state<string | null>(null);
+
+  // Settings tab state
+  let editMemoryMin = $state(0);
+  let editMemoryMax = $state(0);
+  let editJavaArgs = $state("");
+
+  // Initialize form when instance changes
+  $effect(() => {
+    if (isOpen && instance) {
+      editName = instance.name;
+      editNotes = instance.notes || "";
+      editMemoryMin = instance.memory_override?.min || settingsState.settings.min_memory || 512;
+      editMemoryMax = instance.memory_override?.max || settingsState.settings.max_memory || 2048;
+      editJavaArgs = instance.jvm_args_override || "";
+      errorMessage = "";
+    }
+  });
+
+  // Load files when switching to files tab
+  $effect(() => {
+    if (isOpen && instance && activeTab === "files") {
+      loadFileList();
+    }
+  });
+
+  // Load file list for selected folder
+  async function loadFileList() {
+    if (!instance) return;
+    
+    loadingFiles = true;
+    try {
+      const files = await invoke<FileInfo[]>("list_instance_directory", {
+        instanceId: instance.id,
+        folder: selectedFileFolder,
+      });
+      fileList = files;
+    } catch (err) {
+      errorMessage = `Failed to load files: ${err}`;
+      fileList = [];
+    } finally {
+      loadingFiles = false;
+    }
+  }
+
+  // Change selected folder and reload
+  async function changeFolder(folder: "mods" | "resourcepacks" | "shaderpacks" | "saves" | "screenshots") {
+    selectedFileFolder = folder;
+    await loadFileList();
+  }
+
+  // Delete a file or directory
+  async function deleteFile(filePath: string) {
+    if (!confirm(`Are you sure you want to delete "${filePath.split("/").pop()}"?`)) {
+      return;
+    }
+
+    deletingPath = filePath;
+    try {
+      await invoke("delete_instance_file", { path: filePath });
+      // Reload file list
+      await loadFileList();
+    } catch (err) {
+      errorMessage = `Failed to delete file: ${err}`;
+    } finally {
+      deletingPath = null;
+    }
+  }
+
+  // Open file in system explorer
+  async function openInExplorer(filePath: string) {
+    try {
+      await invoke("open_file_explorer", { path: filePath });
+    } catch (err) {
+      errorMessage = `Failed to open file explorer: ${err}`;
+    }
+  }
+
+  // Save instance changes
+  async function saveChanges() {
+    if (!instance) return;
+    if (!editName.trim()) {
+      errorMessage = "Instance name cannot be empty";
+      return;
+    }
+
+    saving = true;
+    errorMessage = "";
+
+    try {
+      const updatedInstance: Instance = {
+        ...instance,
+        name: editName.trim(),
+        notes: editNotes.trim() || undefined,
+        memory_override: {
+          min: editMemoryMin,
+          max: editMemoryMax,
+        },
+        jvm_args_override: editJavaArgs.trim() || undefined,
+      };
+
+      await instancesState.updateInstance(updatedInstance);
+      onClose();
+    } catch (err) {
+      errorMessage = `Failed to save instance: ${err}`;
+    } finally {
+      saving = false;
+    }
+  }
+
+  function formatFileSize(bytes: number): string {
+    if (bytes === 0) return "0 B";
+    const k = 1024;
+    const sizes = ["B", "KB", "MB", "GB"];
+    const i = Math.floor(Math.log(bytes) / Math.log(k));
+    return Math.round((bytes / Math.pow(k, i)) * 100) / 100 + " " + sizes[i];
+  }
+
+  function formatDate(timestamp: number): string {
+    return new Date(timestamp * 1000).toLocaleDateString();
+  }
+</script>
+
+{#if isOpen && instance}
+  <div
+    class="fixed inset-0 z-[100] bg-black/80 backdrop-blur-sm flex items-center justify-center p-4"
+    role="dialog"
+    aria-modal="true"
+  >
+    <div
+      class="bg-zinc-900 border border-zinc-700 rounded-xl shadow-2xl w-full max-w-4xl max-h-[90vh] overflow-hidden flex flex-col"
+    >
+      <!-- Header -->
+      <div class="flex items-center justify-between p-6 border-b border-zinc-700">
+        <div>
+          <h2 class="text-xl font-bold text-white">Edit Instance</h2>
+          <p class="text-sm text-zinc-400 mt-1">{instance.name}</p>
+        </div>
+        <button
+          onclick={onClose}
+          disabled={saving}
+          class="p-2 rounded-lg hover:bg-zinc-800 text-zinc-400 hover:text-white transition-colors disabled:opacity-50"
+        >
+          <X size={20} />
+        </button>
+      </div>
+
+      <!-- Tab Navigation -->
+      <div class="flex gap-1 px-6 pt-4 border-b border-zinc-700">
+        {#each [
+          { id: "info", label: "Info" },
+          { id: "version", label: "Version" },
+          { id: "files", label: "Files" },
+          { id: "settings", label: "Settings" },
+        ] as tab}
+          <button
+            onclick={() => (activeTab = tab.id as any)}
+            class="px-4 py-2 text-sm font-medium transition-colors rounded-t-lg {activeTab === tab.id
+              ? 'bg-indigo-600 text-white'
+              : 'bg-zinc-800 text-zinc-400 hover:text-white'}"
+          >
+            {tab.label}
+          </button>
+        {/each}
+      </div>
+
+      <!-- Content Area -->
+      <div class="flex-1 overflow-y-auto p-6">
+        {#if activeTab === "info"}
+          <!-- Info Tab -->
+          <div class="space-y-4">
+            <div>
+              <label for="instance-name" class="block text-sm font-medium text-white/90 mb-2">
+                Instance Name
+              </label>
+              <input
+                id="instance-name"
+                type="text"
+                bind:value={editName}
+                class="w-full px-4 py-2 bg-zinc-800 border border-zinc-700 rounded-lg text-white placeholder-zinc-500 focus:outline-none focus:ring-2 focus:ring-indigo-500"
+                disabled={saving}
+              />
+            </div>
+
+            <div>
+              <label for="instance-notes" class="block text-sm font-medium text-white/90 mb-2">
+                Notes
+              </label>
+              <textarea
+                id="instance-notes"
+                bind:value={editNotes}
+                rows="4"
+                placeholder="Add notes about this instance..."
+                class="w-full px-4 py-2 bg-zinc-800 border border-zinc-700 rounded-lg text-white placeholder-zinc-500 focus:outline-none focus:ring-2 focus:ring-indigo-500 resize-none"
+                disabled={saving}
+              ></textarea>
+            </div>
+
+            <div class="grid grid-cols-2 gap-4 text-sm">
+              <div class="p-3 bg-zinc-800 rounded-lg">
+                <p class="text-zinc-400">Created</p>
+                <p class="text-white font-medium">{formatDate(instance.created_at)}</p>
+              </div>
+              <div class="p-3 bg-zinc-800 rounded-lg">
+                <p class="text-zinc-400">Last Played</p>
+                <p class="text-white font-medium">
+                  {instance.last_played ? formatDate(instance.last_played) : "Never"}
+                </p>
+              </div>
+              <div class="p-3 bg-zinc-800 rounded-lg">
+                <p class="text-zinc-400">Game Directory</p>
+                <p class="text-white font-medium text-xs truncate" title={instance.game_dir}>
+                  {instance.game_dir.split("/").pop()}
+                </p>
+              </div>
+              <div class="p-3 bg-zinc-800 rounded-lg">
+                <p class="text-zinc-400">Current Version</p>
+                <p class="text-white font-medium">{instance.version_id || "None"}</p>
+              </div>
+            </div>
+          </div>
+        {:else if activeTab === "version"}
+          <!-- Version Tab -->
+          <div class="space-y-4">
+            {#if instance.version_id}
+              <div class="p-4 bg-indigo-500/10 border border-indigo-500/30 rounded-lg">
+                <p class="text-sm text-indigo-400">
+                  Currently playing: <span class="font-medium">{instance.version_id}</span>
+                  {#if instance.mod_loader}
+                    with <span class="capitalize">{instance.mod_loader}</span>
+                    {instance.mod_loader_version && `${instance.mod_loader_version}`}
+                  {/if}
+                </p>
+              </div>
+            {/if}
+
+            <div>
+              <h3 class="text-sm font-medium text-white/90 mb-4">Change Version or Mod Loader</h3>
+              <ModLoaderSelector
+                selectedGameVersion={instance.version_id || ""}
+                onInstall={(versionId) => {
+                  // Version installed, update instance version_id
+                  instance.version_id = versionId;
+                  saveChanges();
+                }}
+              />
+            </div>
+          </div>
+        {:else if activeTab === "files"}
+          <!-- Files Tab -->
+          <div class="space-y-4">
+            <div class="flex gap-2 flex-wrap">
+              {#each ["mods", "resourcepacks", "shaderpacks", "saves", "screenshots"] as folder}
+                <button
+                  onclick={() => changeFolder(folder as any)}
+                  class="px-3 py-1.5 rounded-lg text-sm font-medium transition-colors {selectedFileFolder ===
+                  folder
+                    ? "bg-indigo-600 text-white"
+                    : "bg-zinc-800 text-zinc-400 hover:text-white"}"
+                >
+                  {folder}
+                </button>
+              {/each}
+            </div>
+
+            {#if loadingFiles}
+              <div class="flex items-center gap-2 text-zinc-400 py-8 justify-center">
+                <Loader2 size={16} class="animate-spin" />
+                Loading files...
+              </div>
+            {:else if fileList.length === 0}
+              <div class="text-center py-8 text-zinc-500">
+                No files in this folder
+              </div>
+            {:else}
+              <div class="space-y-2">
+                {#each fileList as file}
+                  <div
+                    class="flex items-center justify-between p-3 bg-zinc-800 rounded-lg hover:bg-zinc-700 transition-colors"
+                  >
+                    <div class="flex-1 min-w-0">
+                      <p class="font-medium text-white truncate">{file.name}</p>
+                      <p class="text-xs text-zinc-400">
+                        {file.is_directory ? "Folder" : formatFileSize(file.size)}
+                        • {formatDate(file.modified)}
+                      </p>
+                    </div>
+                    <div class="flex gap-2 ml-4">
+                      <button
+                        onclick={() => openInExplorer(file.path)}
+                        title="Open in explorer"
+                        class="p-2 rounded-lg hover:bg-zinc-600 text-zinc-400 hover:text-white transition-colors"
+                      >
+                        <FolderOpen size={16} />
+                      </button>
+                      <button
+                        onclick={() => deleteFile(file.path)}
+                        disabled={deletingPath === file.path}
+                        title="Delete"
+                        class="p-2 rounded-lg hover:bg-red-600/20 text-red-400 hover:text-red-300 transition-colors disabled:opacity-50"
+                      >
+                        {#if deletingPath === file.path}
+                          <Loader2 size={16} class="animate-spin" />
+                        {:else}
+                          <Trash2 size={16} />
+                        {/if}
+                      </button>
+                    </div>
+                  </div>
+                {/each}
+              </div>
+            {/if}
+          </div>
+        {:else if activeTab === "settings"}
+          <!-- Settings Tab -->
+          <div class="space-y-4">
+            <div>
+              <label for="min-memory" class="block text-sm font-medium text-white/90 mb-2">
+                Minimum Memory (MB)
+              </label>
+              <input
+                id="min-memory"
+                type="number"
+                bind:value={editMemoryMin}
+                min="256"
+                max={editMemoryMax}
+                class="w-full px-4 py-2 bg-zinc-800 border border-zinc-700 rounded-lg text-white focus:outline-none focus:ring-2 focus:ring-indigo-500"
+                disabled={saving}
+              />
+              <p class="text-xs text-zinc-400 mt-1">
+                Default: {settingsState.settings.min_memory}MB
+              </p>
+            </div>
+
+            <div>
+              <label for="max-memory" class="block text-sm font-medium text-white/90 mb-2">
+                Maximum Memory (MB)
+              </label>
+              <input
+                id="max-memory"
+                type="number"
+                bind:value={editMemoryMax}
+                min={editMemoryMin}
+                max="16384"
+                class="w-full px-4 py-2 bg-zinc-800 border border-zinc-700 rounded-lg text-white focus:outline-none focus:ring-2 focus:ring-indigo-500"
+                disabled={saving}
+              />
+              <p class="text-xs text-zinc-400 mt-1">
+                Default: {settingsState.settings.max_memory}MB
+              </p>
+            </div>
+
+            <div>
+              <label for="java-args" class="block text-sm font-medium text-white/90 mb-2">
+                JVM Arguments (Advanced)
+              </label>
+              <textarea
+                id="java-args"
+                bind:value={editJavaArgs}
+                rows="4"
+                placeholder="-XX:+UnlockExperimentalVMOptions -XX:G1NewCollectionPercentage=20..."
+                class="w-full px-4 py-2 bg-zinc-800 border border-zinc-700 rounded-lg text-white placeholder-zinc-500 focus:outline-none focus:ring-2 focus:ring-indigo-500 font-mono text-sm resize-none"
+                disabled={saving}
+              ></textarea>
+              <p class="text-xs text-zinc-400 mt-1">
+                Leave empty to use global Java arguments
+              </p>
+            </div>
+          </div>
+        {/if}
+
+        {#if errorMessage}
+          <div class="mt-4 p-3 bg-red-500/10 border border-red-500/30 rounded-lg text-red-400 text-sm">
+            {errorMessage}
+          </div>
+        {/if}
+      </div>
+
+      <!-- Footer -->
+      <div class="flex items-center justify-end gap-3 p-6 border-t border-zinc-700">
+        <button
+          onclick={onClose}
+          disabled={saving}
+          class="px-4 py-2 rounded-lg bg-zinc-800 hover:bg-zinc-700 text-white transition-colors disabled:opacity-50"
+        >
+          Cancel
+        </button>
+        <button
+          onclick={saveChanges}
+          disabled={saving || !editName.trim()}
+          class="px-4 py-2 rounded-lg bg-indigo-600 hover:bg-indigo-500 text-white transition-colors disabled:opacity-50 flex items-center gap-2"
+        >
+          {#if saving}
+            <Loader2 size={16} class="animate-spin" />
+            Saving...
