Merge upstream/main into argus (sync 2026-04-28)

Absorbs 54 upstream commits from bytedance/deer-flow#main onto argus.

Conflict resolution:
  - backend/packages/harness/deerflow/models/factory.py — both sides
    edited the lines around model_class instantiation. Upstream added
    MindIE retry config (commit 2bb1a2d) and stream-usage-by-default
    helper (c99865f); ours added per-loop httpx client injection.
    Resolved by keeping all three: MindIE retry runs first (mutating
    model_settings_from_config), then our final_kwargs construction
    plus per-loop client, then model_class(**final_kwargs).

Auto-merges that worked clean:
  - prompt.py — upstream renamed present_file → present_files (5ba1dac)
    and added the dynamic _build_available_subagents_description helper
    (30d619d). Both edit areas are far from our <file_editing> block.
  - factory tests, prompt tests — additive; existing argus tests
    untouched.

Lockfile bumps:
  - lxml 6.0.2 → 6.1.0 (1ca2621). Drops the test_artifacts_router.py
    --ignore in argus-ci.yml that was added with the original CI commit.
  - pytest 9.0.2 → 9.0.3, langsmith 0.6.4 → 0.7.31, python-dotenv
    1.2.1 → 1.2.2. All transparent.
  - pytest-asyncio added to test deps (came in with the MindIE provider).

Local test environment shows 8 failures on the merged tree, all
confirmed as environment artifacts of our pre-baked docker image:

  - test_mindie_provider.py × 6: image lacks pytest-asyncio. GitHub
    Actions installs it fresh from uv.lock and the tests pass.
  - test_artifacts_router.py × 2: image's python:3.12-slim base has no
    /etc/mime.types, so mimetypes.guess_type('.xhtml') returns None.
    Ubuntu runners on GitHub Actions return application/xhtml+xml and
    the test passes.

Verified by manually installing pytest-asyncio + lxml 6.1.0 into the
container — MindIE failures all flip to passing; xhtml failures persist
because they depend on the OS-level mime database.

Author: Nichol4s

.github/workflows/argus-ci.yml

@@ -54,9 +54,4 @@ jobs:
 
       - name: Run unit tests
         working-directory: backend
-        # test_artifacts_router.py expects lxml >= 6.1.0 behavior (xhtml is
-        # classified as active content). Our argus branch is pinned to
-        # upstream 898f4e8a, where uv.lock still has lxml 6.0.2; the bump
-        # to 6.1.0 lives in upstream commit 1ca2621 which we'll absorb on
-        # the first weekly sync. Drop --ignore once that merge lands.
-        run: PYTHONPATH=. uv run pytest tests/ -v --ignore=tests/test_artifacts_router.py
+        run: make test

.github/workflows/e2e-tests.yml

@@ -0,0 +1,63 @@
+name: E2E Tests
+
+on:
+  push:
+    branches: [ 'main' ]
+    paths:
+      - 'frontend/**'
+      - '.github/workflows/e2e-tests.yml'
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
+    paths:
+      - 'frontend/**'
+      - '.github/workflows/e2e-tests.yml'
+
+concurrency:
+  group: e2e-tests-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  e2e-tests:
+    if: ${{ github.event_name != 'pull_request' || github.event.pull_request.draft == false }}
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+
+      - name: Enable Corepack
+        run: corepack enable
+
+      - name: Use pinned pnpm version
+        run: corepack prepare pnpm@10.26.2 --activate
+
+      - name: Install frontend dependencies
+        working-directory: frontend
+        run: pnpm install --frozen-lockfile
+
+      - name: Install Playwright Chromium
+        working-directory: frontend
+        run: npx playwright install chromium --with-deps
+
+      - name: Run E2E tests
+        working-directory: frontend
+        run: pnpm exec playwright test
+        env:
+          SKIP_ENV_VALIDATION: '1'
+
+      - name: Upload Playwright report
+        uses: actions/upload-artifact@v4
+        if: ${{ !cancelled() }}
+        with:
+          name: playwright-report
+          path: frontend/playwright-report/
+          retention-days: 7

.gitignore

@@ -40,6 +40,7 @@ coverage/
 skills/custom/*
 logs/
 log/
+debug.log
 
 # Local git hooks (keep only on this machine, do not push)
 .githooks/
@@ -55,5 +56,7 @@ web/
 backend/Dockerfile.langgraph
 config.yaml.bak
 .playwright-mcp
+/frontend/test-results/
+/frontend/playwright-report/
 .gstack/
 .worktrees

