ci: add Forgejo Actions test workflow with Postgres service

.forgejo/workflows/test.yml

@@ -0,0 +1,73 @@
+name: test
+
+on:
+  push:
+    branches: [dev]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    services:
+      postgres:
+        image: postgres:16-alpine
+        env:
+          POSTGRES_USER: minstrel
+          POSTGRES_PASSWORD: minstrel
+          POSTGRES_DB: minstrel_test
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd "pg_isready -U minstrel"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 10
+
+    env:
+      MINSTREL_TEST_DATABASE_URL: postgres://minstrel:minstrel@localhost:5432/minstrel_test?sslmode=disable
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Detect Go project
+        id: gomod
+        shell: bash
+        run: |
+          if [ -f go.mod ]; then
+            echo "present=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "present=false" >> "$GITHUB_OUTPUT"
+            echo "::notice::No go.mod yet — Go steps will be skipped until the skeleton lands"
+          fi
+
+      - name: Set up Go
+        if: steps.gomod.outputs.present == 'true'
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: go vet
+        if: steps.gomod.outputs.present == 'true'
+        run: go vet ./...
+
+      - name: golangci-lint
+        if: steps.gomod.outputs.present == 'true'
+        uses: golangci/golangci-lint-action@v6
+        with:
+          version: latest
+
+      - name: go test (race + coverage)
+        if: steps.gomod.outputs.present == 'true'
+        run: go test -race -coverprofile=coverage.out ./...
+
+      - name: Upload coverage artifact
+        if: steps.gomod.outputs.present == 'true'
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage
+          path: coverage.out
+          if-no-files-found: ignore