+          {:else}
+            <Save size={16} />
+            Save Changes
+          {/if}
+        </button>
+      </div>
+    </div>
+  </div>
+{/if}
diff --git a/packages/ui/src/components/InstancesView.svelte b/packages/ui/src/components/InstancesView.svelte
new file mode 100644
index 0000000..5334f9e
--- /dev/null
+++ b/packages/ui/src/components/InstancesView.svelte
@@ -0,0 +1,259 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { instancesState } from "../stores/instances.svelte";
+  import { Plus, Trash2, Edit2, Copy, Check, X } from "lucide-svelte";
+  import type { Instance } from "../types";
+  import InstanceCreationModal from "./InstanceCreationModal.svelte";
+  import InstanceEditorModal from "./InstanceEditorModal.svelte";
+
+  let showCreateModal = $state(false);
+  let showEditModal = $state(false);
+  let showDeleteConfirm = $state(false);
+  let showDuplicateModal = $state(false);
+  let selectedInstance: Instance | null = $state(null);
+  let editingInstance: Instance | null = $state(null);
+  let newInstanceName = $state("");
+  let duplicateName = $state("");
+
+  onMount(() => {
+    instancesState.loadInstances();
+  });
+
+  function handleCreate() {
+    showCreateModal = true;
+  }
+
+  function handleEdit(instance: Instance) {
+    editingInstance = instance;
+  }
+
+  function handleDelete(instance: Instance) {
+    selectedInstance = instance;
+    showDeleteConfirm = true;
+  }
+
+  function handleDuplicate(instance: Instance) {
+    selectedInstance = instance;
+    duplicateName = `${instance.name} (Copy)`;
+    showDuplicateModal = true;
+  }
+
+  async function confirmDelete() {
+    if (!selectedInstance) return;
+    await instancesState.deleteInstance(selectedInstance.id);
+    showDeleteConfirm = false;
+    selectedInstance = null;
+  }
+
+  async function confirmDuplicate() {
+    if (!selectedInstance || !duplicateName.trim()) return;
+    await instancesState.duplicateInstance(selectedInstance.id, duplicateName.trim());
+    showDuplicateModal = false;
+    selectedInstance = null;
+    duplicateName = "";
+  }
+
+  function formatDate(timestamp: number): string {
+    return new Date(timestamp * 1000).toLocaleDateString();
+  }
+
+  function formatLastPlayed(timestamp: number): string {
+    const date = new Date(timestamp * 1000);
+    const now = new Date();
+    const diff = now.getTime() - date.getTime();
+    const days = Math.floor(diff / (1000 * 60 * 60 * 24));
+    
+    if (days === 0) return "Today";
+    if (days === 1) return "Yesterday";
+    if (days < 7) return `${days} days ago`;
+    return date.toLocaleDateString();
+  }
+</script>
+
+<div class="h-full flex flex-col gap-4 p-6 overflow-y-auto">
+  <div class="flex items-center justify-between">
+    <h1 class="text-2xl font-bold text-gray-900 dark:text-white">Instances</h1>
+    <button
+      onclick={handleCreate}
+      class="flex items-center gap-2 px-4 py-2 bg-blue-600 hover:bg-blue-700 text-white rounded-lg transition-colors"
+    >
+      <Plus size={18} />
+      Create Instance
+    </button>
+  </div>
+
+  {#if instancesState.instances.length === 0}
+    <div class="flex-1 flex items-center justify-center">
+      <div class="text-center text-gray-500 dark:text-gray-400">
+        <p class="text-lg mb-2">No instances yet</p>
+        <p class="text-sm">Create your first instance to get started</p>
+      </div>
+    </div>
+  {:else}
+    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+      {#each instancesState.instances as instance (instance.id)}
+        <div
+          role="button"
+          tabindex="0"
+          class="relative p-4 bg-gray-100 dark:bg-gray-800 rounded-lg border-2 transition-all cursor-pointer hover:border-blue-500 {instancesState.activeInstanceId === instance.id
+            ? 'border-blue-500'
+            : 'border-transparent'}"
+          onclick={() => instancesState.setActiveInstance(instance.id)}
+          onkeydown={(e) => e.key === "Enter" && instancesState.setActiveInstance(instance.id)}
+        >
+          {#if instancesState.activeInstanceId === instance.id}
+            <div class="absolute top-2 right-2">
+              <div class="w-3 h-3 bg-blue-500 rounded-full"></div>
+            </div>
+          {/if}
+
+          <div class="flex items-start justify-between mb-2">
+            <h3 class="text-lg font-semibold text-gray-900 dark:text-white">
+              {instance.name}
+            </h3>
+            <div class="flex gap-1">
+              <button
+                type="button"
+                onclick={(e) => {
+                  e.stopPropagation();
+                  handleEdit(instance);
+                }}
+                class="p-1 hover:bg-gray-200 dark:hover:bg-gray-700 rounded transition-colors"
+                title="Edit"
+              >
+                <Edit2 size={16} class="text-gray-600 dark:text-gray-400" />
+              </button>
+              <button
+                type="button"
+                onclick={(e) => {
+                  e.stopPropagation();
+                  handleDuplicate(instance);
+                }}
+                class="p-1 hover:bg-gray-200 dark:hover:bg-gray-700 rounded transition-colors"
+                title="Duplicate"
+              >
+                <Copy size={16} class="text-gray-600 dark:text-gray-400" />
+              </button>
+              <button
+                type="button"
+                onclick={(e) => {
+                  e.stopPropagation();
+                  handleDelete(instance);
+                }}
+                class="p-1 hover:bg-gray-200 dark:hover:bg-gray-700 rounded transition-colors"
+                title="Delete"
+              >
+                <Trash2 size={16} class="text-red-600 dark:text-red-400" />
+              </button>
+            </div>
+          </div>
+
+          <div class="space-y-1 text-sm text-gray-600 dark:text-gray-400">
+            {#if instance.version_id}
+              <p>Version: <span class="font-medium">{instance.version_id}</span></p>
+            {:else}
+              <p class="text-gray-400">No version selected</p>
+            {/if}
+
+            {#if instance.mod_loader && instance.mod_loader !== "vanilla"}
+              <p>
+                Mod Loader: <span class="font-medium capitalize">{instance.mod_loader}</span>
+                {#if instance.mod_loader_version}
+                  <span class="text-gray-500">({instance.mod_loader_version})</span>
+                {/if}
+              </p>
+            {/if}
+
+            <p>Created: {formatDate(instance.created_at)}</p>
+
+            {#if instance.last_played}
+              <p>Last played: {formatLastPlayed(instance.last_played)}</p>
+            {/if}
+          </div>
+
+          {#if instance.notes}
+            <p class="mt-2 text-sm text-gray-500 dark:text-gray-500 italic">
+              {instance.notes}
+            </p>
+          {/if}
+        </div>
+      {/each}
+    </div>
+  {/if}
+</div>
+
+<!-- Create Modal -->
+<InstanceCreationModal isOpen={showCreateModal} onClose={() => (showCreateModal = false)} />
+
+<!-- Instance Editor Modal -->
+<InstanceEditorModal
+  isOpen={editingInstance !== null}
+  instance={editingInstance}
+  onClose={() => {
+    editingInstance = null;
+  }}
+/>
+
+<!-- Delete Confirmation -->
+{#if showDeleteConfirm && selectedInstance}
+  <div class="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
+    <div class="bg-white dark:bg-gray-800 rounded-lg p-6 w-96">
+      <h2 class="text-xl font-bold mb-4 text-red-600 dark:text-red-400">Delete Instance</h2>
+      <p class="mb-4 text-gray-700 dark:text-gray-300">
+        Are you sure you want to delete "{selectedInstance.name}"? This action cannot be undone and will delete all game data for this instance.
+      </p>
+      <div class="flex gap-2 justify-end">
+        <button
+          onclick={() => {
+            showDeleteConfirm = false;
+            selectedInstance = null;
+          }}
+          class="px-4 py-2 bg-gray-200 dark:bg-gray-700 text-gray-900 dark:text-white rounded-lg hover:bg-gray-300 dark:hover:bg-gray-600 transition-colors"
+        >
+          Cancel
+        </button>
+        <button
+          onclick={confirmDelete}
+          class="px-4 py-2 bg-red-600 text-white rounded-lg hover:bg-red-700 transition-colors"
+        >
+          Delete
+        </button>
+      </div>
+    </div>
+  </div>
+{/if}
+
+<!-- Duplicate Modal -->
+{#if showDuplicateModal && selectedInstance}
+  <div class="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
+    <div class="bg-white dark:bg-gray-800 rounded-lg p-6 w-96">
+      <h2 class="text-xl font-bold mb-4 text-gray-900 dark:text-white">Duplicate Instance</h2>
+      <input
+        type="text"
+        bind:value={duplicateName}
+        placeholder="New instance name"
+        class="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white mb-4"
+        onkeydown={(e) => e.key === "Enter" && confirmDuplicate()}
+      />
+      <div class="flex gap-2 justify-end">
+        <button
+          onclick={() => {
+            showDuplicateModal = false;
+            selectedInstance = null;
+            duplicateName = "";
+          }}
+          class="px-4 py-2 bg-gray-200 dark:bg-gray-700 text-gray-900 dark:text-white rounded-lg hover:bg-gray-300 dark:hover:bg-gray-600 transition-colors"
+        >
+          Cancel
+        </button>
+        <button
+          onclick={confirmDuplicate}
+          disabled={!duplicateName.trim()}
+          class="px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
+        >
+          Duplicate
+        </button>
+      </div>
+    </div>
+  </div>
+{/if}
diff --git a/packages/ui/src/components/LoginModal.svelte b/packages/ui/src/components/LoginModal.svelte
new file mode 100644
index 0000000..1886cd9
--- /dev/null
+++ b/packages/ui/src/components/LoginModal.svelte
@@ -0,0 +1,126 @@
+<script lang="ts">
+  import { open } from "@tauri-apps/plugin-shell";
+  import { authState } from "../stores/auth.svelte";
+
+  function openLink(url: string) {
+    open(url);
+  }
+</script>
+
+{#if authState.isLoginModalOpen}
+  <div
+    class="fixed inset-0 z-[60] flex items-center justify-center bg-white/80 dark:bg-black/80 backdrop-blur-sm p-4"
+  >
+    <div
+      class="bg-white dark:bg-zinc-900 border border-zinc-200 dark:border-zinc-700 rounded-xl shadow-2xl p-6 w-full max-w-md animate-in fade-in zoom-in-0 duration-200"
+    >
+      <div class="flex justify-between items-center mb-6">
+        <h2 class="text-2xl font-bold text-gray-900 dark:text-white">Login</h2>
+        <button
+          onclick={() => authState.closeLoginModal()}
+          class="text-zinc-500 hover:text-black dark:hover:text-white transition group"
+        >
+          ✕
+        </button>
+      </div>
+
+      {#if authState.loginMode === "select"}
+        <div class="space-y-4">
+          <button
+            onclick={() => authState.startMicrosoftLogin()}
+            class="w-full flex items-center justify-center gap-3 bg-gray-100 hover:bg-gray-200 dark:bg-[#2F2F2F] dark:hover:bg-[#3F3F3F] text-gray-900 dark:text-white p-4 rounded-lg font-bold border border-transparent hover:border-zinc-400 dark:hover:border-zinc-500 transition-all group"
+          >
+            <!-- Microsoft Logo SVG -->
+            <svg
+              class="w-5 h-5"
+              viewBox="0 0 23 23"
+              fill="none"
+              xmlns="http://www.w3.org/2000/svg"
+              ><path fill="#f35325" d="M1 1h10v10H1z" /><path
+                fill="#81bc06"
+                d="M12 1h10v10H12z"
+              /><path fill="#05a6f0" d="M1 12h10v10H1z" /><path
+                fill="#ffba08"
+                d="M12 12h10v10H12z"
+              /></svg
+            >
+            Microsoft Account
+          </button>
+
+          <div class="relative py-2">
+            <div class="absolute inset-0 flex items-center">
+              <div class="w-full border-t border-zinc-200 dark:border-zinc-700"></div>
+            </div>
+            <div class="relative flex justify-center text-xs uppercase">
+              <span class="bg-white dark:bg-zinc-900 px-2 text-zinc-400 dark:text-zinc-500">OR</span>
+            </div>
+          </div>
+
+          <div class="space-y-2">
+            <input
+              type="text"
+              bind:value={authState.offlineUsername}
+              placeholder="Offline Username"
+              class="w-full bg-gray-50 border-zinc-200 dark:bg-zinc-950 dark:border-zinc-700 rounded p-3 text-gray-900 dark:text-white focus:border-indigo-500 outline-none"
+              onkeydown={(e) => e.key === "Enter" && authState.performOfflineLogin()}
+            />
+            <button
+              onclick={() => authState.performOfflineLogin()}
+              class="w-full bg-gray-200 hover:bg-gray-300 dark:bg-zinc-800 dark:hover:bg-zinc-700 text-gray-700 dark:text-zinc-300 p-3 rounded font-medium transition-colors"
+            >
+              Offline Login
+            </button>
+          </div>
+        </div>
+      {:else if authState.loginMode === "microsoft"}
+        <div class="text-center">
+          {#if authState.msLoginLoading && !authState.deviceCodeData}
+            <div class="py-8 text-zinc-400 animate-pulse">
+              Starting login flow...
+            </div>
+          {:else if authState.deviceCodeData}
+            <div class="space-y-4">
+              <p class="text-sm text-gray-500 dark:text-zinc-400">1. Go to this URL:</p>
+              <button
+                onclick={() =>
+                    authState.deviceCodeData && openLink(authState.deviceCodeData.verification_uri)}
+                class="text-indigo-600 dark:text-indigo-400 hover:text-indigo-500 dark:hover:text-indigo-300 underline break-all font-mono text-sm"
+              >
+                {authState.deviceCodeData.verification_uri}
+              </button>
+
+              <p class="text-sm text-gray-500 dark:text-zinc-400 mt-2">2. Enter this code:</p>
+              <div
+                class="bg-gray-50 dark:bg-zinc-950 p-4 rounded border border-zinc-200 dark:border-zinc-700 font-mono text-2xl tracking-widest text-center select-all cursor-pointer hover:border-indigo-500 transition-colors dark:text-white text-gray-900"
+                role="button"
+                tabindex="0"
+                onkeydown={(e) => e.key === 'Enter' && navigator.clipboard.writeText(authState.deviceCodeData?.user_code || "")}
+                onclick={() =>
+                  navigator.clipboard.writeText(
+                    authState.deviceCodeData?.user_code || ""
+                  )}
+              >
+                {authState.deviceCodeData.user_code}
+              </div>
+              <p class="text-xs text-zinc-500">Click code to copy</p>
+
+              <div class="pt-6 space-y-3">
+                   <div class="flex flex-col items-center gap-3">
+                       <div class="animate-spin rounded-full h-6 w-6 border-2 border-zinc-300 dark:border-zinc-600 border-t-indigo-500"></div>
+                       <span class="text-sm text-gray-600 dark:text-zinc-400 font-medium break-all text-center">{authState.msLoginStatus}</span>
+                   </div>
+                   <p class="text-xs text-zinc-600">This window will update automatically.</p>
+              </div>
+              
+              <button
+                onclick={() => { authState.stopPolling(); authState.loginMode = "select"; }}
+                class="text-xs text-zinc-500 hover:text-zinc-300 mt-6 underline"
+                >Cancel</button
+              >
+            </div>
+          {/if}
+        </div>
+      {/if}
+    </div>
+  </div>
+{/if}
diff --git a/packages/ui/src/components/ModLoaderSelector.svelte b/packages/ui/src/components/ModLoaderSelector.svelte
new file mode 100644
index 0000000..50caa8c
--- /dev/null
+++ b/packages/ui/src/components/ModLoaderSelector.svelte
@@ -0,0 +1,455 @@
+<script lang="ts">
+  import { invoke } from "@tauri-apps/api/core";
+  import { listen, type UnlistenFn } from "@tauri-apps/api/event";
+  import type {
+    FabricGameVersion,
+    FabricLoaderVersion,
+    ForgeVersion,
+    ModLoaderType,
+  } from "../types";
+  import { Loader2, Download, AlertCircle, Check, ChevronDown, CheckCircle } from 'lucide-svelte';
+  import { logsState } from "../stores/logs.svelte";
+  import { instancesState } from "../stores/instances.svelte";
+
+  interface Props {
+    selectedGameVersion: string;
+    onInstall: (versionId: string) => void;
+  }
+
+  let { selectedGameVersion, onInstall }: Props = $props();
+
+  // State
+  let selectedLoader = $state<ModLoaderType>("vanilla");
+  let isLoading = $state(false);
+  let isInstalling = $state(false);
+  let error = $state<string | null>(null);
+  let isVersionInstalled = $state(false);
+
+  // Fabric state
+  let fabricLoaders = $state<FabricLoaderVersion[]>([]);
+  let selectedFabricLoader = $state("");
+  let isFabricDropdownOpen = $state(false);
+
+  // Forge state
+  let forgeVersions = $state<ForgeVersion[]>([]);
+  let selectedForgeVersion = $state("");
+  let isForgeDropdownOpen = $state(false);
+
+  let fabricDropdownRef = $state<HTMLDivElement | null>(null);
+  let forgeDropdownRef = $state<HTMLDivElement | null>(null);
+
+  // Check if version is installed when game version changes
+  $effect(() => {
+    if (selectedGameVersion) {
+      checkInstallStatus();
+    }
+  });
+
+  // Load mod loader versions when game version or loader type changes
+  $effect(() => {
+    if (selectedGameVersion && selectedLoader !== "vanilla") {
+      loadModLoaderVersions();
+    }
+  });
+
+  async function checkInstallStatus() {
+    if (!selectedGameVersion || !instancesState.activeInstanceId) {
+      isVersionInstalled = false;
+      return;
+    }
+    try {
+      isVersionInstalled = await invoke<boolean>("check_version_installed", {
+        instanceId: instancesState.activeInstanceId,
+        versionId: selectedGameVersion,
+      });
+    } catch (e) {
+      console.error("Failed to check install status:", e);
+      isVersionInstalled = false;
+    }
+  }
+
+  async function loadModLoaderVersions() {
+    isLoading = true;
+    error = null;
+
+    try {
+      if (selectedLoader === "fabric") {
+        const loaders = await invoke<any[]>("get_fabric_loaders_for_version", {
+          gameVersion: selectedGameVersion,
+        });
+        fabricLoaders = loaders.map((l) => l.loader);
+        if (fabricLoaders.length > 0) {
+          const stable = fabricLoaders.find((l) => l.stable);
+          selectedFabricLoader = stable?.version || fabricLoaders[0].version;
+        }
+      } else if (selectedLoader === "forge") {
+        forgeVersions = await invoke<ForgeVersion[]>(
+          "get_forge_versions_for_game",
+          {
+            gameVersion: selectedGameVersion,
+          }
+        );
+        if (forgeVersions.length > 0) {
+          const recommended = forgeVersions.find((v) => v.recommended);
+          const latest = forgeVersions.find((v) => v.latest);
+          selectedForgeVersion =
