chore: Add CI (#151)

* Add GitHub CI workflow for lint, test, and build

Runs on push to main and PRs. Uses Bun with dependency caching.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Remove branch filter on push trigger to run CI on all branches

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Use bun test in CI test job

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: Matthew Breedlove <sirmalloc@gmail.com>

.github/workflows/ci.yml

@@ -0,0 +1,43 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint:
+    name: Lint & Type Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v2
+        with:
+          cache: true
+      - run: bun install
+      - run: bun tsc --noEmit
+      - run: bunx eslint . --config eslint.config.js --max-warnings=999999
+
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v2
+        with:
+          cache: true
+      - run: bun install
+      - run: bun test
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    needs: [lint, test]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v2
+        with:
+          cache: true
+      - run: bun install
+      - run: bun run build
+      - run: test -f dist/ccstatusline.js