Merge pull request #18 from CMU-17313Q/feat/thread-summarizer

Add Thread Summarizer plugin with tests and documentation
This merge introduces the fully implemented Thread Summarizer feature:
- Adds /api/thread-summarizer/v2/:tid REST API route
- Integrates OpenAI (gpt-4o-mini) for thread summarization
- Includes LRU caching and per-user cooldown
- Provides automated Mocha tests (~80% coverage)
- Adds UserGuide.md with usage and testing documentation

Author: skkuwari-alt

.docker/build/.gitkeep

@@ -0,0 +1,33 @@
+name: CI
+on:
+  push:
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: 'npm'
+
+      - name: Install
+        run: npm ci
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Test (with coverage)
+        run: npm test
+
+      # Make Coveralls non-blocking and only run if a token exists
+      - name: Upload coverage to Coveralls (non-blocking)
+        if: ${{ secrets.COVERALLS_REPO_TOKEN != '' && always() }}
+        uses: coverallsapp/github-action@v2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: ./coverage/lcov.info
+        continue-on-error: true

.docker/config/.gitkeep

@@ -68,12 +68,18 @@ coverage
 test/files/normalise.jpg.png
 test/files/normalise-resized.jpg
 package-lock.json
-/package.json
+#/package.json
 *.mongodb
 link-plugins.sh
 test.sh
 
 .docker/**
 !**/.gitkeep
 
-/test/
+#/test/
+# build outputs
+build/
+dump*.rdb
+
+.nyc_tmp/
+.nyc_cov/