chore: add GitHub issue and PR templates with automation workflows

- Add bilingual issue templates (English & Chinese)
  - Bug report template with prerequisite checkboxes
  - Feature request template
  - Question template
  - Reverse checkbox detection ("I have not read carefully")

- Add bilingual PR templates (English & Chinese)
  - Comprehensive checklist for code quality and testing
  - Test environment documentation section
  - Breaking changes section

- Add GitHub Actions workflows
  - Auto-labeling based on issue content
  - Auto-close issues with unchecked prerequisites
  - Stale issue and PR management (90/60 days)

- Add template configuration
  - External links for discussions and wiki
  - Template chooser interface

3 files changed, 280 insertions, 0 deletions

diff --git a/.github/workflows/issue-checkbox-checker.yml b/.github/workflows/issue-checkbox-checker.yml
new file mode 100644
index 0000000..ce7e011
--- /dev/null
+++ b/.github/workflows/issue-checkbox-checker.yml
@@ -0,0 +1,104 @@
+name: Issue Checkbox Checker
+
+on:
+  issues:
+    types: [opened, edited]
+
+permissions:
+  issues: write
+
+jobs:
+  check-checkboxes:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check for unchecked prerequisites
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const issue = context.payload.issue;
+            if (!issue) return;
+            
+            const body = issue.body || '';
+            
+            // Check if "I have not read carefully" checkbox is checked
+            const notReadPatterns = [
+              /- \[[xX]\] I have not read carefully/,
+              /- \[[xX]\] 我未仔细阅读/
+            ];
+            
+            const hasNotReadChecked = notReadPatterns.some(pattern => pattern.test(body));
+            
+            if (hasNotReadChecked) {
+              const closeMessage = [
+                '## Issue Automatically Closed / Issue 已自动关闭',
+                '',
+                '**English:**',
+                'This issue has been automatically closed because you checked "I have not read carefully."',
+                '',
+                'Please:',
+                '1. Read the [README](https://github.com/' + context.repo.owner + '/' + context.repo.repo + '/blob/main/README.md) and documentation carefully',
+                '2. Search for existing issues',
+                '3. Fill out the issue template completely',
+                '4. Submit a new issue when ready',
+                '',
+                '**中文:**',
+                '此 Issue 已被自动关闭，因为您勾选了"我未仔细阅读"。',
+                '',
+                '请：',
+                '1. 仔细阅读 [README](https://github.com/' + context.repo.owner + '/' + context.repo.repo + '/blob/main/README.md) 和文档',
+                '2. 搜索现有 Issue',
+                '3. 完整填写 Issue 模板',
+                '4. 准备好后提交新的 Issue',
+                '',
+                '---',
+                '*This is an automated action. If you believe this was done in error, please contact the maintainers.*'
+              ].join('\n');
+              
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: issue.number,
+                body: closeMessage
+              });
+              
+              await github.rest.issues.update({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: issue.number,
+                state: 'closed',
+                state_reason: 'not_planned'
+              });
+              
+              await github.rest.issues.addLabels({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: issue.number,
+                labels: ['invalid', 'auto-closed']
+              });
+              
+              return;
+            }
+            
+            // Count total checkboxes and checked boxes
+            const totalBoxes = (body.match(/- \[[ xX]\]/g) || []).length;
+            const checkedBoxes = (body.match(/- \[[xX]\]/g) || []).length;
+            
+            // If no boxes are checked in prerequisites, add a reminder
+            if (totalBoxes > 0 && checkedBoxes === 0) {
+              const reminderMessage = [
+                '## Reminder / 提醒',
+                '',
+                '**English:**',
+                'Please check the prerequisite boxes in the issue template to confirm you have completed the required steps.',
+                '',
+                '**中文:**',
+                '请勾选 Issue 模板中的前置条件复选框，以确认您已完成必要步骤。'
+              ].join('\n');
+              
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: issue.number,
+                body: reminderMessage
+              });
+            }
diff --git a/.github/workflows/issue-checker.yml b/.github/workflows/issue-checker.yml
new file mode 100644
index 0000000..a598488
--- /dev/null
+++ b/.github/workflows/issue-checker.yml
@@ -0,0 +1,84 @@
+name: Issue Checker
+
+on:
+  issues:
+    types: [opened, edited]
+  pull_request_target:
+    types: [opened, edited]
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check and Label Issues
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const issue = context.payload.issue || context.payload.pull_request;
+            if (!issue) return;
+            
+            const body = issue.body || '';
+            const title = issue.title || '';
+            const isIssue = !!context.payload.issue;
+            const issueNumber = issue.number;
+            
+            // Skip if "I have not read carefully" is checked - handled by issue-checkbox-checker.yml