+            recommended?.version || latest?.version || forgeVersions[0].version;
+        }
+      }
+    } catch (e) {
+      error = `Failed to load ${selectedLoader} versions: ${e}`;
+      console.error(e);
+    } finally {
+      isLoading = false;
+    }
+  }
+
+  async function installVanilla() {
+    if (!selectedGameVersion) {
+      error = "Please select a Minecraft version first";
+      return;
+    }
+
+    isInstalling = true;
+    error = null;
+    logsState.addLog("info", "Installer", `Starting installation of ${selectedGameVersion}...`);
+
+    if (!instancesState.activeInstanceId) {
+      error = "Please select an instance first";
+      return;
+    }
+    try {
+      await invoke("install_version", {
+        instanceId: instancesState.activeInstanceId,
+        versionId: selectedGameVersion,
+      });
+      logsState.addLog("info", "Installer", `Successfully installed ${selectedGameVersion}`);
+      isVersionInstalled = true;
+      onInstall(selectedGameVersion);
+    } catch (e) {
+      error = `Failed to install: ${e}`;
+      logsState.addLog("error", "Installer", `Installation failed: ${e}`);
+      console.error(e);
+    } finally {
+      isInstalling = false;
+    }
+  }
+
+  async function installModLoader() {
+    if (!selectedGameVersion) {
+      error = "Please select a Minecraft version first";
+      return;
+    }
+
+    if (!instancesState.activeInstanceId) {
+      error = "Please select an instance first";
+      isInstalling = false;
+      return;
+    }
+
+    isInstalling = true;
+    error = null;
+
+    try {
+      // First install the base game if not installed
+      if (!isVersionInstalled) {
+        logsState.addLog("info", "Installer", `Installing base game ${selectedGameVersion} first...`);
+        await invoke("install_version", {
+          instanceId: instancesState.activeInstanceId,
+          versionId: selectedGameVersion,
+        });
+        isVersionInstalled = true;
+      }
+
+      // Then install the mod loader
+      if (selectedLoader === "fabric" && selectedFabricLoader) {
+        logsState.addLog("info", "Installer", `Installing Fabric ${selectedFabricLoader} for ${selectedGameVersion}...`);
+        const result = await invoke<any>("install_fabric", {
+          instanceId: instancesState.activeInstanceId,
+          gameVersion: selectedGameVersion,
+          loaderVersion: selectedFabricLoader,
+        });
+        logsState.addLog("info", "Installer", `Fabric installed successfully: ${result.id}`);
+        onInstall(result.id);
+      } else if (selectedLoader === "forge" && selectedForgeVersion) {
+        logsState.addLog("info", "Installer", `Installing Forge ${selectedForgeVersion} for ${selectedGameVersion}...`);
+        const result = await invoke<any>("install_forge", {
+          instanceId: instancesState.activeInstanceId,
+          gameVersion: selectedGameVersion,
+          forgeVersion: selectedForgeVersion,
+        });
+        logsState.addLog("info", "Installer", `Forge installed successfully: ${result.id}`);
+        onInstall(result.id);
+      }
+    } catch (e) {
+      error = `Failed to install ${selectedLoader}: ${e}`;
+      logsState.addLog("error", "Installer", `Installation failed: ${e}`);
+      console.error(e);
+    } finally {
+      isInstalling = false;
+    }
+  }
+
+  function onLoaderChange(loader: ModLoaderType) {
+    selectedLoader = loader;
+    error = null;
+    if (loader !== "vanilla" && selectedGameVersion) {
+      loadModLoaderVersions();
+    }
+  }
+
+  function handleFabricClickOutside(e: MouseEvent) {
+    if (fabricDropdownRef && !fabricDropdownRef.contains(e.target as Node)) {
+      isFabricDropdownOpen = false;
+    }
+  }
+
+  function handleForgeClickOutside(e: MouseEvent) {
+    if (forgeDropdownRef && !forgeDropdownRef.contains(e.target as Node)) {
+      isForgeDropdownOpen = false;
+    }
+  }
+
+  $effect(() => {
+    if (isFabricDropdownOpen) {
+      document.addEventListener('click', handleFabricClickOutside);
+      return () => document.removeEventListener('click', handleFabricClickOutside);
+    }
+  });
+
+  $effect(() => {
+    if (isForgeDropdownOpen) {
+      document.addEventListener('click', handleForgeClickOutside);
+      return () => document.removeEventListener('click', handleForgeClickOutside);
+    }
+  });
+
+  let selectedFabricLabel = $derived(
+    fabricLoaders.find(l => l.version === selectedFabricLoader)
+      ? `${selectedFabricLoader}${fabricLoaders.find(l => l.version === selectedFabricLoader)?.stable ? ' (stable)' : ''}`
+      : selectedFabricLoader || 'Select version'
+  );
+
+  let selectedForgeLabel = $derived(
+    forgeVersions.find(v => v.version === selectedForgeVersion)
+      ? `${selectedForgeVersion}${forgeVersions.find(v => v.version === selectedForgeVersion)?.recommended ? ' (Recommended)' : ''}`
+      : selectedForgeVersion || 'Select version'
+  );
+</script>
+
+<div class="space-y-4">
+  <div class="flex items-center justify-between">
+      <h3 class="text-xs font-bold uppercase tracking-widest text-zinc-500">Loader Type</h3>
+  </div>
+
+  <!-- Loader Type Tabs - Simple Clean Style -->
+  <div class="flex p-1 bg-zinc-100 dark:bg-zinc-900/50 rounded-sm border border-zinc-200 dark:border-white/5">
+    {#each ['vanilla', 'fabric', 'forge'] as loader}
+        <button
+        class="flex-1 px-3 py-2 rounded-sm text-sm font-medium transition-all duration-200 capitalize
+        {selectedLoader === loader
+            ? 'bg-white dark:bg-white/10 text-black dark:text-white shadow-sm'
+            : 'text-zinc-500 dark:text-zinc-500 hover:text-black dark:hover:text-white'}"
+        onclick={() => onLoaderChange(loader as ModLoaderType)}
+        disabled={isInstalling}
+        >
+        {loader}
+        </button>
+    {/each}
+  </div>
+
+  <!-- Content Area -->
+  <div class="min-h-[100px] flex flex-col justify-center">
+    {#if !selectedGameVersion}
+        <div class="flex items-center gap-3 p-4 bg-amber-50 dark:bg-amber-500/10 border border-amber-200 dark:border-amber-500/20 text-amber-700 dark:text-amber-200 rounded-sm text-sm">
+           <AlertCircle size={16} />
+           <span>Please select a Minecraft version first.</span>
+        </div>
+        
+    {:else if selectedLoader === "vanilla"}
+        <div class="space-y-4 animate-in fade-in slide-in-from-bottom-2 duration-300">
+            <div class="text-center p-4 border border-dashed border-zinc-200 dark:border-white/10 rounded-sm text-zinc-500 text-sm">
+               Standard Minecraft experience. No modifications.
+            </div>
+            
+            {#if isVersionInstalled}
+                <div class="flex items-center justify-center gap-2 p-3 bg-emerald-50 dark:bg-emerald-500/10 border border-emerald-200 dark:border-emerald-500/20 text-emerald-700 dark:text-emerald-300 rounded-sm text-sm">
+                    <CheckCircle size={16} />
+                    <span>Version {selectedGameVersion} is installed</span>
+                </div>
+            {:else}
+                <button
+                    class="w-full bg-emerald-600 hover:bg-emerald-500 disabled:opacity-50 disabled:cursor-not-allowed text-white py-2.5 px-4 rounded-sm font-bold text-sm transition-all flex items-center justify-center gap-2"
+                    onclick={installVanilla}
+                    disabled={isInstalling}
+                >
+                    {#if isInstalling}
+                        <Loader2 class="animate-spin" size={16} />
+                        Installing...
+                    {:else}
+                        <Download size={16} />
+                        Install {selectedGameVersion}
+                    {/if}
+                </button>
+            {/if}
+        </div>
+        
+    {:else if isLoading}
+        <div class="flex flex-col items-center gap-3 text-sm text-zinc-500 py-6">
+            <Loader2 class="animate-spin" size={20} />
+            <span>Fetching {selectedLoader} manifest...</span>
+        </div>
+        
+    {:else if error}
+        <div class="p-4 bg-red-50 border border-red-200 text-red-700 dark:bg-red-500/10 dark:border-red-500/20 dark:text-red-300 rounded-sm text-sm break-words">
+            {error}
+        </div>
+        
+    {:else if selectedLoader === "fabric"}
+        <div class="space-y-4 animate-in fade-in slide-in-from-bottom-2 duration-300">
+        {#if fabricLoaders.length === 0}
+            <div class="text-center p-4 text-sm text-zinc-500 italic">
+            No Fabric versions available for {selectedGameVersion}
+            </div>
+        {:else}
+            <div>
+            <label for="fabric-loader-select" class="block text-[10px] uppercase font-bold text-zinc-500 mb-2"
+            >Loader Version</label
+            >
+            <!-- Custom Fabric Dropdown -->
+            <div class="relative" bind:this={fabricDropdownRef}>
+                <button
+                    type="button"
+                    onclick={() => isFabricDropdownOpen = !isFabricDropdownOpen}
+                    disabled={isInstalling}
+                    class="w-full flex items-center justify-between gap-2 px-4 py-2.5 text-left
+                           bg-white dark:bg-zinc-900 border border-zinc-300 dark:border-zinc-700 rounded-md 
+                           text-sm text-gray-900 dark:text-white
+                           hover:border-zinc-400 dark:hover:border-zinc-600 
+                           focus:border-indigo-500 focus:ring-1 focus:ring-indigo-500/30
+                           transition-colors cursor-pointer outline-none disabled:opacity-50"
+                >
+                    <span class="truncate">{selectedFabricLabel}</span>
+                    <ChevronDown 
+                        size={14} 
+                        class="shrink-0 text-zinc-400 dark:text-zinc-500 transition-transform duration-200 {isFabricDropdownOpen ? 'rotate-180' : ''}" 
+                    />
+                </button>
+
+                {#if isFabricDropdownOpen}
+                    <div 
+                        class="absolute z-50 w-full mt-1 py-1 bg-white dark:bg-zinc-900 border border-zinc-300 dark:border-zinc-700 rounded-md shadow-xl
+                               max-h-48 overflow-y-auto animate-in fade-in slide-in-from-top-1 duration-150"
+                    >
+                        {#each fabricLoaders as loader}
+                            <button
+                                type="button"
+                                onclick={() => { selectedFabricLoader = loader.version; isFabricDropdownOpen = false; }}
+                                class="w-full flex items-center justify-between px-3 py-2 text-sm text-left
+                                       transition-colors outline-none cursor-pointer
+                                       {loader.version === selectedFabricLoader 
+                                         ? 'bg-indigo-600 text-white' 
+                                         : 'text-gray-700 dark:text-zinc-300 hover:bg-zinc-100 dark:hover:bg-zinc-800'}"
+                            >
+                                <span class="truncate">{loader.version} {loader.stable ? "(stable)" : ""}</span>
+                                {#if loader.version === selectedFabricLoader}
+                                    <Check size={14} class="shrink-0 ml-2" />
+                                {/if}
+                            </button>
+                        {/each}
+                    </div>
+                {/if}
+            </div>
+            </div>
+            
+            <button
+                class="w-full bg-indigo-600 hover:bg-indigo-500 disabled:opacity-50 disabled:cursor-not-allowed text-white py-2.5 px-4 rounded-sm font-bold text-sm transition-all flex items-center justify-center gap-2"
+                onclick={installModLoader}
+                disabled={isInstalling || !selectedFabricLoader}
+            >
+                {#if isInstalling}
+                    <Loader2 class="animate-spin" size={16} />
+                    Installing...
+                {:else}
+                    <Download size={16} />
+                    Install Fabric {selectedFabricLoader}
+                {/if}
+            </button>
+        {/if}
+        </div>
+        
+    {:else if selectedLoader === "forge"}
+        <div class="space-y-4 animate-in fade-in slide-in-from-bottom-2 duration-300">
+        {#if forgeVersions.length === 0}
+            <div class="text-center p-4 text-sm text-zinc-500 italic">
+            No Forge versions available for {selectedGameVersion}
+            </div>
+        {:else}
+            <div>
+            <label for="forge-version-select" class="block text-[10px] uppercase font-bold text-zinc-500 mb-2"
+                >Forge Version</label
+            >
+            <!-- Custom Forge Dropdown -->
+            <div class="relative" bind:this={forgeDropdownRef}>
+                <button
+                    type="button"
+                    onclick={() => isForgeDropdownOpen = !isForgeDropdownOpen}
+                    disabled={isInstalling}
+                    class="w-full flex items-center justify-between gap-2 px-4 py-2.5 text-left
+                           bg-white dark:bg-zinc-900 border border-zinc-300 dark:border-zinc-700 rounded-md 
+                           text-sm text-gray-900 dark:text-white
+                           hover:border-zinc-400 dark:hover:border-zinc-600 
+                           focus:border-indigo-500 focus:ring-1 focus:ring-indigo-500/30
+                           transition-colors cursor-pointer outline-none disabled:opacity-50"
+                >
+                    <span class="truncate">{selectedForgeLabel}</span>
+                    <ChevronDown 
+                        size={14} 
+                        class="shrink-0 text-zinc-400 dark:text-zinc-500 transition-transform duration-200 {isForgeDropdownOpen ? 'rotate-180' : ''}" 
+                    />
+                </button>
+
+                {#if isForgeDropdownOpen}
+                    <div 
+                        class="absolute z-50 w-full mt-1 py-1 bg-white dark:bg-zinc-900 border border-zinc-300 dark:border-zinc-700 rounded-md shadow-xl
+                               max-h-48 overflow-y-auto animate-in fade-in slide-in-from-top-1 duration-150"
+                    >
+                        {#each forgeVersions as version}
+                            <button
+                                type="button"
+                                onclick={() => { selectedForgeVersion = version.version; isForgeDropdownOpen = false; }}
+                                class="w-full flex items-center justify-between px-3 py-2 text-sm text-left
+                                       transition-colors outline-none cursor-pointer
+                                       {version.version === selectedForgeVersion 
+                                         ? 'bg-indigo-600 text-white' 
+                                         : 'text-gray-700 dark:text-zinc-300 hover:bg-zinc-100 dark:hover:bg-zinc-800'}"
+                            >
+                                <span class="truncate">{version.version} {version.recommended ? "(Recommended)" : ""}</span>
+                                {#if version.version === selectedForgeVersion}
+                                    <Check size={14} class="shrink-0 ml-2" />
+                                {/if}
+                            </button>
+                        {/each}
+                    </div>
+                {/if}
+            </div>
+            </div>
+            
+            <button
+                class="w-full bg-orange-600 hover:bg-orange-500 disabled:opacity-50 disabled:cursor-not-allowed text-white py-2.5 px-4 rounded-sm font-bold text-sm transition-all flex items-center justify-center gap-2"
+                onclick={installModLoader}
+                disabled={isInstalling || !selectedForgeVersion}
+            >
+                {#if isInstalling}
+                    <Loader2 class="animate-spin" size={16} />
+                    Installing...
+                {:else}
+                    <Download size={16} />
+                    Install Forge {selectedForgeVersion}
+                {/if}
+            </button>
+        {/if}
+        </div>
+    {/if}
+  </div>
+</div>
diff --git a/packages/ui/src/components/ParticleBackground.svelte b/packages/ui/src/components/ParticleBackground.svelte
new file mode 100644
index 0000000..7644b1a
--- /dev/null
+++ b/packages/ui/src/components/ParticleBackground.svelte
@@ -0,0 +1,70 @@
+<script lang="ts" module>
+  import { SaturnEffect } from "../lib/effects/SaturnEffect";
+  
+  // Global reference to the active Saturn effect for external control
+  let globalSaturnEffect: SaturnEffect | null = null;
+  
+  export function getSaturnEffect(): SaturnEffect | null {
+    return globalSaturnEffect;
+  }
+</script>
+
+<script lang="ts">
+  import { onMount, onDestroy } from "svelte";
+  import { ConstellationEffect } from "../lib/effects/ConstellationEffect";
+  import { settingsState } from "../stores/settings.svelte";
+
+  let canvas: HTMLCanvasElement;
+  let activeEffect: any;
+
+  function loadEffect() {
+    if (activeEffect) {
+      activeEffect.destroy();
+    }
+    
+    if (!canvas) return;
+
+    if (settingsState.settings.active_effect === "saturn") {
+      activeEffect = new SaturnEffect(canvas);
+      globalSaturnEffect = activeEffect;
+    } else {
+      activeEffect = new ConstellationEffect(canvas);
+      globalSaturnEffect = null;
+    }
+    
+    // Ensure correct size immediately
+    activeEffect.resize(window.innerWidth, window.innerHeight);
+  }
+
+  $effect(() => {
+    const _ = settingsState.settings.active_effect;
+    if (canvas) {
+        loadEffect();
+    }
+  });
+
+  onMount(() => {
+    const resizeObserver = new ResizeObserver(() => {
+      if (canvas && activeEffect) {
+         activeEffect.resize(window.innerWidth, window.innerHeight);
+      }
+    });
+    
+    resizeObserver.observe(document.body);
+    
+    return () => {
+      resizeObserver.disconnect();
+      if (activeEffect) activeEffect.destroy();
+    };
+  });
+  
+  onDestroy(() => {
+    if (activeEffect) activeEffect.destroy();
+    globalSaturnEffect = null;
+  });
+</script>
+
+<canvas
+  bind:this={canvas}
+  class="absolute inset-0 z-0 pointer-events-none"
+></canvas>
diff --git a/packages/ui/src/components/SettingsView.svelte b/packages/ui/src/components/SettingsView.svelte
new file mode 100644
index 0000000..0020506
--- /dev/null
+++ b/packages/ui/src/components/SettingsView.svelte
@@ -0,0 +1,1217 @@
+<script lang="ts">
+  import { open } from "@tauri-apps/plugin-dialog";
+  import { settingsState } from "../stores/settings.svelte";
+  import CustomSelect from "./CustomSelect.svelte";
+  import ConfigEditorModal from "./ConfigEditorModal.svelte";
+  import { onMount } from "svelte";
+  import { RefreshCw, FileJson } from "lucide-svelte";
+
+  // Use convertFileSrc directly from settingsState.backgroundUrl for cleaner approach
+  // or use the imported one if passing raw path.
