ci: convert integration test to multi-cycle benchmarking tool

Update .gitea/workflows/t.yaml to perform four sequential test cycles:
   1. Baseline (original state)
   2. After cherry-picking 572e3311 (CP1)
   3. After cherry-picking 8fa732e6 (CP1 + CP2)
   4. After discarding previous CPs and cherry-picking 58f410be

   Each cycle runs test_005_any_maintainer_approval_sufficient 30 times
   to gather pass/fail statistics for performance and stability comparison.

.gitea/workflows/t.yaml

@@ -30,31 +30,167 @@ jobs:
           git fetch origin ${{ gitea.ref }}
           git checkout FETCH_HEAD
         working-directory: ./autogits
-      - name: Prepare binaries
+      - name: Prepare binaries (baseline)
         run: make build
         working-directory: ./autogits
-      - name: Prepare images
+      - name: Prepare images (baseline)
         run: |
           make build
           podman rmi $(podman images -f "dangling=true" -q)
         working-directory: ./autogits/integration
-      - name: Make sure the pod is down
+      - name: Make sure the pod is down (1)
         run: make down
         working-directory: ./autogits/integration
-      - name: Start images
+      - name: Start images (baseline)
         run: |
           make up
           make wait_healthy
           podman ps
           sleep 5
         working-directory: ./autogits/integration
-      - name: Run tests
-        run: make pytest
+      - name: Run tests 30 times (baseline)
+        run: |
+          pass=0
+          fail=0
+          for i in $(seq 1 30); do
+            echo "Iteration $i/30..."
+            if podman exec -t tester pytest -v tests/workflow_pr_review_test.py::test_005_any_maintainer_approval_sufficient; then
+              pass=$((pass + 1))
+            else
+              fail=$((fail + 1))
+            fi
+          done
+          echo "Summary (baseline): $pass passes, $fail failures"
         working-directory: ./autogits/integration
-      - name: Make sure the pod is down
+      - name: Make sure the pod is down (2)
+        run: |
+          podman ps
+          make down
+        working-directory: ./autogits/integration
+      - name: Cherry-pick 1
+        run: |
+          git config user.email "bot@example.com"
+          git config user.name "Bot"
+          git cherry-pick 572e33111bd72518f33ec4f7c93a7222282f43999afafac948e1e3da5c3453a0
+        working-directory: ./autogits
+      - name: Prepare binaries (after CP1)
+        run: make build
+        working-directory: ./autogits
+      - name: Prepare images (after CP1)
+        run: |
+          make build
+          podman rmi $(podman images -f "dangling=true" -q)
+        working-directory: ./autogits/integration
+      - name: Make sure the pod is down (3)
+        run: make down
+        working-directory: ./autogits/integration
+      - name: Start images (after CP1)
+        run: |
+          make up
+          make wait_healthy
+          podman ps
+          sleep 5
+        working-directory: ./autogits/integration
+      - name: Run tests 30 times (after CP1)
+        run: |
+          pass=0
+          fail=0
+          for i in $(seq 1 30); do
+            echo "Iteration $i/30..."
+            if podman exec -t tester pytest -v tests/workflow_pr_review_test.py::test_005_any_maintainer_approval_sufficient; then
+              pass=$((pass + 1))
+            else
+              fail=$((fail + 1))
+            fi
+          done
+          echo "Summary (after CP1): $pass passes, $fail failures"
+        working-directory: ./autogits/integration
+      - name: Make sure the pod is down (4)
+        run: |
+          podman ps
+          make down
+        working-directory: ./autogits/integration
+      - name: Cherry-pick 2
+        run: |
+          git cherry-pick 8fa732e67518769c9a962e6d12c2e70b38f7bc06e26332fb007ac666fa5e38c1
+        working-directory: ./autogits
+      - name: Prepare binaries (after CP2)
+        run: make build
+        working-directory: ./autogits
+      - name: Prepare images (after CP2)
+        run: |
+          make build
+          podman rmi $(podman images -f "dangling=true" -q)
+        working-directory: ./autogits/integration
+      - name: Make sure the pod is down (5)
+        run: make down
+        working-directory: ./autogits/integration
+      - name: Start images (after CP2)
+        run: |
+          make up
+          make wait_healthy
+          podman ps
+          sleep 5
+        working-directory: ./autogits/integration
+      - name: Run tests 30 times (after CP2)
+        run: |
+          pass=0
+          fail=0
+          for i in $(seq 1 30); do
+            echo "Iteration $i/30..."
+            if podman exec -t tester pytest -v tests/workflow_pr_review_test.py::test_005_any_maintainer_approval_sufficient; then
+              pass=$((pass + 1))
+            else
+              fail=$((fail + 1))
+            fi
+          done
+          echo "Summary (after CP2): $pass passes, $fail failures"
+        working-directory: ./autogits/integration
+      - name: Make sure the pod is down (6)
+        run: |
+          podman ps
+          make down
+        working-directory: ./autogits/integration
+      - name: Discard and Cherry-pick 3
+        run: |
+          git reset --hard FETCH_HEAD
+          git cherry-pick 58f410befce4da40f3ebc27e21ac81a55b6425dd4214e08eb59359d54322a29d
+        working-directory: ./autogits
+      - name: Prepare binaries (after CP3)
+        run: make build
+        working-directory: ./autogits
+      - name: Prepare images (after CP3)
+        run: |
+          make build
+          podman rmi $(podman images -f "dangling=true" -q)
+        working-directory: ./autogits/integration
+      - name: Make sure the pod is down (7)
+        run: make down
+        working-directory: ./autogits/integration
+      - name: Start images (after CP3)
+        run: |
+          make up
+          make wait_healthy
+          podman ps
+          sleep 5
+        working-directory: ./autogits/integration
+      - name: Run tests 30 times (after CP3)
+        run: |
+          pass=0
+          fail=0
+          for i in $(seq 1 30); do
+            echo "Iteration $i/30..."
+            if podman exec -t tester pytest -v tests/workflow_pr_review_test.py::test_005_any_maintainer_approval_sufficient; then
+              pass=$((pass + 1))
+            else
+              fail=$((fail + 1))
+            fi
+          done
+          echo "Summary (after CP3): $pass passes, $fail failures"
+        working-directory: ./autogits/integration
+      - name: Final cleanup
         if: always()
         run: |
           podman ps
           make down
         working-directory: ./autogits/integration
-