ci: add golangci, migration checks, and pre-commit

DEP-03: check-migrations-pair.sh; migrations/* в path filter; golangci-lint в CI; pre-commit; обновление engineering.mdc (TEST-04, enforcement).
Co-authored-by: Cursor <[email protected]>

.gitea/workflows/ci.yaml

@@ -88,6 +88,7 @@ jobs:
               deploy/docker/evobgp-web/*)                  docker_web=true ;;
               deploy/docker/bird2/*)                       docker_bird=true ;;
               go.mod|go.sum|go.work)                       go=true ;;
+              migrations/*)                                go=true ;;
               *.go)                                        go=true ;;
               cmd/*|internal/*)                            go=true ;;
             esac
@@ -157,6 +158,12 @@ jobs:
         run: go vet ./...
       - name: Lint httpapi (ERR-01 / ARCH-01)
         run: sh scripts/lint-httpapi.sh
+      - name: Check migration pairs (DEP-03)
+        run: sh scripts/check-migrations-pair.sh
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v6
+        with:
+          version: v1.62
       - name: Test
         run: go test ./... -race -count=1
       - name: Build all commands