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.

1 files changed, 0 insertions, 232 deletions

diff --git a/ui/src/types/index.ts b/ui/src/types/index.ts
deleted file mode 100644
index b4412b8..0000000
--- a/ui/src/types/index.ts
+++ /dev/null
@@ -1,232 +0,0 @@
-export type ViewType = "home" | "versions" | "settings" | "guide" | "instances";
-
-export interface Version {
-  id: string;
-  type: string;
-  url: string;
-  time: string;
-  releaseTime: string;
-  javaVersion?: number; // Java major version requirement (e.g., 8, 17, 21)
-  isInstalled?: boolean; // Whether this version is installed locally
-}
-
-export interface Account {
-  type: "Offline" | "Microsoft";
-  username: string;
-  uuid: string;
-  access_token?: string;
-  refresh_token?: string;
-  expires_at?: number; // Unix timestamp for Microsoft accounts
-}
-
-export interface DeviceCodeResponse {
-  user_code: string;
-  device_code: string;
-  verification_uri: string;
-  expires_in: number;
-  interval: number;
-  message?: string;
-}
-
-export interface AssistantConfig {
-  enabled: boolean;
-  llm_provider: "ollama" | "openai";
-  // Ollama settings
-  ollama_endpoint: string;
-  ollama_model: string;
-  // OpenAI settings
-  openai_api_key?: string;
-  openai_endpoint: string;
-  openai_model: string;
-  // Common settings
-  system_prompt: string;
-  response_language: string;
-  // TTS settings
-  tts_enabled: boolean;
-  tts_provider: string;
-}
-
-export interface ModelInfo {
-  id: string;
-  name: string;
-  size?: string;
-  details?: string;
-}
-
-export interface LauncherConfig {
-  min_memory: number;
-  max_memory: number;
-  java_path: string;
-  width: number;
-  height: number;
-  download_threads: number;
-  custom_background_path?: string;
-  enable_gpu_acceleration: boolean;
-  enable_visual_effects: boolean;
-  active_effect: string;
-  theme: string;
-  log_upload_service: "paste.rs" | "pastebin.com";
-  pastebin_api_key?: string;
-  assistant: AssistantConfig;
-  // Storage management
-  use_shared_caches: boolean;
-  keep_legacy_per_instance_storage: boolean;
-  // Feature-gated argument flags
-  feature_flags: FeatureFlags;
-}
-
-export interface FeatureFlags {
-  demo_user: boolean;
-  quick_play_enabled: boolean;
-  quick_play_path?: string;
-  quick_play_singleplayer: boolean;
-  quick_play_multiplayer_server?: string;
-}
-
-export interface JavaInstallation {
-  path: string;
-  version: string;
-  is_64bit: boolean;
-}
-
-export interface JavaDownloadInfo {
-  version: string;
-  release_name: string;
-  download_url: string;
-  file_name: string;
-  file_size: number;
-  checksum: string | null;
-  image_type: string;
-}
-
-export interface JavaReleaseInfo {
-  major_version: number;
-  image_type: string;
-  version: string;
-  release_name: string;
-  release_date: string | null;
-  file_size: number;
-  checksum: string | null;
-  download_url: string;
-  is_lts: boolean;
-  is_available: boolean;
-  architecture: string;
-}
-
-export interface JavaCatalog {
-  releases: JavaReleaseInfo[];
-  available_major_versions: number[];
-  lts_versions: number[];
-  cached_at: number;
-}
-
-export interface JavaDownloadProgress {
-  file_name: string;
-  downloaded_bytes: number;
-  total_bytes: number;
-  speed_bytes_per_sec: number;
-  eta_seconds: number;
-  status: string;
-  percentage: number;
-}
-
-export interface PendingJavaDownload {
-  major_version: number;
-  image_type: string;
-  download_url: string;
-  file_name: string;
-  file_size: number;
-  checksum: string | null;
-  install_path: string;
-  created_at: number;
-}
-
-export type JavaDownloadSource = "adoptium" | "mojang" | "azul";
-
-// ==================== Fabric Types ====================
-
-export interface FabricGameVersion {
-  version: string;
-  stable: boolean;
-}
-
-export interface FabricLoaderVersion {
-  separator: string;
-  build: number;
-  maven: string;
-  version: string;
-  stable: boolean;
-}
-
-export interface FabricLoaderEntry {
-  loader: FabricLoaderVersion;
-  intermediary: {
-    maven: string;
-    version: string;
-    stable: boolean;
-  };
-  launcherMeta: {
-    version: number;
-    mainClass: {
-      client: string;
-      server: string;
-    };
-  };
-}
-
-export interface InstalledFabricVersion {
-  id: string;
-  minecraft_version: string;
-  loader_version: string;
-  path: string;
-}
-
-// ==================== Forge Types ====================
-
-export interface ForgeVersion {
-  version: string;
-  minecraft_version: string;
-  recommended: boolean;
-  latest: boolean;
-}
-
-export interface InstalledForgeVersion {
-  id: string;
-  minecraft_version: string;
-  forge_version: string;
-  path: string;
-}
-
-// ==================== Mod Loader Type ====================
-
-export type ModLoaderType = "vanilla" | "fabric" | "forge";
-
-// ==================== Instance Types ====================
-
-export interface Instance {
-  id: string;
-  name: string;
-  game_dir: string;
-  version_id?: string;
-  created_at: number;
-  last_played?: number;
-  icon_path?: string;
-  notes?: string;
-  mod_loader?: string;
-  mod_loader_version?: string;
-  jvm_args_override?: string;
-  memory_override?: MemoryOverride;
-}
-
-export interface MemoryOverride {
-  min: number; // MB
-  max: number; // MB
-}
-
-export interface FileInfo {
-  name: string;
-  path: string;
-  is_directory: boolean;
-  size: number;
-  modified: number;
-}