+            const hasNotReadChecked = 
+              body.includes('- [x] I have not read carefully') ||
+              body.includes('- [X] I have not read carefully') ||
+              body.includes('- [x] 我未仔细阅读') ||
+              body.includes('- [X] 我未仔细阅读');
+            
+            if (hasNotReadChecked) {
+              // Let issue-checkbox-checker handle this
+              return;
+            }
+            
+            const labels = [];
+            
+            // Platform labels
+            if (body.match(/Windows|windows/i)) labels.push('platform: windows');
+            if (body.match(/macOS|macos|Mac/i)) labels.push('platform: macos');
+            if (body.match(/Linux|linux|Ubuntu|Debian|Arch|Fedora/i)) labels.push('platform: linux');
+            
+            // Mod loader labels
+            if (body.match(/Fabric/i)) labels.push('mod-loader: fabric');
+            if (body.match(/Forge/i)) labels.push('mod-loader: forge');
+            
+            // Java related
+            if (body.match(/Java|java|JRE|JDK/i)) labels.push('java');
+            
+            // Authentication issues
+            if (body.match(/login|authentication|Microsoft|Xbox|account/i)) labels.push('authentication');
+            
+            // Download issues
+            if (body.match(/download|downloading|assets|libraries/i)) labels.push('download');
+            
+            // Launch issues
+            if (body.match(/launch|start|won't start|crash|crashed/i)) labels.push('launch');
+            
+            // UI issues
+            if (body.match(/UI|interface|display|rendering|visual/i)) labels.push('ui');
+            
+            // Performance issues
+            if (body.match(/slow|performance|lag|freeze|hang/i)) labels.push('performance');
+            
+            // Check for unclear titles
+            if (isIssue && (title.length < 10 ||
+                title.match(/^(help|问题|stuck|卡住|error|错误|bug)$/i))) {
+              labels.push('needs-clarification');
+            }
+            
+            // Apply labels
+            if (labels.length > 0) {
+              await github.rest.issues.addLabels({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: issue.number,
+                labels: labels
+              });
+            }
diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
new file mode 100644
index 0000000..4005b2c
--- /dev/null
+++ b/.github/workflows/stale.yml
@@ -0,0 +1,92 @@
+name: 'Close stale issues'
+
+on:
+  schedule:
+    - cron: '0 0 * * *' # Run daily at midnight UTC
+  workflow_dispatch:
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          # Issues
+          days-before-issue-stale: 90
+          days-before-issue-close: 7
+          stale-issue-label: 'stale'
+          exempt-issue-labels: 'pinned,enhancement,documentation'
+          stale-issue-message: |
+            ## This issue has been automatically marked as stale
+            ## 此 Issue 已被自动标记为过期
+            
+            **English:**
+            This issue has had no activity for 90 days and will be closed in 7 days if no further activity occurs.
+            
+            If this issue is still relevant:
+            - Comment with an update
+            - Provide additional information
+            - Confirm you're still experiencing the problem
+            
+            **中文:**
+            此 Issue 已 90 天无活动，如果继续无活动将在 7 天后关闭。
+            
+            如果此问题仍然相关：
+            - 发表评论更新状态
+            - 提供额外信息
+            - 确认您仍在遇到该问题
+            
+            ---
+            *This is an automated message. To prevent closure, simply comment on this issue.*
+          close-issue-message: |
+            ## This issue has been automatically closed
+            ## 此 Issue 已被自动关闭
+            
+            **English:**
+            This issue was automatically closed due to inactivity. If you're still experiencing this problem, please open a new issue with updated information.
+            
+            **中文:**
+            此 Issue 因无活动而被自动关闭。如果您仍然遇到此问题，请开启一个新的 Issue 并提供最新信息。
+          
+          # Pull Requests
+          days-before-pr-stale: 60
+          days-before-pr-close: 14
+          stale-pr-label: 'stale'
+          exempt-pr-labels: 'pinned,security'
+          stale-pr-message: |
+            ## This pull request has been automatically marked as stale
+            ## 此 PR 已被自动标记为过期
+            
+            **English:**
+            This pull request has had no activity for 60 days and will be closed in 14 days if no further activity occurs.
+            
+            If you're still working on this:
+            - Push new commits
+            - Comment with a status update
+            - Request a review
+            
+            **中文:**
+            此 PR 已 60 天无活动，如果继续无活动将在 14 天后关闭。
+            
+            如果您仍在处理此问题：
+            - 推送新的提交
+            - 发表评论更新状态
+            - 请求审查
+          close-pr-message: |
+            ## This pull request has been automatically closed
+            ## 此 PR 已被自动关闭
+            
+            **English:**
+            This pull request was automatically closed due to inactivity. Feel free to reopen if you resume work on this.
+            
+            **中文:**
+            此 PR 因无活动而被自动关闭。如果您恢复工作，请随时重新开启。
+          
+          # General settings
+          operations-per-run: 100
+          remove-stale-when-updated: true
+          ascending: true