.pre-commit-config.yaml

@@ -0,0 +1,33 @@
+repos:
+  # Backend: ruff lint + format via uv (uses the same ruff version as backend deps)
+  - repo: local
+    hooks:
+      - id: ruff
+        name: ruff lint
+        entry: bash -c 'cd backend && uv run ruff check --fix "${@/#backend\//}"' --
+        language: system
+        types_or: [python]
+        files: ^backend/
+      - id: ruff-format
+        name: ruff format
+        entry: bash -c 'cd backend && uv run ruff format "${@/#backend\//}"' --
+        language: system
+        types_or: [python]
+        files: ^backend/
+
+  # Frontend: eslint + prettier (must run from frontend/ for node_modules resolution)
+  - repo: local
+    hooks:
+      - id: frontend-eslint
+        name: eslint (frontend)
+        entry: bash -c 'cd frontend && npx eslint --fix "${@/#frontend\//}"' --
+        language: system
+        types_or: [javascript, tsx, ts]
+        files: ^frontend/
+
+      - id: frontend-prettier
+        name: prettier (frontend)
+        entry: bash -c 'cd frontend && npx prettier --write "${@/#frontend\//}"' --
+        language: system
+        files: ^frontend/
+        types_or: [javascript, tsx, ts, json, css]

CONTRIBUTING.md

@@ -166,7 +166,7 @@ Required tools:
 
 1. **Configure the application** (same as Docker setup above)
 
-2. **Install dependencies**:
+2. **Install dependencies** (this also sets up pre-commit hooks):
    ```bash
    make install
    ```
@@ -300,9 +300,13 @@ Nginx (port 2026) ← Unified entry point
 cd backend
 make test
 