+  import { convertFileSrc } from "@tauri-apps/api/core";
+
+  const effectOptions = [
+    { value: "saturn", label: "Saturn" },
+    { value: "constellation", label: "Network (Constellation)" }
+  ];
+
+  const logServiceOptions = [
+    { value: "paste.rs", label: "paste.rs (Free, No Account)" },
+    { value: "pastebin.com", label: "pastebin.com (Requires API Key)" }
+  ];
+
+  const llmProviderOptions = [
+    { value: "ollama", label: "Ollama (Local)" },
+    { value: "openai", label: "OpenAI (Remote)" }
+  ];
+
+  const languageOptions = [
+    { value: "auto", label: "Auto (Match User)" },
+    { value: "English", label: "English" },
+    { value: "Chinese", label: "中文" },
+    { value: "Japanese", label: "日本語" },
+    { value: "Korean", label: "한국어" },
+    { value: "Spanish", label: "Español" },
+    { value: "French", label: "Français" },
+    { value: "German", label: "Deutsch" },
+    { value: "Russian", label: "Русский" },
+  ];
+
+  const ttsProviderOptions = [
+    { value: "disabled", label: "Disabled" },
+    { value: "piper", label: "Piper TTS (Local)" },
+    { value: "edge", label: "Edge TTS (Online)" },
+  ];
+
+  const personas = [
+    {
+      value: "default",
+      label: "Minecraft Expert (Default)",
+      prompt: "You are a helpful Minecraft expert assistant. You help players with game issues, mod installation, performance optimization, and gameplay tips. Analyze any game logs provided and give concise, actionable advice."
+    },
+    {
+      value: "technical",
+      label: "Technical Debugger",
+      prompt: "You are a technical support specialist for Minecraft. Focus strictly on analyzing logs, identifying crash causes, and providing technical solutions. Be precise and avoid conversational filler."
+    },
+    {
+      value: "concise",
+      label: "Concise Helper",
+      prompt: "You are a direct and concise assistant. Provide answers in as few words as possible while remaining accurate. Use bullet points for lists."
+    },
+    {
+      value: "explain",
+      label: "Teacher / Explainer",
+      prompt: "You are a patient teacher. Explain Minecraft concepts, redstone mechanics, and mod features in simple, easy-to-understand terms suitable for beginners."
+    },
+    {
+      value: "pirate",
+      label: "Pirate Captain",
+      prompt: "You are a salty Minecraft Pirate Captain! Yarr! Speak like a pirate while helping the crew (the user) with their blocky adventures. Use terms like 'matey', 'landlubber', and 'treasure'."
+    }
+  ];
+
+  let selectedPersona = $state("");
+
+  function applyPersona(value: string) {
+      const persona = personas.find(p => p.value === value);
+      if (persona) {
+          settingsState.settings.assistant.system_prompt = persona.prompt;
+          selectedPersona = value; // Keep selected to show what's active
+      }
+  }
+
+  function resetSystemPrompt() {
+      const defaultPersona = personas.find(p => p.value === "default");
+      if (defaultPersona) {
+          settingsState.settings.assistant.system_prompt = defaultPersona.prompt;
+          selectedPersona = "default";
+      }
+  }
+
+  // Load models when assistant settings are shown
+  function loadModelsForProvider() {
+    if (settingsState.settings.assistant.llm_provider === "ollama") {
+      settingsState.loadOllamaModels();
+    } else if (settingsState.settings.assistant.llm_provider === "openai") {
+      settingsState.loadOpenaiModels();
+    }
+  }
+
+  async function selectBackground() {
+    try {
+      const selected = await open({
+        multiple: false,
+        filters: [
+          {
+            name: "Images",
+            extensions: ["png", "jpg", "jpeg", "webp", "gif"],
+          },
+        ],
+      });
+
+      if (selected && typeof selected === "string") {
+        settingsState.settings.custom_background_path = selected;
+        settingsState.saveSettings();
+      }
+    } catch (e) {
+      console.error("Failed to select background:", e);
+    }
+  }
+
+  function clearBackground() {
+    settingsState.settings.custom_background_path = undefined;
+    settingsState.saveSettings();
+  }
+
+  let migrating = $state(false);
+  async function runMigrationToSharedCaches() {
+    if (migrating) return;
+    migrating = true;
+    try {
+      const { invoke } = await import("@tauri-apps/api/core");
+      const result = await invoke<{
+        moved_files: number;
+        hardlinks: number;
+        copies: number;
+        saved_mb: number;
+      }>("migrate_shared_caches");
+      
+      // Reload settings to reflect changes
+      await settingsState.loadSettings();
+      
+      // Show success message
+      const msg = `Migration complete! ${result.moved_files} files (${result.hardlinks} hardlinks, ${result.copies} copies), ${result.saved_mb.toFixed(2)} MB saved.`;
+      console.log(msg);
+      alert(msg);
+    } catch (e) {
+      console.error("Migration failed:", e);
+      alert(`Migration failed: ${e}`);
+    } finally {
+      migrating = false;
+    }
+  }
+</script>
+
+<div class="h-full flex flex-col p-6 overflow-hidden">
+  <div class="flex items-center justify-between mb-6">
+     <h2 class="text-3xl font-black bg-clip-text text-transparent bg-gradient-to-r dark:from-white dark:to-white/60 from-gray-900 to-gray-600">Settings</h2>
+     
+     <button 
+        onclick={() => settingsState.openConfigEditor()}
+        class="p-2 hover:bg-white/10 rounded-lg text-zinc-400 hover:text-white transition-colors flex items-center gap-2 text-sm border border-transparent hover:border-white/5"
+        title="Open Settings JSON"
+     >
+        <FileJson size={18} />
+        <span class="hidden sm:inline">Open JSON</span>
+     </button>
+  </div>
+
+  <div class="flex-1 overflow-y-auto pr-2 space-y-6 custom-scrollbar pb-10">
+
+    <!-- Appearance / Background -->
+    <div class="dark:bg-[#09090b] bg-white p-6 rounded-sm border dark:border-white/10 border-gray-200 shadow-sm">
+      <h3 class="text-xs font-bold uppercase tracking-widest dark:text-white/40 text-black/40 mb-6 flex items-center gap-2">
+        Appearance
+      </h3>
+      
+      <div class="space-y-4">
+        <div>
+          <label class="block text-sm font-medium dark:text-white/70 text-black/70 mb-3">Custom Background Image</label>
+          
+          <div class="flex items-center gap-6">
+            <!-- Preview -->
+            <div class="w-40 h-24 rounded-xl overflow-hidden dark:bg-black/50 bg-gray-200 border dark:border-white/10 border-black/10 relative group shadow-lg">
+              {#if settingsState.settings.custom_background_path}
+                <img
+                  src={convertFileSrc(settingsState.settings.custom_background_path)}
+                  alt="Background Preview"
+                  class="w-full h-full object-cover"
+                  onerror={(e) => {
+                    console.error("Failed to load image:", settingsState.settings.custom_background_path, e);
+                    // e.currentTarget.style.display = 'none'; 
+                  }}
+                />
+              {:else}
+                <div class="w-full h-full bg-gradient-to-br from-emerald-900 via-zinc-900 to-indigo-950 opacity-100"></div>
+                <div class="absolute inset-0 flex items-center justify-center text-[10px] text-white/50 bg-black/20 ">Default Gradient</div>
+              {/if}
+            </div>
+
+            <!-- Actions -->
+            <div class="flex flex-col gap-2">
+              <button
+                onclick={selectBackground}
+                class="dark:bg-white/10 dark:hover:bg-white/20 bg-black/5 hover:bg-black/10 dark:text-white text-black px-4 py-2 rounded-lg text-sm transition-colors border dark:border-white/5 border-black/5"
+              >
+                Select Image
+              </button>
+              
+              {#if settingsState.settings.custom_background_path}
+                <button
+                  onclick={clearBackground}
+                  class="text-red-400 hover:text-red-300 text-sm px-4 py-1 text-left transition-colors"
+                >
+                  Reset to Default
+                </button>
+              {/if}
+            </div>
+          </div>
+          <p class="text-xs dark:text-white/30 text-black/40 mt-3">
+            Select an image from your computer to replace the default gradient background.
+            Supported formats: PNG, JPG, WEBP, GIF.
+          </p>
+        </div>
+
+        <!-- Visual Settings -->
+        <div class="pt-4 border-t dark:border-white/5 border-black/5 space-y-4">
+             <div class="flex items-center justify-between">
+                <div>
+                   <h4 class="text-sm font-medium dark:text-white/90 text-black/80" id="visual-effects-label">Visual Effects</h4>
+                   <p class="text-xs dark:text-white/40 text-black/50 mt-1">Enable particle effects and animated gradients. (Default: On)</p>
+                </div>
+                <button 
+                    aria-labelledby="visual-effects-label"
+                    onclick={() => { settingsState.settings.enable_visual_effects = !settingsState.settings.enable_visual_effects; settingsState.saveSettings(); }}
+                    class="w-11 h-6 rounded-full transition-colors duration-200 ease-in-out relative focus:outline-none {settingsState.settings.enable_visual_effects ? 'bg-indigo-500' : 'dark:bg-white/10 bg-black/10'}"
+                >
+                    <div class="absolute top-1 left-1 bg-white w-4 h-4 rounded-full shadow-sm transition-transform duration-200 ease-in-out {settingsState.settings.enable_visual_effects ? 'translate-x-5' : 'translate-x-0'}"></div>
+                </button>
+             </div>
+
+             {#if settingsState.settings.enable_visual_effects}
+                 <div class="flex items-center justify-between pl-2 border-l-2 dark:border-white/5 border-black/5 ml-1">
+                    <div>
+                       <h4 class="text-sm font-medium dark:text-white/90 text-black/80" id="theme-effect-label">Theme Effect</h4>
+                       <p class="text-xs dark:text-white/40 text-black/50 mt-1">Select the active visual theme.</p>
+                    </div>
+                    <CustomSelect
+                        options={effectOptions}
+                        bind:value={settingsState.settings.active_effect}
+                        onchange={() => settingsState.saveSettings()}
+                        class="w-52"
+                    />
+                 </div>
+             {/if}
+
+             <div class="flex items-center justify-between">
+                <div>
+                   <h4 class="text-sm font-medium dark:text-white/90 text-black/80" id="gpu-acceleration-label">GPU Acceleration</h4>
+                   <p class="text-xs dark:text-white/40 text-black/50 mt-1">Enable GPU acceleration for the interface. (Default: Off, Requires Restart)</p>
+                </div>
+                <button 
+                    aria-labelledby="gpu-acceleration-label"
+                    onclick={() => { settingsState.settings.enable_gpu_acceleration = !settingsState.settings.enable_gpu_acceleration; settingsState.saveSettings(); }}
+                    class="w-11 h-6 rounded-full transition-colors duration-200 ease-in-out relative focus:outline-none {settingsState.settings.enable_gpu_acceleration ? 'bg-indigo-500' : 'dark:bg-white/10 bg-black/10'}"
+                >
+                    <div class="absolute top-1 left-1 bg-white w-4 h-4 rounded-full shadow-sm transition-transform duration-200 ease-in-out {settingsState.settings.enable_gpu_acceleration ? 'translate-x-5' : 'translate-x-0'}"></div>
+                </button>
+             </div>
+             
+             <!-- Color Theme Switcher -->
+             <div class="flex items-center justify-between pt-4 border-t dark:border-white/5 border-black/5 opacity-50 cursor-not-allowed">
+                <div>
+                   <h4 class="text-sm font-medium dark:text-white/90 text-black/80" id="color-theme-label">Color Theme</h4>
+                   <p class="text-xs dark:text-white/40 text-black/50 mt-1">Interface color mode. (Locked to Dark)</p>
+                </div>
+                <div class="flex items-center bg-black/5 dark:bg-white/5 rounded-lg p-1 pointer-events-none">
+                    <button
+                        disabled
+                        class="px-3 py-1 rounded-md text-xs font-medium transition-all text-gray-500 dark:text-gray-600"
+                    >
+                        Light
+                    </button>
+                    <button
+                        disabled
+                        class="px-3 py-1 rounded-md text-xs font-medium transition-all bg-indigo-500 text-white shadow-sm"
+                    >
+                        Dark
+                    </button>
+                </div>
+             </div>
+        </div>
+      </div>
+    </div>
+
+    <!-- Java Path -->
+    <div class="dark:bg-[#09090b] bg-white p-6 rounded-sm border dark:border-white/10 border-gray-200 shadow-sm">
+      <h3 class="text-xs font-bold uppercase tracking-widest text-white/40 mb-6 flex items-center gap-2">
+        Java Environment
+      </h3>
+      <div class="space-y-4">
+        <div>
+             <label for="java-path" class="block text-sm font-medium text-white/70 mb-2">Java Executable Path</label>
+             <div class="flex gap-2">
+                <input
+                id="java-path"
+                bind:value={settingsState.settings.java_path}
+                type="text"
+                class="bg-black/40 text-white flex-1 px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none font-mono text-xs transition-colors"
+                placeholder="e.g. java, /usr/bin/java"
+                />
+                <button
+                onclick={() => settingsState.detectJava()}
+                disabled={settingsState.isDetectingJava}
+                class="bg-white/10 hover:bg-white/20 disabled:opacity-50 text-white px-4 py-2 rounded-xl border border-white/5 transition-colors whitespace-nowrap text-sm font-medium"
+                >
+                {settingsState.isDetectingJava ? "Detecting..." : "Auto Detect"}
+                </button>
+                <button
+                onclick={() => settingsState.openJavaDownloadModal()}
+                class="bg-indigo-600 hover:bg-indigo-500 text-white px-4 py-2 rounded-xl transition-colors whitespace-nowrap text-sm font-medium"
+                >
+                Download Java
+                </button>
+            </div>
+        </div>
+      
+      {#if settingsState.javaInstallations.length > 0}
+        <div class="mt-4 space-y-2">
+          <p class="text-[10px] text-white/30 uppercase font-bold tracking-wider">Detected Installations</p>
+          {#each settingsState.javaInstallations as java}
+            <button
+              onclick={() => settingsState.selectJava(java.path)}
+              class="w-full text-left p-3 rounded-lg border transition-all duration-200 group
+              {settingsState.settings.java_path === java.path 
+                ? 'bg-indigo-500/20 border-indigo-500/30' 
+                : 'bg-black/20 border-white/5 hover:bg-white/5 hover:border-white/10'}"
+            >
+              <div class="flex justify-between items-center">
+                <div>
+                  <span class="text-white font-mono text-xs font-bold">{java.version}</span>
+                  <span class="text-white/40 text-[10px] ml-2">{java.is_64bit ? "64-bit" : "32-bit"}</span>
+                </div>
+                {#if settingsState.settings.java_path === java.path}
+                  <span class="text-indigo-300 text-[10px] font-bold uppercase tracking-wider">Selected</span>
+                {/if}
+              </div>
+              <div class="text-white/30 text-[10px] font-mono truncate mt-1 group-hover:text-white/50">{java.path}</div>
+            </button>
+          {/each}
+        </div>
+      {/if}
+      </div>
+    </div>
+
+    <!-- Memory -->
+    <div class="dark:bg-[#09090b] bg-white p-6 rounded-sm border dark:border-white/10 border-gray-200 shadow-sm">
+      <h3 class="text-xs font-bold uppercase tracking-widest text-white/40 mb-6 flex items-center gap-2">
+        Memory Allocation (RAM)
+      </h3>
+      <div class="grid grid-cols-2 gap-6">
+        <div>
+          <label for="min-memory" class="block text-sm font-medium text-white/70 mb-2">Minimum (MB)</label>
+          <input
+            id="min-memory"
+            bind:value={settingsState.settings.min_memory}
+            type="number"
+            class="bg-black/40 text-white w-full px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none transition-colors"
+          />
+        </div>
+        <div>
+          <label for="max-memory" class="block text-sm font-medium text-white/70 mb-2">Maximum (MB)</label>
+          <input
+            id="max-memory"
+            bind:value={settingsState.settings.max_memory}
+            type="number"
+            class="bg-black/40 text-white w-full px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none transition-colors"
+          />
+        </div>
+      </div>
+    </div>
+
+    <!-- Resolution -->
+    <div class="dark:bg-[#09090b] bg-white p-6 rounded-sm border dark:border-white/10 border-gray-200 shadow-sm">
+      <h3 class="text-xs font-bold uppercase tracking-widest text-white/40 mb-6 flex items-center gap-2">
+        Game Window Size
+      </h3>
+      <div class="grid grid-cols-2 gap-6">
+        <div>
+          <label for="window-width" class="block text-sm font-medium text-white/70 mb-2">Width</label>
+          <input
+            id="window-width"
+            bind:value={settingsState.settings.width}
+            type="number"
+            class="bg-black/40 text-white w-full px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none transition-colors"
+          />
+        </div>
+        <div>
+          <label for="window-height" class="block text-sm font-medium text-white/70 mb-2">Height</label>
+          <input
+            id="window-height"
+            bind:value={settingsState.settings.height}
+            type="number"
+            class="bg-black/40 text-white w-full px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none transition-colors"
+          />
+        </div>
+      </div>
+    </div>
+
+    <!-- Download Settings -->
+    <div class="dark:bg-[#09090b] bg-white p-6 rounded-sm border dark:border-white/10 border-gray-200 shadow-sm">
+        <h3 class="text-xs font-bold uppercase tracking-widest text-white/40 mb-6 flex items-center gap-2">
+            Network
+        </h3>
+        <div>
+            <label for="download-threads" class="block text-sm font-medium text-white/70 mb-2">Concurrent Download Threads</label>
+            <input
+              id="download-threads"
+              bind:value={settingsState.settings.download_threads}
+              type="number"
+              min="1"
+              max="128"
+              class="bg-black/40 text-white w-full px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none transition-colors"
+            />
+            <p class="text-xs text-white/30 mt-2">Higher values usually mean faster downloads but use more CPU/Network.</p>
+        </div>
