ci: run perf asserts in CI (backend quality & benchmark jobs)

.github/workflows/benchmark.yml

@@ -50,3 +50,14 @@ jobs:
           fail-on-alert: false
           # Enable Job Summary for PRs
           summary-always: true
+
+      - name: Run Perf Asserts
+        working-directory: backend
+        env:
+          PERF_MAX_MS_GETSTATUS_P95: 500ms
+          PERF_MAX_MS_GETSTATUS_P95_PARALLEL: 1500ms
+          PERF_MAX_MS_LISTDECISIONS_P95: 2000ms
+        run: |
+          echo "## 🔍 Running performance assertions (TestPerf)" >> $GITHUB_STEP_SUMMARY
+          go test -run TestPerf -v ./internal/api/handlers -count=1 | tee perf-output.txt
+          exit ${PIPESTATUS[0]}