-# Frontend tests
+# Frontend unit tests
 cd frontend
 make test
+
+# Frontend E2E tests (requires Chromium; builds and auto-starts the Next.js production server)
+cd frontend
+make test-e2e
 ```
 
 ### PR Regression Checks
@@ -311,6 +315,7 @@ Every pull request triggers the following CI workflows:
 
 - **Backend unit tests** — [.github/workflows/backend-unit-tests.yml](.github/workflows/backend-unit-tests.yml)
 - **Frontend unit tests** — [.github/workflows/frontend-unit-tests.yml](.github/workflows/frontend-unit-tests.yml)
+- **Frontend E2E tests** — [.github/workflows/e2e-tests.yml](.github/workflows/e2e-tests.yml) (triggered only when `frontend/` files change)
 
 ## Code Style
 

Makefile

@@ -23,7 +23,7 @@ help:
 	@echo "  make config          - Generate local config files (aborts if config already exists)"
 	@echo "  make config-upgrade  - Merge new fields from config.example.yaml into config.yaml"
 	@echo "  make check           - Check if all required tools are installed"
-	@echo "  make install         - Install all dependencies (frontend + backend)"
+	@echo "  make install         - Install all dependencies (frontend + backend + pre-commit hooks)"
 	@echo "  make setup-sandbox   - Pre-pull sandbox container image (recommended)"
 	@echo "  make dev             - Start all services in development mode (with hot-reloading)"
 	@echo "  make dev-pro         - Start in dev + Gateway mode (experimental, no LangGraph server)"
@@ -73,6 +73,8 @@ install:
 	@cd backend && uv sync
 	@echo "Installing frontend dependencies..."
 	@cd frontend && pnpm install
+	@echo "Installing pre-commit hooks..."
+	@$(BACKEND_UV_RUN) --with pre-commit pre-commit install
 	@echo "✓ All dependencies installed"
 	@echo ""
 	@echo "=========================================="
@@ -99,7 +101,7 @@ setup-sandbox:
 	echo ""; \
 	if command -v container >/dev/null 2>&1 && [ "$$(uname)" = "Darwin" ]; then \
 		echo "Detected Apple Container on macOS, pulling image..."; \
-		container pull "$$IMAGE" || echo "⚠ Apple Container pull failed, will try Docker"; \
+		container image pull "$$IMAGE" || echo "⚠ Apple Container pull failed, will try Docker"; \
 	fi; \
 	if command -v docker >/dev/null 2>&1; then \
 		echo "Pulling image using Docker..."; \

README.md

@@ -264,7 +264,7 @@ On Windows, run the local development flow from Git Bash. Native `cmd.exe` and P
 
 2. **Install dependencies**:
    ```bash
-   make install  # Install backend + frontend dependencies
+   make install  # Install backend + frontend dependencies + pre-commit hooks
    ```
 
 3. **(Optional) Pre-pull sandbox image**:

backend/app/channels/service.py

@@ -23,6 +23,16 @@
     "wecom": "app.channels.wecom:WeComChannel",
 }
 
+# Keys that indicate a user has configured credentials for a channel.
+_CHANNEL_CREDENTIAL_KEYS: dict[str, list[str]] = {
+    "discord": ["bot_token"],
+    "feishu": ["app_id", "app_secret"],
+    "slack": ["bot_token", "app_token"],
+    "telegram": ["bot_token"],
+    "wecom": ["bot_id", "bot_secret"],
+    "wechat": ["bot_token"],
+}
+
 _CHANNELS_LANGGRAPH_URL_ENV = "DEER_FLOW_CHANNELS_LANGGRAPH_URL"
 _CHANNELS_GATEWAY_URL_ENV = "DEER_FLOW_CHANNELS_GATEWAY_URL"
 
@@ -88,7 +98,16 @@ async def start(self) -> None:
             if not isinstance(channel_config, dict):
                 continue
             if not channel_config.get("enabled", False):
-                logger.info("Channel %s is disabled, skipping", name)
+                cred_keys = _CHANNEL_CREDENTIAL_KEYS.get(name, [])
+                has_creds = any(not isinstance(channel_config.get(k), bool) and channel_config.get(k) is not None and str(channel_config[k]).strip() for k in cred_keys)
+                if has_creds:
+                    logger.warning(
+                        "Channel '%s' has credentials configured but is disabled. Set enabled: true under channels.%s in config.yaml to activate it.",
+                        name,
+                        name,
+                    )
+                else:
+                    logger.info("Channel %s is disabled, skipping", name)
                 continue
 
             await self._start_channel(name, channel_config)

backend/app/channels/slack.py

@@ -16,21 +16,39 @@
 _slack_md_converter = SlackMarkdownConverter()
 
 
+def _normalize_allowed_users(allowed_users: Any) -> set[str]:
+    if allowed_users is None:
+        return set()
+    if isinstance(allowed_users, str):
+        values = [allowed_users]
+    elif isinstance(allowed_users, list | tuple | set):
+        values = allowed_users
+    else:
+        logger.warning(
+            "Slack allowed_users should be a list of Slack user IDs or a single Slack user ID string; treating %s as one string value",
+            type(allowed_users).__name__,
+        )
+        values = [allowed_users]
+    return {str(user_id) for user_id in values if str(user_id)}
+
+
 class SlackChannel(Channel):
     """Slack IM channel using Socket Mode (WebSocket, no public IP).
 
     Configuration keys (in ``config.yaml`` under ``channels.slack``):
         - ``bot_token``: Slack Bot User OAuth Token (xoxb-...).
         - ``app_token``: Slack App-Level Token (xapp-...) for Socket Mode.
-        - ``allowed_users``: (optional) List of allowed Slack user IDs. Empty = allow all.
+        - ``allowed_users``: (optional) List of allowed Slack user IDs, or a
+          single Slack user ID string as shorthand. Empty = allow all. Other
+          scalar values are treated as a single string with a warning.
     """
 
     def __init__(self, bus: MessageBus, config: dict[str, Any]) -> None:
         super().__init__(name="slack", bus=bus, config=config)
         self._socket_client = None
         self._web_client = None
         self._loop: asyncio.AbstractEventLoop | None = None
-        self._allowed_users: set[str] = {str(user_id) for user_id in config.get("allowed_users", [])}
+        self._allowed_users = _normalize_allowed_users(config.get("allowed_users", []))
 
     async def start(self) -> None:
         if self._running:

backend/app/gateway/app.py

@@ -1,3 +1,4 @@
+import asyncio
 import logging
 from collections.abc import AsyncGenerator
 from contextlib import asynccontextmanager
@@ -32,6 +33,11 @@
 
 logger = logging.getLogger(__name__)
 
+# Upper bound (seconds) each lifespan shutdown hook is allowed to run.
+# Bounds worker exit time so uvicorn's reload supervisor does not keep
+# firing signals into a worker that is stuck waiting for shutdown cleanup.
+_SHUTDOWN_HOOK_TIMEOUT_SECONDS = 5.0
+
 
 @asynccontextmanager
 async def lifespan(app: FastAPI) -> AsyncGenerator[None, None]:
@@ -63,11 +69,19 @@ async def lifespan(app: FastAPI) -> AsyncGenerator[None, None]:
 
         yield
 
-        # Stop channel service on shutdown
+        # Stop channel service on shutdown (bounded to prevent worker hang)
         try:
             from app.channels.service import stop_channel_service
 
-            await stop_channel_service()
+            await asyncio.wait_for(
+                stop_channel_service(),
+                timeout=_SHUTDOWN_HOOK_TIMEOUT_SECONDS,
+            )
+        except TimeoutError:
+            logger.warning(
+                "Channel service shutdown exceeded %.1fs; proceeding with worker exit.",
+                _SHUTDOWN_HOOK_TIMEOUT_SECONDS,
+            )
         except Exception:
             logger.exception("Failed to stop channel service")