+    </div>
+
+    <!-- Storage & Caches -->
+    <div class="dark:bg-[#09090b] bg-white p-6 rounded-sm border dark:border-white/10 border-gray-200 shadow-sm">
+      <h3 class="text-xs font-bold uppercase tracking-widest text-white/40 mb-6 flex items-center gap-2">Storage & Version Caches</h3>
+      <div class="space-y-4">
+        <div class="flex items-center justify-between">
+          <div>
+            <h4 class="text-sm font-medium text-white/90" id="shared-caches-label">Use Shared Caches</h4>
+            <p class="text-xs text-white/40 mt-1">Store versions/libraries/assets in a global cache shared by all instances.</p>
+          </div>
+          <button
+            aria-labelledby="shared-caches-label"
+            onclick={() => { settingsState.settings.use_shared_caches = !settingsState.settings.use_shared_caches; settingsState.saveSettings(); }}
+            class="w-11 h-6 rounded-full transition-colors duration-200 ease-in-out relative focus:outline-none {settingsState.settings.use_shared_caches ? 'bg-indigo-500' : 'bg-white/10'}"
+          >
+            <div class="absolute top-1 left-1 bg-white w-4 h-4 rounded-full shadow-sm transition-transform duration-200 ease-in-out {settingsState.settings.use_shared_caches ? 'translate-x-5' : 'translate-x-0'}"></div>
+          </button>
+        </div>
+
+        <div class="flex items-center justify-between">
+          <div>
+            <h4 class="text-sm font-medium text-white/90" id="legacy-storage-label">Keep Legacy Per-Instance Storage</h4>
+            <p class="text-xs text-white/40 mt-1">Do not migrate existing instance caches; keep current layout.</p>
+          </div>
+          <button
+            aria-labelledby="legacy-storage-label"
+            onclick={() => { settingsState.settings.keep_legacy_per_instance_storage = !settingsState.settings.keep_legacy_per_instance_storage; settingsState.saveSettings(); }}
+            class="w-11 h-6 rounded-full transition-colors duration-200 ease-in-out relative focus:outline-none {settingsState.settings.keep_legacy_per_instance_storage ? 'bg-indigo-500' : 'bg-white/10'}"
+          >
+            <div class="absolute top-1 left-1 bg-white w-4 h-4 rounded-full shadow-sm transition-transform duration-200 ease-in-out {settingsState.settings.keep_legacy_per_instance_storage ? 'translate-x-5' : 'translate-x-0'}"></div>
+          </button>
+        </div>
+
+        <div class="flex items-center justify-between pt-2 border-t border-white/10">
+          <div>
+            <h4 class="text-sm font-medium text-white/90">Run Migration</h4>
+            <p class="text-xs text-white/40 mt-1">Hard-link or copy existing per-instance caches into the shared cache.</p>
+          </div>
+          <button 
+            onclick={runMigrationToSharedCaches} 
+            disabled={migrating}
+            class="px-4 py-2 rounded-lg bg-indigo-600 hover:bg-indigo-500 text-white text-sm disabled:opacity-50 disabled:cursor-not-allowed"
+          >
+            {migrating ? "Migrating..." : "Migrate Now"}
+          </button>
+        </div>
+      </div>
+    </div>
+
+    <!-- Feature Flags -->
+    <div class="dark:bg-[#09090b] bg-white p-6 rounded-sm border dark:border-white/10 border-gray-200 shadow-sm">
+      <h3 class="text-xs font-bold uppercase tracking-widest text-white/40 mb-6 flex items-center gap-2">Feature Flags (Launcher Arguments)</h3>
+      <div class="space-y-4">
+        <div class="flex items-center justify-between">
+          <div>
+            <h4 class="text-sm font-medium text-white/90" id="demo-user-label">Demo User</h4>
+            <p class="text-xs text-white/40 mt-1">Enable demo-related arguments when rules require them.</p>
+          </div>
+          <button
+            aria-labelledby="demo-user-label"
+            onclick={() => { settingsState.settings.feature_flags.demo_user = !settingsState.settings.feature_flags.demo_user; settingsState.saveSettings(); }}
+            class="w-11 h-6 rounded-full transition-colors duration-200 ease-in-out relative focus:outline-none {settingsState.settings.feature_flags.demo_user ? 'bg-indigo-500' : 'bg-white/10'}"
+          >
+            <div class="absolute top-1 left-1 bg-white w-4 h-4 rounded-full shadow-sm transition-transform duration-200 ease-in-out {settingsState.settings.feature_flags.demo_user ? 'translate-x-5' : 'translate-x-0'}"></div>
+          </button>
+        </div>
+
+        <div class="flex items-center justify-between">
+          <div>
+            <h4 class="text-sm font-medium text-white/90" id="quick-play-label">Quick Play</h4>
+            <p class="text-xs text-white/40 mt-1">Enable quick play singleplayer/multiplayer arguments.</p>
+          </div>
+          <button
+            aria-labelledby="quick-play-label"
+            onclick={() => { settingsState.settings.feature_flags.quick_play_enabled = !settingsState.settings.feature_flags.quick_play_enabled; settingsState.saveSettings(); }}
+            class="w-11 h-6 rounded-full transition-colors duration-200 ease-in-out relative focus:outline-none {settingsState.settings.feature_flags.quick_play_enabled ? 'bg-indigo-500' : 'bg-white/10'}"
+          >
+            <div class="absolute top-1 left-1 bg-white w-4 h-4 rounded-full shadow-sm transition-transform duration-200 ease-in-out {settingsState.settings.feature_flags.quick_play_enabled ? 'translate-x-5' : 'translate-x-0'}"></div>
+          </button>
+        </div>
+
+        {#if settingsState.settings.feature_flags.quick_play_enabled}
+          <div class="grid grid-cols-1 md:grid-cols-2 gap-4 pl-2 border-l-2 border-white/10">
+            <div>
+              <label class="block text-sm font-medium text-white/70 mb-2">Singleplayer World Path</label>
+              <input
+                type="text"
+                bind:value={settingsState.settings.feature_flags.quick_play_path}
+                placeholder="/path/to/saves/MyWorld"
+                class="bg-black/40 text-white w-full px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none font-mono text-xs transition-colors"
+              />
+            </div>
+            <div class="flex items-center justify-between">
+              <div>
+                <h4 class="text-sm font-medium text-white/90" id="qp-singleplayer-label">Prefer Singleplayer</h4>
+                <p class="text-xs text-white/40 mt-1">If enabled, use singleplayer quick play path.</p>
+              </div>
+              <button
+                aria-labelledby="qp-singleplayer-label"
+                onclick={() => { settingsState.settings.feature_flags.quick_play_singleplayer = !settingsState.settings.feature_flags.quick_play_singleplayer; settingsState.saveSettings(); }}
+                class="w-11 h-6 rounded-full transition-colors duration-200 ease-in-out relative focus:outline-none {settingsState.settings.feature_flags.quick_play_singleplayer ? 'bg-indigo-500' : 'bg-white/10'}"
+              >
+                <div class="absolute top-1 left-1 bg-white w-4 h-4 rounded-full shadow-sm transition-transform duration-200 ease-in-out {settingsState.settings.feature_flags.quick_play_singleplayer ? 'translate-x-5' : 'translate-x-0'}"></div>
+              </button>
+            </div>
+            <div>
+              <label class="block text-sm font-medium text-white/70 mb-2">Multiplayer Server Address</label>
+              <input
+                type="text"
+                bind:value={settingsState.settings.feature_flags.quick_play_multiplayer_server}
+                placeholder="example.org:25565"
+                class="bg-black/40 text-white w-full px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none font-mono text-xs transition-colors"
+              />
+            </div>
+          </div>
+        {/if}
+      </div>
+    </div>
+
+    <!-- Debug / Logs -->
+    <div class="dark:bg-[#09090b] bg-white p-6 rounded-sm border dark:border-white/10 border-gray-200 shadow-sm">
+        <h3 class="text-xs font-bold uppercase tracking-widest text-white/40 mb-6 flex items-center gap-2">
+            Debug & Logs
+        </h3>
+        <div class="space-y-4">
+            <div>
+                <label for="log-service" class="block text-sm font-medium text-white/70 mb-2">Log Upload Service</label>
+                <CustomSelect
+                    options={logServiceOptions}
+                    bind:value={settingsState.settings.log_upload_service}
+                    class="w-full"
+                />
+            </div>
+
+            {#if settingsState.settings.log_upload_service === 'pastebin.com'}
+                <div>
+                    <label for="pastebin-key" class="block text-sm font-medium text-white/70 mb-2">Pastebin Dev API Key</label>
+                    <input
+                        id="pastebin-key"
+                        type="password"
+                        bind:value={settingsState.settings.pastebin_api_key}
+                        placeholder="Enter your API Key"
+                        class="dark:bg-zinc-900 bg-white dark:text-white text-black w-full px-4 py-3 rounded-xl border dark:border-zinc-700 border-gray-300 focus:border-indigo-500 focus:ring-1 focus:ring-indigo-500/30 outline-none transition-colors placeholder:text-zinc-500"
+                    />
+                    <p class="text-xs text-white/30 mt-2">
+                        Get your API key from <a href="https://pastebin.com/doc_api#1" target="_blank" class="text-indigo-400 hover:underline">Pastebin API Documentation</a>.
+                    </p>
+                </div>
+            {/if}
+        </div>
+    </div>
+
+    <!-- AI Assistant -->
+    <div class="dark:bg-[#09090b] bg-white p-6 rounded-sm border dark:border-white/10 border-gray-200 shadow-sm">
+        <h3 class="text-xs font-bold uppercase tracking-widest text-white/40 mb-6 flex items-center gap-2">
+            <svg class="w-4 h-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                <rect x="3" y="11" width="18" height="10" rx="2"/>
+                <circle cx="12" cy="5" r="2"/>
+                <path d="M12 7v4"/>
+                <circle cx="8" cy="16" r="1" fill="currentColor"/>
+                <circle cx="16" cy="16" r="1" fill="currentColor"/>
+            </svg>
+            AI Assistant
+        </h3>
+        <div class="space-y-6">
+            <!-- Enable/Disable -->
+            <div class="flex items-center justify-between">
+                <div>
+                   <h4 class="text-sm font-medium dark:text-white/90 text-black/80" id="assistant-enabled-label">Enable Assistant</h4>
+                   <p class="text-xs dark:text-white/40 text-black/50 mt-1">Toggle the AI assistant feature on or off.</p>
+                </div>
+                <button 
+                    aria-labelledby="assistant-enabled-label"
+                    onclick={() => { settingsState.settings.assistant.enabled = !settingsState.settings.assistant.enabled; settingsState.saveSettings(); }}
+                    class="w-11 h-6 rounded-full transition-colors duration-200 ease-in-out relative focus:outline-none {settingsState.settings.assistant.enabled ? 'bg-indigo-500' : 'dark:bg-white/10 bg-black/10'}"
+                >
+                    <div class="absolute top-1 left-1 bg-white w-4 h-4 rounded-full shadow-sm transition-transform duration-200 ease-in-out {settingsState.settings.assistant.enabled ? 'translate-x-5' : 'translate-x-0'}"></div>
+                </button>
+            </div>
+
+            {#if settingsState.settings.assistant.enabled}
+                <!-- LLM Provider Section -->
+                <div class="pt-4 border-t dark:border-white/5 border-black/5">
+                    <h4 class="text-xs font-bold uppercase tracking-widest text-white/30 mb-4">Language Model</h4>
+                    
+                    <div class="space-y-4">
+                        <div>
+                            <label for="llm-provider" class="block text-sm font-medium text-white/70 mb-2">Provider</label>
+                            <CustomSelect
+                                options={llmProviderOptions}
+                                bind:value={settingsState.settings.assistant.llm_provider}
+                                onchange={() => settingsState.saveSettings()}
+                                class="w-full"
+                            />
+                        </div>
+
+                        {#if settingsState.settings.assistant.llm_provider === 'ollama'}
+                            <!-- Ollama Settings -->
+                            <div class="pl-4 border-l-2 border-indigo-500/30 space-y-4">
+                                <div>
+                                    <label for="ollama-endpoint" class="block text-sm font-medium text-white/70 mb-2">API Endpoint</label>
+                                    <div class="flex gap-2">
+                                        <input
+                                            id="ollama-endpoint"
+                                            type="text"
+                                            bind:value={settingsState.settings.assistant.ollama_endpoint}
+                                            placeholder="http://localhost:11434"
+                                            class="bg-black/40 text-white flex-1 px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none font-mono text-xs transition-colors"
+                                        />
+                                        <button
+                                            onclick={() => settingsState.loadOllamaModels()}
+                                            disabled={settingsState.isLoadingOllamaModels}
+                                            class="px-4 py-2 bg-white/10 hover:bg-white/20 disabled:opacity-50 text-white rounded-xl border border-white/5 transition-colors whitespace-nowrap text-sm font-medium flex items-center gap-2"
+                                            title="Refresh models"
+                                        >
+                                            <RefreshCw size={14} class={settingsState.isLoadingOllamaModels ? "animate-spin" : ""} />
+                                            <span class="hidden sm:inline">Refresh</span>
+                                        </button>
+                                    </div>
+                                    <p class="text-xs text-white/30 mt-2">
+                                        Default: http://localhost:11434. Make sure Ollama is running.
+                                    </p>
+                                </div>
+
+                                <div>
+                                    <div class="flex items-center justify-between mb-2">
+                                        <label for="ollama-model" class="block text-sm font-medium text-white/70">Model</label>
+                                        {#if settingsState.ollamaModels.length > 0}
+                                            <span class="text-[10px] text-emerald-400 bg-emerald-500/10 px-2 py-0.5 rounded-full">
+                                                {settingsState.ollamaModels.length} installed
+                                            </span>
+                                        {/if}
+                                    </div>
+                                    
+                                    {#if settingsState.isLoadingOllamaModels}
+                                        <div class="bg-black/40 text-white/50 w-full px-4 py-3 rounded-xl border border-white/10 text-sm flex items-center gap-2">
+                                            <RefreshCw size={14} class="animate-spin" />
+                                            Loading models...
+                                        </div>
+                                    {:else if settingsState.ollamaModelsError}
+                                        <div class="bg-red-500/10 text-red-400 w-full px-4 py-3 rounded-xl border border-red-500/20 text-sm">
+                                            {settingsState.ollamaModelsError}
+                                        </div>
+                                        <CustomSelect
+                                            options={settingsState.currentModelOptions}
+                                            bind:value={settingsState.settings.assistant.ollama_model}
+                                            onchange={() => settingsState.saveSettings()}
+                                            class="w-full mt-2"
+                                            allowCustom={true}
+                                        />
+                                    {:else if settingsState.ollamaModels.length === 0}
+                                        <div class="bg-amber-500/10 text-amber-400 w-full px-4 py-3 rounded-xl border border-amber-500/20 text-sm">
+                                            No models found. Click Refresh to load installed models.
+                                        </div>
+                                        <CustomSelect
+                                            options={settingsState.currentModelOptions}
+                                            bind:value={settingsState.settings.assistant.ollama_model}
+                                            onchange={() => settingsState.saveSettings()}
+                                            class="w-full mt-2"
+                                            allowCustom={true}
+                                        />
+                                    {:else}
+                                        <CustomSelect
+                                            options={settingsState.currentModelOptions}
+                                            bind:value={settingsState.settings.assistant.ollama_model}
+                                            onchange={() => settingsState.saveSettings()}
+                                            class="w-full"
+                                            allowCustom={true}
+                                        />
+                                    {/if}
+                                    
+                                    <p class="text-xs text-white/30 mt-2">
+                                        Run <code class="bg-black/30 px-1 rounded">ollama pull {'<model>'}</code> to download new models. Or type a custom model name above.
+                                    </p>
+                                </div>
+                            </div>
+                        {:else if settingsState.settings.assistant.llm_provider === 'openai'}
+                            <!-- OpenAI Settings -->
+                            <div class="pl-4 border-l-2 border-emerald-500/30 space-y-4">
+                                <div>
+                                    <label for="openai-key" class="block text-sm font-medium text-white/70 mb-2">API Key</label>
+                                    <div class="flex gap-2">
+                                        <input
+                                            id="openai-key"
+                                            type="password"
+                                            bind:value={settingsState.settings.assistant.openai_api_key}
+                                            placeholder="sk-..."
