ci(workflows): enhance workflows with matrix builds and caching optimizations

Refactor GitHub Actions workflows to introduce matrix builds for `backend`, `frontend`, and `documentation` components. Upgrade actions versions, add pull request triggers, and improve caching with pnpm store integration. Adjust Node.js version to 20 and enforce `--frozen-lockfile` for dependency installation.

.gitea/workflows/lint.yml

@@ -1,14 +1,23 @@
 name: Lint
+
 on:
   push:
     paths:
       - 'frontend/**'
       - 'backend/**'
       - 'documentation/**'
+  pull_request:
+    paths:
+      - 'frontend/**'
+      - 'backend/**'
+      - 'documentation/**'
 
 jobs:
   lint:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        component: [backend, frontend, documentation]
     steps:
       - uses: actions/checkout@v4
       - uses: pnpm/action-setup@v4
@@ -16,16 +25,19 @@ jobs:
           version: 9
       - uses: actions/setup-node@v4
         with:
-          node-version: 22
-          cache: 'pnpm'
+          node-version: 20
+      - name: Get pnpm store directory
+        id: pnpm-cache
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path --silent)" >> "${GITEA_OUTPUT:-$GITHUB_OUTPUT}"
+      - uses: actions/cache@v4
+        with:
+          path: ${{ steps.pnpm-cache.outputs.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
       - name: Install dependencies
-        run: pnpm install
-      - name: Lint Frontend
-        if: success() || failure()
-        run: pnpm -F @memegoat/frontend lint
-      - name: Lint Backend
-        if: success() || failure()
-        run: pnpm -F @memegoat/backend lint
-      - name: Lint Documentation
-        if: success() || failure()
-        run: pnpm -F @bypass/documentation lint
+        run: pnpm install --frozen-lockfile
+      - name: Lint ${{ matrix.component }}
+        run: pnpm -F @memegoat/${{ matrix.component }} lint