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

1 files changed, 84 insertions, 0 deletions

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
+              });
+            }