Add VS Code CI checks and VSIX packaging

.github/workflows/vscode-ci.yml

@@ -0,0 +1,62 @@
+name: VS Code CI
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: vscode-ci-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  validate:
+    name: Type-check, corpus, and VSIX
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v7
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v7
+        with:
+          node-version: 22
+          cache: npm
+
+      - name: Set up Java
+        uses: actions/setup-java@v6
+        with:
+          distribution: temurin
+          java-version: '11'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Type-check TypeScript
+        run: npm run check
+
+      - name: Compile extension
+        run: npm run compile
+
+      - name: Compare regression corpus
+        run: npm run test:corpus
+
+      - name: Package VSIX
+        run: npm run package:vsix
+
+      - name: Upload VSIX artifact
+        uses: actions/upload-artifact@v7
+        with:
+          name: test-smell-detector-vsix
+          path: test-smell-detector.vsix
+          if-no-files-found: error
+          retention-days: 14

.vscodeignore

@@ -1,5 +1,10 @@
 .vscode/**
+.github/**
 src/**
+scripts/**
+regression-corpus/**
 .gitignore
 tsconfig.json
+package-lock.json
 **/*.map
+*.vsix

README.md

@@ -44,6 +44,29 @@ If Java is installed under a different executable path, set
 7. Review the detected smells in the **Problems** panel and the detailed run
    summary in the **Test Smell Detector** Output panel.
 
+## Automated checks
+
+The GitHub Actions workflow runs for pull requests targeting `main`, pushes to
+`main`, and manual workflow runs. It installs dependencies with `npm ci`,
+type-checks and compiles the TypeScript extension, compares all regression
+fixtures with their expected tsDetect results, and builds an installable VSIX.
+
+The same checks can be run locally with Node.js 22 or newer and Java 11 or
+newer:
+
+```sh
+npm ci
+npm run check
+npm run compile
+npm run test:corpus
+npm run package:vsix
+```
+
+`npm run test:corpus` expects the compiled adapter in `out/`, so run
+`npm run compile` first. The packaging command creates
+`test-smell-detector.vsix`. In GitHub Actions, that file is retained as the
+`test-smell-detector-vsix` workflow artifact.
+
 ## Prototype limitations
 
 - Analysis runs only when the command is invoked.