feat: enhance LogsHandler with query parameters for filtering and pagination, and add download functionality

.github/workflows/quality-checks.yml

@@ -21,7 +21,15 @@ jobs:
 
       - name: Run Go tests
         working-directory: backend
-        run: go test -v ./...
+        run: go test -v -coverprofile=coverage.out ./...
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./backend/coverage.out
+          flags: backend
+          fail_ci_if_error: true
 
       - name: Run golangci-lint
         uses: golangci/golangci-lint-action@0a35821d5c230e903fcfe077583637dea1b27b47 # v9.0.0
@@ -50,7 +58,15 @@ jobs:
 
       - name: Run frontend tests
         working-directory: frontend
-        run: npm test
+        run: npm run test:coverage
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          directory: ./frontend/coverage
+          flags: frontend
+          fail_ci_if_error: true
 
       - name: Run frontend lint
         working-directory: frontend