+                                            class="bg-black/40 text-white flex-1 px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none font-mono text-xs transition-colors"
+                                        />
+                                        <button
+                                            onclick={() => settingsState.loadOpenaiModels()}
+                                            disabled={settingsState.isLoadingOpenaiModels || !settingsState.settings.assistant.openai_api_key}
+                                            class="px-4 py-2 bg-white/10 hover:bg-white/20 disabled:opacity-50 text-white rounded-xl border border-white/5 transition-colors whitespace-nowrap text-sm font-medium flex items-center gap-2"
+                                            title="Refresh models"
+                                        >
+                                            <RefreshCw size={14} class={settingsState.isLoadingOpenaiModels ? "animate-spin" : ""} />
+                                            <span class="hidden sm:inline">Load</span>
+                                        </button>
+                                    </div>
+                                    <p class="text-xs text-white/30 mt-2">
+                                        Get your API key from <a href="https://platform.openai.com/api-keys" target="_blank" class="text-indigo-400 hover:underline">OpenAI Dashboard</a>.
+                                    </p>
+                                </div>
+
+                                <div>
+                                    <label for="openai-endpoint" class="block text-sm font-medium text-white/70 mb-2">API Endpoint</label>
+                                    <input
+                                        id="openai-endpoint"
+                                        type="text"
+                                        bind:value={settingsState.settings.assistant.openai_endpoint}
+                                        placeholder="https://api.openai.com/v1"
+                                        class="bg-black/40 text-white w-full px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none font-mono text-xs transition-colors"
+                                    />
+                                    <p class="text-xs text-white/30 mt-2">
+                                        Use custom endpoint for Azure OpenAI or other compatible APIs.
+                                    </p>
+                                </div>
+
+                                <div>
+                                    <div class="flex items-center justify-between mb-2">
+                                        <label for="openai-model" class="block text-sm font-medium text-white/70">Model</label>
+                                        {#if settingsState.openaiModels.length > 0}
+                                            <span class="text-[10px] text-emerald-400 bg-emerald-500/10 px-2 py-0.5 rounded-full">
+                                                {settingsState.openaiModels.length} available
+                                            </span>
+                                        {/if}
+                                    </div>
+                                    
+                                    {#if settingsState.isLoadingOpenaiModels}
+                                        <div class="bg-black/40 text-white/50 w-full px-4 py-3 rounded-xl border border-white/10 text-sm flex items-center gap-2">
+                                            <RefreshCw size={14} class="animate-spin" />
+                                            Loading models...
+                                        </div>
+                                    {:else if settingsState.openaiModelsError}
+                                        <div class="bg-red-500/10 text-red-400 w-full px-4 py-3 rounded-xl border border-red-500/20 text-sm mb-2">
+                                            {settingsState.openaiModelsError}
+                                        </div>
+                                        <CustomSelect
+                                            options={settingsState.currentModelOptions}
+                                            bind:value={settingsState.settings.assistant.openai_model}
+                                            onchange={() => settingsState.saveSettings()}
+                                            class="w-full"
+                                            allowCustom={true}
+                                        />
+                                    {:else}
+                                        <CustomSelect
+                                            options={settingsState.currentModelOptions}
+                                            bind:value={settingsState.settings.assistant.openai_model}
+                                            onchange={() => settingsState.saveSettings()}
+                                            class="w-full"
+                                            allowCustom={true}
+                                        />
+                                    {/if}
+                                </div>
+                            </div>
+                        {/if}
+                    </div>
+                </div>
+
+                <!-- Response Settings -->
+                <div class="pt-4 border-t dark:border-white/5 border-black/5">
+                    <h4 class="text-xs font-bold uppercase tracking-widest text-white/30 mb-4">Response Settings</h4>
+                    
+                    <div class="space-y-4">
+                        <div>
+                            <label for="response-lang" class="block text-sm font-medium text-white/70 mb-2">Response Language</label>
+                            <CustomSelect
+                                options={languageOptions}
+                                bind:value={settingsState.settings.assistant.response_language}
+                                onchange={() => settingsState.saveSettings()}
+                                class="w-full"
+                            />
+                        </div>
+
+                        <div>
+                            <div class="flex items-center justify-between mb-2">
+                                <label for="system-prompt" class="block text-sm font-medium text-white/70">System Prompt</label>
+                                <button 
+                                    onclick={resetSystemPrompt}
+                                    class="text-xs text-indigo-400 hover:text-indigo-300 transition-colors flex items-center gap-1 opacity-80 hover:opacity-100"
+                                    title="Reset to default prompt"
+                                >
+                                    <RefreshCw size={10} />
+                                    Reset
+                                </button>
+                            </div>
+
+                            <div class="mb-3">
+                                <CustomSelect 
+                                    options={personas.map(p => ({ value: p.value, label: p.label }))}
+                                    bind:value={selectedPersona}
+                                    placeholder="Load a preset persona..."
+                                    onchange={applyPersona}
+                                    class="w-full"
+                                />
+                            </div>
+
+                            <textarea
+                                id="system-prompt"
+                                bind:value={settingsState.settings.assistant.system_prompt}
+                                oninput={() => selectedPersona = ""} 
+                                rows="4"
+                                placeholder="You are a helpful Minecraft expert assistant..."
+                                class="bg-black/40 text-white w-full px-4 py-3 rounded-xl border border-white/10 focus:border-indigo-500/50 outline-none text-sm transition-colors resize-none"
+                            ></textarea>
+                            <p class="text-xs text-white/30 mt-2">
+                                Customize how the assistant behaves and responds.
+                            </p>
+                        </div>
+                    </div>
+                </div>
+
+                <!-- TTS Settings -->
+                <div class="pt-4 border-t dark:border-white/5 border-black/5">
+                    <h4 class="text-xs font-bold uppercase tracking-widest text-white/30 mb-4">Text-to-Speech (Coming Soon)</h4>
+                    
+                    <div class="space-y-4 opacity-50 pointer-events-none">
+                        <div class="flex items-center justify-between">
+                            <div>
+                               <h4 class="text-sm font-medium dark:text-white/90 text-black/80">Enable TTS</h4>
+                               <p class="text-xs dark:text-white/40 text-black/50 mt-1">Read assistant responses aloud.</p>
+                            </div>
+                            <button 
+                                disabled
+                                class="w-11 h-6 rounded-full transition-colors duration-200 ease-in-out relative focus:outline-none dark:bg-white/10 bg-black/10"
+                            >
+                                <div class="absolute top-1 left-1 bg-white w-4 h-4 rounded-full shadow-sm transition-transform duration-200 ease-in-out translate-x-0"></div>
+                            </button>
+                        </div>
+
+                        <div>
+                            <label class="block text-sm font-medium text-white/70 mb-2">TTS Provider</label>
+                            <CustomSelect
+                                options={ttsProviderOptions}
+                                value="disabled"
+                                class="w-full"
+                            />
+                        </div>
+                    </div>
+                </div>
+            {/if}
+        </div>
+    </div>
+
+    <div class="pt-4 flex justify-end">
+      <button
+        onclick={() => settingsState.saveSettings()}
+        class="bg-gradient-to-r from-emerald-600 to-green-600 hover:from-emerald-500 hover:to-green-500 text-white font-bold py-3 px-8 rounded-xl shadow-lg shadow-emerald-500/20 transition-all hover:scale-105 active:scale-95"
+      >
+        Save Settings
+      </button>
+    </div>
+  </div>
+</div>
+
+{#if settingsState.showConfigEditor}
+    <ConfigEditorModal />
+{/if}
+
+<!-- Java Download Modal -->
+{#if settingsState.showJavaDownloadModal}
+  <div class="fixed inset-0 z-[100] flex items-center justify-center backdrop-blur-sm bg-black/70">
+    <div class="bg-zinc-900 rounded-2xl border border-white/10 shadow-2xl w-[900px] max-w-[95vw] h-[600px] max-h-[90vh] flex flex-col overflow-hidden">
+      <!-- Header -->
+      <div class="flex items-center justify-between p-5 border-b border-white/10">
+        <h3 class="text-xl font-bold text-white">Download Java</h3>
+        <button
+          aria-label="Close dialog"
+          onclick={() => settingsState.closeJavaDownloadModal()}
+          disabled={settingsState.isDownloadingJava}
+          class="text-white/40 hover:text-white/80 disabled:opacity-50 transition-colors p-1"
+        >
+          <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
+          </svg>
+        </button>
+      </div>
+
+      <!-- Main Content Area -->
+      <div class="flex flex-1 overflow-hidden">
+        <!-- Left Sidebar: Sources -->
+        <div class="w-40 border-r border-white/10 p-3 flex flex-col gap-1">
+          <span class="text-[10px] font-bold uppercase tracking-widest text-white/30 px-2 mb-2">Sources</span>
+          
+          <button
+            disabled
+            class="flex items-center gap-2 px-3 py-2.5 rounded-lg text-left text-sm opacity-40 cursor-not-allowed text-white/50"
+          >
+            <div class="w-5 h-5 rounded bg-white/10 flex items-center justify-center text-[10px]">M</div>
+            Mojang
+          </button>
+          
+          <button
+            class="flex items-center gap-2 px-3 py-2.5 rounded-lg text-left text-sm bg-indigo-500/20 border border-indigo-500/40 text-white"
+          >
+            <div class="w-5 h-5 rounded bg-indigo-500 flex items-center justify-center text-[10px] font-bold">A</div>
+            Adoptium
+          </button>
+          
+          <button
+            disabled
+            class="flex items-center gap-2 px-3 py-2.5 rounded-lg text-left text-sm opacity-40 cursor-not-allowed text-white/50"
+          >
+            <div class="w-5 h-5 rounded bg-white/10 flex items-center justify-center text-[10px]">Z</div>
+            Azul Zulu
+          </button>
+        </div>
+
+        <!-- Center: Version Selection -->
+        <div class="flex-1 flex flex-col overflow-hidden">
+          <!-- Toolbar -->
+          <div class="flex items-center gap-3 p-4 border-b border-white/5">
+            <!-- Search -->
+            <div class="relative flex-1 max-w-xs">
+              <input
+                type="text"
+                bind:value={settingsState.searchQuery}
+                placeholder="Search versions..."
+                class="w-full bg-black/30 text-white text-sm px-4 py-2 pl-9 rounded-lg border border-white/10 focus:border-indigo-500/50 outline-none"
+              />
+              <svg class="absolute left-3 top-2.5 w-4 h-4 text-white/30" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"/>
+              </svg>
+            </div>
+            
+            <!-- Recommended Filter -->
+            <label class="flex items-center gap-2 text-sm text-white/60 cursor-pointer select-none">
+              <input
+                type="checkbox"
+                bind:checked={settingsState.showOnlyRecommended}
+                class="w-4 h-4 rounded border-white/20 bg-black/30 text-indigo-500 focus:ring-indigo-500/30"
+              />
+              LTS Only
+            </label>
+
+            <!-- Image Type Toggle -->
+            <div class="flex items-center bg-black/30 rounded-lg p-0.5 border border-white/10">
+              <button
+                onclick={() => settingsState.selectedImageType = "jre"}
+                class="px-3 py-1.5 rounded-md text-xs font-medium transition-all {settingsState.selectedImageType === 'jre' ? 'bg-indigo-500 text-white shadow' : 'text-white/50 hover:text-white/80'}"
+              >
+                JRE
+              </button>
+              <button
+                onclick={() => settingsState.selectedImageType = "jdk"}
+                class="px-3 py-1.5 rounded-md text-xs font-medium transition-all {settingsState.selectedImageType === 'jdk' ? 'bg-indigo-500 text-white shadow' : 'text-white/50 hover:text-white/80'}"
+              >
+                JDK
+              </button>
+            </div>
+          </div>
+
+          <!-- Loading State -->
+          {#if settingsState.isLoadingCatalog}
+            <div class="flex-1 flex items-center justify-center text-white/50">
+              <div class="flex flex-col items-center gap-3">
+                <div class="w-8 h-8 border-2 border-indigo-500/30 border-t-indigo-500 rounded-full animate-spin"></div>
+                <span class="text-sm">Loading Java versions...</span>
+              </div>
+            </div>
+          {:else if settingsState.catalogError}
+            <div class="flex-1 flex items-center justify-center text-red-400">
+              <div class="flex flex-col items-center gap-3 text-center px-8">
+                <svg class="w-10 h-10" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"/>
+                </svg>
+                <span class="text-sm">{settingsState.catalogError}</span>
+                <button
+                  onclick={() => settingsState.refreshCatalog()}
+                  class="mt-2 px-4 py-2 bg-white/10 hover:bg-white/20 rounded-lg text-sm text-white transition-colors"
+                >
+                  Retry
+                </button>
+              </div>
+            </div>
+          {:else}
+            <!-- Version List -->
+            <div class="flex-1 overflow-auto p-4">
+              <div class="space-y-2">
+                {#each settingsState.availableMajorVersions as version}
+                  {@const isLts = settingsState.javaCatalog?.lts_versions.includes(version)}
+                  {@const isSelected = settingsState.selectedMajorVersion === version}
+                  {@const releaseInfo = settingsState.javaCatalog?.releases.find(r => r.major_version === version && r.image_type === settingsState.selectedImageType)}
+                  {@const isAvailable = releaseInfo?.is_available ?? false}
+                  {@const installStatus = releaseInfo ? settingsState.getInstallStatus(releaseInfo) : 'download'}
+                  
+                  <button
+                    onclick={() => settingsState.selectMajorVersion(version)}
