ci: 👷 move CI to Bun

.github/workflows/node.js.yaml → .github/workflows/bun.yaml

-name: Node.js CI
+name: Bun CI
 on:
   push:
     branches: ['main']
   pull_request:
 jobs:
   build:
-    name: 'Fmt, Lint, & Build'
+    name: 'Format & Build' # Format, Lint, & Build
     env:
       PUBLIC_API_BASE_URL: ''
     runs-on: ubuntu-latest
@@ -14,14 +14,14 @@ jobs:
         node-version:
           - latest
     steps:
-      - uses: actions/checkout@v3
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
-        with:
-          node-version: ${{ matrix.node-version }}
-      - run: node --version
-      - run: npm clean-install
-      - run: npm run fmt
-        #- run: npm run lint
-        #- run: npm run lint:types
-      - run: npm run build
+      - uses: actions/checkout@v4
+      - name: Use Bun
+        uses: oven-sh/setup-bun@v1
+      - run: bun --version
+      - run: bun install --frozen-lockfile
+      # - run: bun run lint
+      # - run: bun run lint:backend
+      # - run: bun run lint:types
+      - run: bun run format
+      - run: bun run format:backend
+      - run: bun run build