test: init e2e (#34193)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.github/workflows/main-ci.yml

@@ -42,6 +42,7 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       api-changed: ${{ steps.changes.outputs.api }}
+      e2e-changed: ${{ steps.changes.outputs.e2e }}
       web-changed: ${{ steps.changes.outputs.web }}
       vdb-changed: ${{ steps.changes.outputs.vdb }}
       migration-changed: ${{ steps.changes.outputs.migration }}
@@ -59,6 +60,16 @@ jobs:
               - 'web/**'
               - '.github/workflows/web-tests.yml'
               - '.github/actions/setup-web/**'
+            e2e:
+              - 'api/**'
+              - 'api/pyproject.toml'
+              - 'api/uv.lock'
+              - 'e2e/**'
+              - 'web/**'
+              - 'docker/docker-compose.middleware.yaml'
+              - 'docker/middleware.env.example'
+              - '.github/workflows/web-e2e.yml'
+              - '.github/actions/setup-web/**'
             vdb:
               - 'api/core/rag/datasource/**'
               - 'docker/**'
@@ -190,6 +201,65 @@ jobs:
           echo "Web tests were not required, but the skip job finished with result: $SKIP_RESULT" >&2
           exit 1
 
+  web-e2e-run:
+    name: Run Web Full-Stack E2E
+    needs:
+      - pre_job
+      - check-changes
+    if: needs.pre_job.outputs.should_skip != 'true' && needs.check-changes.outputs.e2e-changed == 'true'
+    uses: ./.github/workflows/web-e2e.yml
+
+  web-e2e-skip:
+    name: Skip Web Full-Stack E2E
+    needs:
+      - pre_job
+      - check-changes
+    if: needs.pre_job.outputs.should_skip != 'true' && needs.check-changes.outputs.e2e-changed != 'true'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Report skipped web full-stack e2e
+        run: echo "No E2E-related changes detected; skipping web full-stack E2E."
+
+  web-e2e:
+    name: Web Full-Stack E2E
+    if: ${{ always() }}
+    needs:
+      - pre_job
+      - check-changes
+      - web-e2e-run
+      - web-e2e-skip
+    runs-on: ubuntu-latest
+    steps:
+      - name: Finalize Web Full-Stack E2E status
+        env:
+          SHOULD_SKIP_WORKFLOW: ${{ needs.pre_job.outputs.should_skip }}
+          TESTS_CHANGED: ${{ needs.check-changes.outputs.e2e-changed }}
+          RUN_RESULT: ${{ needs.web-e2e-run.result }}
+          SKIP_RESULT: ${{ needs.web-e2e-skip.result }}
+        run: |
+          if [[ "$SHOULD_SKIP_WORKFLOW" == 'true' ]]; then
+            echo "Web full-stack E2E was skipped because this workflow run duplicated a successful or newer run."
+            exit 0
+          fi
+
+          if [[ "$TESTS_CHANGED" == 'true' ]]; then
+            if [[ "$RUN_RESULT" == 'success' ]]; then
+              echo "Web full-stack E2E ran successfully."
+              exit 0
+            fi
+
+            echo "Web full-stack E2E was required but finished with result: $RUN_RESULT" >&2
+            exit 1
+          fi
+
+          if [[ "$SKIP_RESULT" == 'success' ]]; then
+            echo "Web full-stack E2E was skipped because no E2E-related files changed."
+            exit 0
+          fi
+
+          echo "Web full-stack E2E was not required, but the skip job finished with result: $SKIP_RESULT" >&2
+          exit 1
+
   style-check:
     name: Style Check
     needs: pre_job