+                    disabled={!isAvailable}
+                    class="w-full flex items-center gap-4 p-3 rounded-xl border transition-all text-left
+                      {isSelected 
+                        ? 'bg-indigo-500/20 border-indigo-500/50 ring-2 ring-indigo-500/30' 
+                        : isAvailable 
+                          ? 'bg-black/20 border-white/10 hover:bg-white/5 hover:border-white/20' 
+                          : 'bg-black/10 border-white/5 opacity-40 cursor-not-allowed'}"
+                  >
+                    <!-- Version Number -->
+                    <div class="w-14 text-center">
+                      <span class="text-xl font-bold {isSelected ? 'text-white' : 'text-white/80'}">{version}</span>
+                    </div>
+                    
+                    <!-- Version Details -->
+                    <div class="flex-1 min-w-0">
+                      <div class="flex items-center gap-2">
+                        <span class="text-sm text-white/70 font-mono truncate">{releaseInfo?.version ?? '--'}</span>
+                        {#if isLts}
+                          <span class="px-1.5 py-0.5 bg-emerald-500/20 text-emerald-400 text-[9px] font-bold rounded uppercase shrink-0">LTS</span>
+                        {/if}
+                      </div>
+                      {#if releaseInfo}
+                        <div class="text-[10px] text-white/40 truncate mt-0.5">
+                          {releaseInfo.release_name} • {settingsState.formatBytes(releaseInfo.file_size)}
+                        </div>
+                      {/if}
+                    </div>
+                    
+                    <!-- Install Status Badge -->
+                    <div class="shrink-0">
+                      {#if installStatus === 'installed'}
+                        <span class="px-2 py-1 bg-emerald-500/20 text-emerald-400 text-[10px] font-bold rounded uppercase">Installed</span>
+                      {:else if isAvailable}
+                        <span class="px-2 py-1 bg-white/10 text-white/50 text-[10px] font-medium rounded">Download</span>
+                      {:else}
+                        <span class="px-2 py-1 bg-red-500/10 text-red-400/60 text-[10px] font-medium rounded">N/A</span>
+                      {/if}
+                    </div>
+                  </button>
+                {/each}
+              </div>
+            </div>
+          {/if}
+        </div>
+
+        <!-- Right Sidebar: Details -->
+        <div class="w-64 border-l border-white/10 flex flex-col">
+          <div class="p-4 border-b border-white/5">
+            <span class="text-[10px] font-bold uppercase tracking-widest text-white/30">Details</span>
+          </div>
+          
+          {#if settingsState.selectedRelease}
+            <div class="flex-1 p-4 space-y-4 overflow-auto">
+              <div>
+                <div class="text-[10px] text-white/40 uppercase tracking-wider mb-1">Version</div>
+                <div class="text-sm text-white font-mono">{settingsState.selectedRelease.version}</div>
+              </div>
+              
+              <div>
+                <div class="text-[10px] text-white/40 uppercase tracking-wider mb-1">Release Name</div>
+                <div class="text-sm text-white">{settingsState.selectedRelease.release_name}</div>
+              </div>
+              
+              <div>
+                <div class="text-[10px] text-white/40 uppercase tracking-wider mb-1">Release Date</div>
+                <div class="text-sm text-white">{settingsState.formatDate(settingsState.selectedRelease.release_date)}</div>
+              </div>
+              
+              <div>
+                <div class="text-[10px] text-white/40 uppercase tracking-wider mb-1">Size</div>
+                <div class="text-sm text-white">{settingsState.formatBytes(settingsState.selectedRelease.file_size)}</div>
+              </div>
+              
+              <div>
+                <div class="text-[10px] text-white/40 uppercase tracking-wider mb-1">Type</div>
+                <div class="flex items-center gap-2">
+                  <span class="text-sm text-white uppercase">{settingsState.selectedRelease.image_type}</span>
+                  {#if settingsState.selectedRelease.is_lts}
+                    <span class="px-1.5 py-0.5 bg-emerald-500/20 text-emerald-400 text-[9px] font-bold rounded">LTS</span>
+                  {/if}
+                </div>
+              </div>
+              
+              <div>
+                <div class="text-[10px] text-white/40 uppercase tracking-wider mb-1">Architecture</div>
+                <div class="text-sm text-white">{settingsState.selectedRelease.architecture}</div>
+              </div>
+              
+              {#if !settingsState.selectedRelease.is_available}
+                <div class="mt-4 p-3 bg-red-500/10 border border-red-500/20 rounded-lg">
+                  <div class="text-xs text-red-400">Not available for your platform</div>
+                </div>
+              {/if}
+            </div>
+          {:else}
+            <div class="flex-1 flex items-center justify-center text-white/30 text-sm p-4 text-center">
+              Select a Java version to view details
+            </div>
+          {/if}
+        </div>
+      </div>
+
+      <!-- Download Progress (MC Style) -->
+      {#if settingsState.isDownloadingJava && settingsState.downloadProgress}
+        <div class="border-t border-white/10 p-4 bg-zinc-900/90">
+          <div class="flex items-center justify-between mb-2">
+            <h3 class="text-white font-bold text-sm">Downloading Java</h3>
+            <span class="text-xs text-zinc-400">{settingsState.downloadProgress.status}</span>
+          </div>
+          
+          <!-- Progress Bar -->
+          <div class="mb-2">
+            <div class="flex justify-between text-[10px] text-zinc-400 mb-1">
+              <span>{settingsState.downloadProgress.file_name}</span>
+              <span>{Math.round(settingsState.downloadProgress.percentage)}%</span>
+            </div>
+            <div class="w-full bg-zinc-800 rounded-full h-2.5 overflow-hidden">
+              <div 
+                class="bg-gradient-to-r from-blue-500 to-cyan-400 h-2.5 rounded-full transition-all duration-200"
+                style="width: {settingsState.downloadProgress.percentage}%"
+              ></div>
+            </div>
+          </div>
+          
+          <!-- Speed & Stats -->
+          <div class="flex justify-between text-[10px] text-zinc-500 font-mono">
+            <span>
+              {settingsState.formatBytes(settingsState.downloadProgress.speed_bytes_per_sec)}/s · 
+              ETA: {settingsState.formatTime(settingsState.downloadProgress.eta_seconds)}
+            </span>
+            <span>
+              {settingsState.formatBytes(settingsState.downloadProgress.downloaded_bytes)} / 
+              {settingsState.formatBytes(settingsState.downloadProgress.total_bytes)}
+            </span>
+          </div>
+        </div>
+      {/if}
+
+      <!-- Pending Downloads Alert -->
+      {#if settingsState.pendingDownloads.length > 0 && !settingsState.isDownloadingJava}
+        <div class="border-t border-amber-500/30 p-4 bg-amber-500/10">
+          <div class="flex items-center justify-between">
+            <div class="flex items-center gap-3">
+              <svg class="w-5 h-5 text-amber-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"/>
+              </svg>
+              <span class="text-sm text-amber-200">
+                {settingsState.pendingDownloads.length} pending download(s) can be resumed
+              </span>
+            </div>
+            <button
+              onclick={() => settingsState.resumeDownloads()}
+              class="px-4 py-2 bg-amber-500/20 hover:bg-amber-500/30 text-amber-200 rounded-lg text-sm font-medium transition-colors"
+            >
+              Resume All
+            </button>
+          </div>
+        </div>
+      {/if}
+
+      <!-- Footer Actions -->
+      <div class="flex items-center justify-between p-4 border-t border-white/10 bg-black/20">
+        <button
+          onclick={() => settingsState.refreshCatalog()}
+          disabled={settingsState.isLoadingCatalog || settingsState.isDownloadingJava}
+          class="flex items-center gap-2 px-4 py-2 bg-white/5 hover:bg-white/10 disabled:opacity-50 text-white/70 rounded-lg text-sm transition-colors"
+        >
+          <svg class="w-4 h-4 {settingsState.isLoadingCatalog ? 'animate-spin' : ''}" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"/>
+          </svg>
+          Refresh
+        </button>
+
+        <div class="flex gap-3">
+          {#if settingsState.isDownloadingJava}
+            <button
+              onclick={() => settingsState.cancelDownload()}
+              class="px-5 py-2.5 bg-red-500/20 hover:bg-red-500/30 text-red-400 rounded-lg text-sm font-medium transition-colors"
+            >
+              Cancel Download
+            </button>
+          {:else}
+            {@const isInstalled = settingsState.selectedRelease ? settingsState.getInstallStatus(settingsState.selectedRelease) === 'installed' : false}
+            <button
+              onclick={() => settingsState.closeJavaDownloadModal()}
+              class="px-5 py-2.5 bg-white/10 hover:bg-white/20 text-white rounded-lg text-sm font-medium transition-colors"
+            >
+              Close
+            </button>
+            <button
+              onclick={() => settingsState.downloadJava()}
+              disabled={!settingsState.selectedRelease?.is_available || settingsState.isLoadingCatalog || isInstalled}
+              class="px-5 py-2.5 bg-indigo-600 hover:bg-indigo-500 disabled:opacity-50 disabled:cursor-not-allowed text-white rounded-lg text-sm font-medium transition-colors"
+            >
+              {isInstalled ? 'Already Installed' : 'Download & Install'}
+            </button>
+          {/if}
+        </div>
+      </div>
+    </div>
+  </div>
+{/if}
diff --git a/packages/ui/src/components/Sidebar.svelte b/packages/ui/src/components/Sidebar.svelte
new file mode 100644
index 0000000..83f4ac6
--- /dev/null
+++ b/packages/ui/src/components/Sidebar.svelte
@@ -0,0 +1,91 @@
+<script lang="ts">
+  import { uiState } from '../stores/ui.svelte';
+  import { Home, Package, Settings, Bot, Folder } from 'lucide-svelte';
+</script>
+
+<aside
+  class="w-20 lg:w-64 dark:bg-[#09090b] bg-white border-r dark:border-white/10 border-gray-200 flex flex-col items-center lg:items-start transition-all duration-300 shrink-0 py-6 z-20"
+>
+  <!-- Logo Area -->
+  <div
+    class="h-16 w-full flex items-center justify-center lg:justify-start lg:px-6 mb-6"
+  >
+    <!-- Icon Logo (Small) -->
+    <div class="lg:hidden text-black dark:text-white">
+      <svg width="32" height="32" viewBox="0 0 100 100" fill="none" xmlns="http://www.w3.org/2000/svg">
+        <path d="M25 25 L50 50" stroke="currentColor" stroke-width="4" stroke-linecap="round" />
+        <path d="M25 75 L50 50" stroke="currentColor" stroke-width="4" stroke-linecap="round" />
+        <path d="M50 50 L75 50" stroke="currentColor" stroke-width="4" stroke-linecap="round" />
+        <circle cx="25" cy="25" r="8" fill="currentColor" stroke="none" />
+        <circle cx="25" cy="50" r="8" fill="currentColor" stroke="none" />
+        <circle cx="25" cy="75" r="8" fill="currentColor" stroke="none" />
+        <circle cx="50" cy="50" r="10" fill="currentColor" stroke="none" />
+        <circle cx="75" cy="50" r="8" fill="currentColor" stroke="none" />
+      </svg>
+    </div>
+    <!-- Full Logo (Large) -->
+    <div
+      class="hidden lg:flex items-center gap-3 font-bold text-xl tracking-tighter dark:text-white text-black"
+    >
+      <!-- Neural Network Dropout Logo -->
+      <svg width="42" height="42" viewBox="0 0 100 100" fill="none" xmlns="http://www.w3.org/2000/svg" class="shrink-0">
+        <!-- Lines -->
+        <path d="M25 25 L50 50" stroke="currentColor" stroke-width="4" stroke-linecap="round" />
+        <path d="M25 75 L50 50" stroke="currentColor" stroke-width="4" stroke-linecap="round" />
+        <path d="M50 50 L75 50" stroke="currentColor" stroke-width="4" stroke-linecap="round" />
+        
+        <!-- Input Layer (Left) -->
+        <circle cx="25" cy="25" r="8" fill="currentColor" stroke="none" />
+        <circle cx="25" cy="50" r="8" fill="currentColor" stroke="none" />
+        <circle cx="25" cy="75" r="8" fill="currentColor" stroke="none" />
+
+        <!-- Hidden Layer (Middle) - Dropout visualization -->
+        <!-- Dropped units (dashed) -->
+        <circle cx="50" cy="25" r="7" stroke="currentColor" stroke-width="2" stroke-dasharray="4 2" fill="none" class="opacity-30" />
+        <circle cx="50" cy="75" r="7" stroke="currentColor" stroke-width="2" stroke-dasharray="4 2" fill="none" class="opacity-30" />
+        <!-- Active unit -->
+        <circle cx="50" cy="50" r="10" fill="currentColor" stroke="none" />
+
+        <!-- Output Layer (Right) -->
+        <circle cx="75" cy="50" r="8" fill="currentColor" stroke="none" />
+      </svg>
+      
+      <span>DROPOUT</span>
+    </div>
+  </div>
+
+  <!-- Navigation -->
+  <nav class="flex-1 w-full flex flex-col gap-1 px-3">
+    <!-- Nav Item Helper -->
+    {#snippet navItem(view: any, Icon: any, label: string)}
+      <button
+        class="group flex items-center lg:gap-3 justify-center lg:justify-start w-full px-0 lg:px-4 py-2.5 rounded-sm transition-all duration-200 relative
+        {uiState.currentView === view
+          ? 'bg-black/5 dark:bg-white/10 dark:text-white text-black font-medium'
+          : 'dark:text-zinc-400 text-zinc-500 hover:text-black dark:hover:text-white hover:bg-black/5 dark:hover:bg-white/5'}"
+        onclick={() => uiState.setView(view)}
+      >
+        <Icon size={20} strokeWidth={uiState.currentView === view ? 2.5 : 2} />
+        <span class="hidden lg:block text-sm relative z-10">{label}</span>
+        
+        <!-- Active Indicator -->
+        {#if uiState.currentView === view}
+           <div class="absolute left-0 top-1/2 -translate-y-1/2 w-0.5 h-4 bg-black dark:bg-white rounded-r-full hidden lg:block"></div>
+        {/if}
+      </button>
+    {/snippet}
+
+    {@render navItem('home', Home, 'Overview')}
+    {@render navItem('instances', Folder, 'Instances')}
+    {@render navItem('versions', Package, 'Versions')}
+    {@render navItem('guide', Bot, 'Assistant')}
+    {@render navItem('settings', Settings, 'Settings')}
+  </nav>
+
+  <!-- Footer Info -->
+  <div
+    class="p-4 w-full flex justify-center lg:justify-start lg:px-6 opacity-40 hover:opacity-100 transition-opacity"
+  >
+    <div class="text-[10px] font-mono text-zinc-500 uppercase tracking-wider">v{uiState.appVersion}</div>
+  </div>
+</aside>
diff --git a/packages/ui/src/components/StatusToast.svelte b/packages/ui/src/components/StatusToast.svelte
new file mode 100644
index 0000000..4c981c7
--- /dev/null
+++ b/packages/ui/src/components/StatusToast.svelte
@@ -0,0 +1,42 @@
+<script lang="ts">
+  import { uiState } from "../stores/ui.svelte";
+</script>
+
+{#if uiState.status !== "Ready"}
+  {#key uiState.status}
+    <div
+      class="absolute top-12 right-12 bg-white/90 dark:bg-zinc-800/90 backdrop-blur border border-zinc-200 dark:border-zinc-600 p-4 rounded-lg shadow-2xl max-w-sm animate-in fade-in slide-in-from-top-4 duration-300 z-50 group"
+    >
+      <div class="flex justify-between items-start mb-1">
+        <div class="text-xs text-zinc-500 dark:text-zinc-400 uppercase font-bold">Status</div>
+        <button
+          onclick={() => uiState.setStatus("Ready")}
+          class="text-zinc-400 hover:text-black dark:text-zinc-500 dark:hover:text-white transition -mt-1 -mr-1 p-1"
+        >
+          ✕
+        </button>
+      </div>
+      <div class="font-mono text-sm whitespace-pre-wrap mb-2 text-gray-900 dark:text-gray-100">{uiState.status}</div>
+      <div class="w-full bg-gray-200 dark:bg-zinc-700/50 h-1 rounded-full overflow-hidden">
+        <div
+          class="h-full bg-indigo-500 origin-left w-full progress-bar"
+        ></div>
+      </div>
+    </div>
+  {/key}
+{/if}
+
+<style>
+  .progress-bar {
+    animation: progress 5s linear forwards;
+  }
+  
+  @keyframes progress {
+    from {
+      transform: scaleX(1);
+    }
+    to {
+      transform: scaleX(0);
+    }
+  }
+</style>
diff --git a/packages/ui/src/components/VersionsView.svelte b/packages/ui/src/components/VersionsView.svelte
new file mode 100644
index 0000000..f1474d9
--- /dev/null
+++ b/packages/ui/src/components/VersionsView.svelte
@@ -0,0 +1,511 @@
+<script lang="ts">
+  import { invoke } from "@tauri-apps/api/core";
+  import { listen, type UnlistenFn } from "@tauri-apps/api/event";
+  import { gameState } from "../stores/game.svelte";
+  import { instancesState } from "../stores/instances.svelte";
+  import ModLoaderSelector from "./ModLoaderSelector.svelte";
+
+  let searchQuery = $state("");
+  let normalizedQuery = $derived(
+    searchQuery.trim().toLowerCase().replace(/。/g, ".")
+  );
+
+  // Filter by version type
+  let typeFilter = $state<"all" | "release" | "snapshot" | "installed">("all");
+
+  // Installed modded versions with Java version info (Fabric + Forge)
+  let installedFabricVersions = $state<Array<{ id: string; javaVersion?: number }>>([]);
+  let isLoadingModded = $state(false);
+
+  // Load installed modded versions with Java version info (both Fabric and Forge)
+  async function loadInstalledModdedVersions() {
+    if (!instancesState.activeInstanceId) {
+      installedFabricVersions = [];
+      isLoadingModded = false;
+      return;
+    }
+    isLoadingModded = true;
+    try {
+      // Get all installed versions and filter for modded ones (Fabric and Forge)
+      const allInstalled = await invoke<Array<{ id: string; type: string }>>(
+        "list_installed_versions",
+        { instanceId: instancesState.activeInstanceId }
+      );
+      
+      // Filter for Fabric and Forge versions
+      const moddedIds = allInstalled
+        .filter(v => v.type === "fabric" || v.type === "forge")
+        .map(v => v.id);
+      
+      // Load Java version for each installed modded version
+      const versionsWithJava = await Promise.all(
+        moddedIds.map(async (id) => {
+          try {
+            const javaVersion = await invoke<number | null>(
+              "get_version_java_version",
+              {
+                instanceId: instancesState.activeInstanceId!,
+                versionId: id,
+              }
+            );
+            return {
+              id,
+              javaVersion: javaVersion ?? undefined,
+            };
+          } catch (e) {
+            console.error(`Failed to get Java version for ${id}:`, e);
+            return { id, javaVersion: undefined };
+          }
+        })
+      );
+      
+      installedFabricVersions = versionsWithJava;
+    } catch (e) {
+      console.error("Failed to load installed modded versions:", e);
+    } finally {
+      isLoadingModded = false;
+    }
+  }
+
+  let versionDeletedUnlisten: UnlistenFn | null = null;
+  let downloadCompleteUnlisten: UnlistenFn | null = null;
+  let versionInstalledUnlisten: UnlistenFn | null = null;
+  let fabricInstalledUnlisten: UnlistenFn | null = null;
+  let forgeInstalledUnlisten: UnlistenFn | null = null;
+
+  // Load on mount and setup event listeners
+  $effect(() => {
+    loadInstalledModdedVersions();
+    setupEventListeners();
+    return () => {
+      if (versionDeletedUnlisten) {
+        versionDeletedUnlisten();
+      }
+      if (downloadCompleteUnlisten) {
+        downloadCompleteUnlisten();
+      }
+      if (versionInstalledUnlisten) {
+        versionInstalledUnlisten();
+      }
+      if (fabricInstalledUnlisten) {
+        fabricInstalledUnlisten();
+      }
+      if (forgeInstalledUnlisten) {
+        forgeInstalledUnlisten();
+      }
+    };
+  });
+
+  async function setupEventListeners() {
+    // Refresh versions when a version is deleted
+    versionDeletedUnlisten = await listen("version-deleted", async () => {
+      await gameState.loadVersions();
+      await loadInstalledModdedVersions();
+    });
+    
+    // Refresh versions when a download completes (version installed)
+    downloadCompleteUnlisten = await listen("download-complete", async () => {
+      await gameState.loadVersions();
+      await loadInstalledModdedVersions();
+    });
+    
+    // Refresh when a version is installed
+    versionInstalledUnlisten = await listen("version-installed", async () => {
+      await gameState.loadVersions();
+      await loadInstalledModdedVersions();
+    });
+    
+    // Refresh when Fabric is installed
+    fabricInstalledUnlisten = await listen("fabric-installed", async () => {
+      await gameState.loadVersions();
+      await loadInstalledModdedVersions();
+    });
+    
+    // Refresh when Forge is installed
+    forgeInstalledUnlisten = await listen("forge-installed", async () => {
+      await gameState.loadVersions();
+      await loadInstalledModdedVersions();
+    });
+  }
+
+  // Combined versions list (vanilla + modded)
+  let allVersions = $derived(() => {
+    const moddedVersions = installedFabricVersions.map((v) => {
+      // Determine type based on version ID
+      const versionType = v.id.startsWith("fabric-loader-") ? "fabric" : 
+                         v.id.includes("-forge-") ? "forge" : "fabric";
+      return {
+        id: v.id,
+        type: versionType,
+        url: "",
+        time: "",
+        releaseTime: new Date().toISOString(),
+        javaVersion: v.javaVersion,
+        isInstalled: true, // Modded versions in the list are always installed
+      };
+    });
+    return [...moddedVersions, ...gameState.versions];
+  });
+
+  let filteredVersions = $derived(() => {
+    let versions = allVersions();
+
+    // Apply type filter
+    if (typeFilter === "release") {
+      versions = versions.filter((v) => v.type === "release");
+    } else if (typeFilter === "snapshot") {
+      versions = versions.filter((v) => v.type === "snapshot");
+    } else if (typeFilter === "installed") {
+      versions = versions.filter((v) => v.isInstalled === true);
+    }
+
+    // Apply search filter
+    if (normalizedQuery.length > 0) {
+      versions = versions.filter((v) =>
+        v.id.toLowerCase().includes(normalizedQuery)
+      );
+    }
+
+    return versions;
+  });
+
+  function getVersionBadge(type: string) {
+    switch (type) {
+      case "release":
+        return { text: "Release", class: "bg-emerald-100 text-emerald-700 border-emerald-200 dark:bg-emerald-500/20 dark:text-emerald-300 dark:border-emerald-500/30" };
+      case "snapshot":
+        return { text: "Snapshot", class: "bg-amber-100 text-amber-700 border-amber-200 dark:bg-amber-500/20 dark:text-amber-300 dark:border-amber-500/30" };
+      case "fabric":
+        return { text: "Fabric", class: "bg-indigo-100 text-indigo-700 border-indigo-200 dark:bg-indigo-500/20 dark:text-indigo-300 dark:border-indigo-500/30" };
+      case "forge":
+        return { text: "Forge", class: "bg-orange-100 text-orange-700 border-orange-200 dark:bg-orange-500/20 dark:text-orange-300 dark:border-orange-500/30" };
+      case "modpack":
+        return { text: "Modpack", class: "bg-purple-100 text-purple-700 border-purple-200 dark:bg-purple-500/20 dark:text-purple-300 dark:border-purple-500/30" };
+      default:
+        return { text: type, class: "bg-zinc-100 text-zinc-700 border-zinc-200 dark:bg-zinc-500/20 dark:text-zinc-300 dark:border-zinc-500/30" };
+    }
+  }
+
+  function handleModLoaderInstall(versionId: string) {
+    // Refresh the installed versions list
+    loadInstalledModdedVersions();
+    // Refresh vanilla versions to update isInstalled status
+    gameState.loadVersions();
+    // Select the newly installed version
+    gameState.selectedVersion = versionId;
+  }
+
+  // Delete confirmation dialog state
+  let showDeleteDialog = $state(false);
+  let versionToDelete = $state<string | null>(null);
+
+  // Show delete confirmation dialog
+  function showDeleteConfirmation(versionId: string, event: MouseEvent) {
+    event.stopPropagation(); // Prevent version selection
+    versionToDelete = versionId;
+    showDeleteDialog = true;
+  }
+
+  // Cancel delete
+  function cancelDelete() {
+    showDeleteDialog = false;
+    versionToDelete = null;
+  }
+
+  // Confirm and delete version
+  async function confirmDelete() {
+    if (!versionToDelete) return;
+
+    try {
+      await invoke("delete_version", { 
+        instanceId: instancesState.activeInstanceId,
+        versionId: versionToDelete 
+      });
+      // Clear selection if deleted version was selected
+      if (gameState.selectedVersion === versionToDelete) {
+        gameState.selectedVersion = "";
+      }
+      // Close dialog
+      showDeleteDialog = false;
+      versionToDelete = null;
+      // Versions will be refreshed automatically via event listener
+    } catch (e) {
+      console.error("Failed to delete version:", e);
+      alert(`Failed to delete version: ${e}`);
+      // Keep dialog open on error so user can retry
+    }
+  }
+
+  // Version metadata for the selected version
+  interface VersionMetadata {
+    id: string;
+    javaVersion?: number;
+    isInstalled: boolean;
+  }
+
+  let selectedVersionMetadata = $state<VersionMetadata | null>(null);
+  let isLoadingMetadata = $state(false);
+
+  // Load metadata when version is selected
+  async function loadVersionMetadata(versionId: string) {
+    if (!versionId) {
+      selectedVersionMetadata = null;
+      return;
+    }
+
+    isLoadingMetadata = true;
+    try {
+      const metadata = await invoke<VersionMetadata>("get_version_metadata", {
+        instanceId: instancesState.activeInstanceId,
+        versionId,
+      });
+      selectedVersionMetadata = metadata;
+    } catch (e) {
+      console.error("Failed to load version metadata:", e);
+      selectedVersionMetadata = null;
+    } finally {
+      isLoadingMetadata = false;
+    }
+  }
+
+  // Watch for selected version changes
+  $effect(() => {
+    if (gameState.selectedVersion) {
+      loadVersionMetadata(gameState.selectedVersion);
+    } else {
+      selectedVersionMetadata = null;
+    }
+  });
+
+  // Get the base Minecraft version from selected version (for mod loader selector)
+  let selectedBaseVersion = $derived(() => {
+    const selected = gameState.selectedVersion;
+    if (!selected) return "";
+
+    // If it's a modded version, extract the base version
+    if (selected.startsWith("fabric-loader-")) {
+      // Format: fabric-loader-X.X.X-1.20.4
+      const parts = selected.split("-");
+      return parts[parts.length - 1];
+    }
+    if (selected.includes("-forge-")) {
+      // Format: 1.20.4-forge-49.0.38
+      return selected.split("-forge-")[0];
+    }
+
+    // Check if it's a valid vanilla version
+    const version = gameState.versions.find((v) => v.id === selected);
+    return version ? selected : "";
+  });
+</script>
+
+<div class="h-full flex flex-col p-6 overflow-hidden">
+  <div class="flex items-center justify-between mb-6">
+     <h2 class="text-3xl font-black bg-clip-text text-transparent bg-gradient-to-r from-gray-900 to-gray-600 dark:from-white dark:to-white/60">Version Manager</h2>
+     <div class="text-sm dark:text-white/40 text-black/50">Select a version to play or modify</div>
+  </div>
+
+  <div class="flex-1 grid grid-cols-1 lg:grid-cols-3 gap-6 overflow-hidden">
+    <!-- Left: Version List -->
+    <div class="lg:col-span-2 flex flex-col gap-4 overflow-hidden">
+      <!-- Search and Filters (Glass Bar) -->
+      <div class="flex gap-3">
+        <div class="relative flex-1">
+            <span class="absolute left-3 top-1/2 -translate-y-1/2 dark:text-white/30 text-black/30">🔍</span>
+            <input
+              type="text"
+              placeholder="Search versions..."
+              class="w-full pl-9 pr-4 py-3 bg-white/60 dark:bg-black/20 border border-black/10 dark:border-white/10 rounded-xl dark:text-white text-gray-900 placeholder-black/30 dark:placeholder-white/30 focus:outline-none focus:border-indigo-500/50 dark:focus:bg-black/40 focus:bg-white/80 transition-all backdrop-blur-sm"
+              bind:value={searchQuery}
+            />
+        </div>
+      </div>
+
+      <!-- Type Filter Tabs (Glass Caps) -->
+      <div class="flex p-1 bg-white/60 dark:bg-black/20 rounded-xl border border-black/5 dark:border-white/5">
+        {#each ['all', 'release', 'snapshot', 'installed'] as filter}
+            <button
+            class="flex-1 px-3 py-2 rounded-lg text-sm font-medium transition-all duration-200 capitalize
+            {typeFilter === filter
+                ? 'bg-white shadow-sm border border-black/5 dark:bg-white/10 dark:text-white dark:shadow-lg dark:border-white/10 text-black'
+                : 'text-black/40 dark:text-white/40 hover:text-black dark:hover:text-white hover:bg-black/5 dark:hover:bg-white/5'}"
+            onclick={() => (typeFilter = filter as any)}
+            >
+            {filter}
+            </button>
+        {/each}
+      </div>
+
+      <!-- Version List SCROLL -->
+      <div class="flex-1 overflow-y-auto pr-2 space-y-2 custom-scrollbar">
+        {#if gameState.versions.length === 0}
+          <div class="flex items-center justify-center h-40 dark:text-white/30 text-black/30 italic animate-pulse">
+             Fetching manifest...
+          </div>
+        {:else if filteredVersions().length === 0}
+          <div class="flex flex-col items-center justify-center h-40 dark:text-white/30 text-black/30 gap-2">
+             <span class="text-2xl">👻</span>
+             <span>No matching versions found</span>
+          </div>
+        {:else}
+          {#each filteredVersions() as version}
+            {@const badge = getVersionBadge(version.type)}
+            {@const isSelected = gameState.selectedVersion === version.id}
+            <button
+              class="w-full group flex items-center justify-between p-4 rounded-xl text-left border transition-all duration-200 relative overflow-hidden
+              {isSelected
+                ? 'bg-indigo-50 border-indigo-200 dark:bg-indigo-600/20 dark:border-indigo-500/50 shadow-[0_0_20px_rgba(99,102,241,0.2)]'
+                : 'bg-white/40 dark:bg-white/5 border-black/5 dark:border-white/5 hover:bg-white/60 dark:hover:bg-white/10 hover:border-black/10 dark:hover:border-white/10 hover:translate-x-1'}"
+              onclick={() => (gameState.selectedVersion = version.id)}
+            >
+              <!-- Selection Glow -->
+              {#if isSelected}
+                 <div class="absolute inset-0 bg-gradient-to-r from-indigo-500/10 to-transparent pointer-events-none"></div>
+              {/if}
+
+              <div class="relative z-10 flex items-center gap-4 flex-1">
+                <span
+                  class="px-2.5 py-0.5 rounded-full text-[10px] font-bold uppercase tracking-wide border {badge.class}"
+                >
+                  {badge.text}
+                </span>
+                <div class="flex-1">
+                  <div class="font-bold font-mono text-lg tracking-tight {isSelected ? 'text-black dark:text-white' : 'text-gray-700 dark:text-zinc-300 group-hover:text-black dark:group-hover:text-white'}">
+                    {version.id}
+                  </div>
+                  <div class="flex items-center gap-2 mt-0.5">
+                    {#if version.releaseTime && version.type !== "fabric" && version.type !== "forge"}
+                      <div class="text-xs dark:text-white/30 text-black/30">
+                        {new Date(version.releaseTime).toLocaleDateString()}
+                      </div>
+                    {/if}
+                    {#if version.javaVersion}
+                      <div class="flex items-center gap-1 text-xs dark:text-white/40 text-black/40">
+                        <span class="opacity-60">☕</span>
+                        <span class="font-medium">Java {version.javaVersion}</span>
+                      </div>
+                    {/if}
+                  </div>
+                </div>
+              </div>
+              
+              <div class="relative z-10 flex items-center gap-2">
+                {#if version.isInstalled === true}
+                  <button
+                    onclick={(e) => showDeleteConfirmation(version.id, e)}
+                    class="p-2 rounded-lg text-red-500 dark:text-red-400 hover:bg-red-500/10 dark:hover:bg-red-500/20 transition-colors opacity-0 group-hover:opacity-100"
+                    title="Delete version"
+                  >
+                    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                      <path d="M3 6h18"></path>
+                      <path d="M19 6v14c0 1-1 2-2 2H7c-1 0-2-1-2-2V6"></path>
+                      <path d="M8 6V4c0-1 1-2 2-2h4c1 0 2 1 2 2v2"></path>
+                    </svg>
+                  </button>
+                {/if}
+                {#if isSelected}
+                  <div class="text-indigo-500 dark:text-indigo-400">
+                     <span class="text-lg">Selected</span>
+                  </div>
+                {/if}
+              </div>
+            </button>
+          {/each}
+        {/if}
+      </div>
+    </div>
+
+    <!-- Right: Mod Loader Panel -->
+    <div class="flex flex-col gap-4">
+      <!-- Selected Version Info Card -->
+      <div class="bg-gradient-to-br from-white/40 to-white/20 dark:from-white/10 dark:to-white/5 p-6 rounded-2xl border border-black/5 dark:border-white/10 backdrop-blur-md relative overflow-hidden group">
+          <div class="absolute top-0 right-0 p-8 bg-indigo-500/20 blur-[60px] rounded-full group-hover:bg-indigo-500/30 transition-colors"></div>
+          
+          <h3 class="text-xs font-bold uppercase tracking-widest dark:text-white/40 text-black/40 mb-2 relative z-10">Current Selection</h3>
+          {#if gameState.selectedVersion}
+            <p class="font-mono text-3xl font-black text-transparent bg-clip-text bg-gradient-to-r from-gray-900 to-gray-600 dark:from-white dark:to-white/70 relative z-10 truncate mb-4">
+                {gameState.selectedVersion}
+            </p>
+
+            <!-- Version Metadata -->
+            {#if isLoadingMetadata}
+              <div class="space-y-3 relative z-10">
+                <div class="animate-pulse space-y-2">
+                  <div class="h-4 bg-black/10 dark:bg-white/10 rounded w-3/4"></div>
+                  <div class="h-4 bg-black/10 dark:bg-white/10 rounded w-1/2"></div>
+                </div>
+              </div>
+            {:else if selectedVersionMetadata}
+              <div class="space-y-3 relative z-10">
+                <!-- Java Version -->
+                {#if selectedVersionMetadata.javaVersion}
+                  <div>
+                    <div class="text-[10px] font-bold uppercase tracking-wider dark:text-white/40 text-black/40 mb-1">Java Version</div>
+                    <div class="flex items-center gap-2">
+                      <span class="text-lg opacity-60">☕</span>
+                      <span class="text-sm dark:text-white text-black font-medium">
+                        Java {selectedVersionMetadata.javaVersion}
+                      </span>
+                    </div>
+                  </div>
+                {/if}
+
+                <!-- Installation Status -->
+                <div>
+                  <div class="text-[10px] font-bold uppercase tracking-wider dark:text-white/40 text-black/40 mb-1">Status</div>
+                  <div class="flex items-center gap-2">
+                    {#if selectedVersionMetadata.isInstalled === true}
+                      <span class="px-2 py-0.5 bg-emerald-500/20 text-emerald-600 dark:text-emerald-400 text-[10px] font-bold rounded border border-emerald-500/30">
+                        Installed
+                      </span>
+                    {:else if selectedVersionMetadata.isInstalled === false}
+                      <span class="px-2 py-0.5 bg-zinc-500/20 text-zinc-600 dark:text-zinc-400 text-[10px] font-bold rounded border border-zinc-500/30">
+                        Not Installed
+                      </span>
+                    {/if}
+                  </div>
+                </div>
+              </div>
+            {/if}
+          {:else}
+            <p class="dark:text-white/20 text-black/20 italic relative z-10">None selected</p>
+          {/if}
+      </div>
+
+      <!-- Mod Loader Selector Card -->
+      <div class="bg-white/60 dark:bg-black/20 p-4 rounded-2xl border border-black/5 dark:border-white/5 backdrop-blur-sm flex-1 flex flex-col">
+          <ModLoaderSelector
+            selectedGameVersion={selectedBaseVersion()}
+            onInstall={handleModLoaderInstall}
+          />
+      </div>
+
+    </div>
+  </div>
+
+  <!-- Delete Version Confirmation Dialog -->
+  {#if showDeleteDialog && versionToDelete}
+    <div class="fixed inset-0 z-[200] bg-black/70 dark:bg-black/80 backdrop-blur-sm flex items-center justify-center p-4">
+      <div class="bg-white dark:bg-zinc-900 border border-zinc-200 dark:border-zinc-700 rounded-xl shadow-2xl p-6 max-w-sm w-full animate-in fade-in zoom-in-95 duration-200">
+        <h3 class="text-lg font-bold text-gray-900 dark:text-white mb-2">Delete Version</h3>
+        <p class="text-zinc-600 dark:text-zinc-400 text-sm mb-6">
+          Are you sure you want to delete version <span class="text-gray-900 dark:text-white font-mono font-medium">{versionToDelete}</span>? This action cannot be undone.
+        </p>
+        <div class="flex gap-3 justify-end">
+          <button
+            onclick={cancelDelete}
+            class="px-4 py-2 text-sm font-medium text-zinc-600 dark:text-zinc-300 hover:text-zinc-900 dark:hover:text-white bg-zinc-100 dark:bg-zinc-800 hover:bg-zinc-200 dark:hover:bg-zinc-700 rounded-lg transition-colors"
+          >
+            Cancel
+          </button>
+          <button
+            onclick={confirmDelete}
+            class="px-4 py-2 text-sm font-medium text-white bg-red-600 hover:bg-red-500 rounded-lg transition-colors"
+          >
+            Delete
+          </button>
+        </div>
+      </div>
+    </div>
+  {/if}
+</div>