---
name: team-frontend-debug
description: Frontend debugging team using Chrome DevTools MCP. Dual-mode — feature-list testing or bug-report debugging. Triggers on "team-frontend-debug", "frontend debug".
allowed-tools: TeamCreate(*), TeamDelete(*), SendMessage(*), TaskCreate(*), TaskUpdate(*), TaskList(*), TaskGet(*), Agent(*), AskUserQuestion(*), Read(*), Write(*), Edit(*), Bash(*), Glob(*), Grep(*), mcp__ccw-tools__team_msg(*), mcp__chrome-devtools__*(*)
---

# Frontend Debug Team

Dual-mode frontend debugging: feature-list testing or bug-report debugging, powered by Chrome DevTools MCP.

## Architecture

```
Skill(skill="team-frontend-debug", args="feature list or bug description")
                    |
         SKILL.md (this file) = Router
                    |
     +--------------+--------------+
     |                             |
  no --role flag              --role <name>
     |                             |
  Coordinator                  Worker
  roles/coordinator/role.md    roles/<name>/role.md
     |
     +-- analyze input → select pipeline → dispatch → spawn → STOP
                                    |
         ┌──────────────────────────┼──────────────────────┐
         v                         v                       v
    [test-pipeline]          [debug-pipeline]          [shared]
     tester(DevTools)        reproducer(DevTools)      analyzer
                                                       fixer
                                                       verifier
```

## Pipeline Modes

| Input | Pipeline | Flow |
|-------|----------|------|
| Feature list / 功能清单 | `test-pipeline` | TEST → ANALYZE → FIX → VERIFY |
| Bug report / 错误描述 | `debug-pipeline` | REPRODUCE → ANALYZE → FIX → VERIFY |

## Role Registry

| Role | Path | Prefix | Inner Loop |
|------|------|--------|------------|
| coordinator | [roles/coordinator/role.md](roles/coordinator/role.md) | — | — |
| tester | [roles/tester/role.md](roles/tester/role.md) | TEST-* | true |
| reproducer | [roles/reproducer/role.md](roles/reproducer/role.md) | REPRODUCE-* | false |
| analyzer | [roles/analyzer/role.md](roles/analyzer/role.md) | ANALYZE-* | false |
| fixer | [roles/fixer/role.md](roles/fixer/role.md) | FIX-* | true |
| verifier | [roles/verifier/role.md](roles/verifier/role.md) | VERIFY-* | false |

## Role Router

Parse `$ARGUMENTS`:
- Has `--role <name>` → Read `roles/<name>/role.md`, execute Phase 2-4
- No `--role` → `@roles/coordinator/role.md`, execute entry router

## Shared Constants

- **Session prefix**: `TFD`
- **Session path**: `.workflow/.team/TFD-<slug>-<date>/`
- **CLI tools**: `ccw cli --mode analysis` (read-only), `ccw cli --mode write` (modifications)
- **Message bus**: `mcp__ccw-tools__team_msg(session_id=<session-id>, ...)`

## Workspace Resolution

Coordinator MUST resolve paths at Phase 2 before TeamCreate:

1. Run `Bash({ command: "pwd" })` → capture `project_root` (absolute path)
2. `skill_root = <project_root>/.claude/skills/team-frontend-debug`
3. Store in `team-session.json`:
   ```json
   { "project_root": "/abs/path/to/project", "skill_root": "/abs/path/to/skill" }
   ```
4. All worker `role_spec` values MUST use `<skill_root>/roles/<role>/role.md` (absolute)

This ensures workers spawned with `run_in_background: true` always receive an absolute, resolvable path regardless of their working directory.

## Chrome DevTools MCP Tools

All browser inspection operations use Chrome DevTools MCP. Reproducer and Verifier are primary consumers.

| Tool | Purpose |
|------|---------|
| `mcp__chrome-devtools__navigate_page` | Navigate to target URL |
| `mcp__chrome-devtools__take_screenshot` | Capture visual state |
| `mcp__chrome-devtools__take_snapshot` | Capture DOM/a11y tree |
| `mcp__chrome-devtools__list_console_messages` | Read console logs |
| `mcp__chrome-devtools__get_console_message` | Get specific console message |
| `mcp__chrome-devtools__list_network_requests` | Monitor network activity |
| `mcp__chrome-devtools__get_network_request` | Inspect request/response detail |
| `mcp__chrome-devtools__performance_start_trace` | Start performance recording |
| `mcp__chrome-devtools__performance_stop_trace` | Stop and analyze trace |
| `mcp__chrome-devtools__click` | Simulate user click |
| `mcp__chrome-devtools__fill` | Fill form inputs |
| `mcp__chrome-devtools__hover` | Hover over elements |
| `mcp__chrome-devtools__evaluate_script` | Execute JavaScript in page |
| `mcp__chrome-devtools__wait_for` | Wait for element/text |
| `mcp__chrome-devtools__list_pages` | List open browser tabs |
| `mcp__chrome-devtools__select_page` | Switch active tab |

## Worker Spawn Template

Coordinator spawns workers using this template:

```
Agent({
  subagent_type: "team-worker",
  description: "Spawn <role> worker",
  team_name: <team-name>,
  name: "<role>",
  run_in_background: true,
  prompt: `## Role Assignment
role: <role>
role_spec: <skill_root>/roles/<role>/role.md
session: <session-folder>
session_id: <session-id>
team_name: <team-name>
requirement: <task-description>
inner_loop: <true|false>

## Progress Milestones
session_id: <session-id>
Report progress via team_msg at natural phase boundaries (context loaded -> core work done -> verification).
Report blockers immediately via team_msg type="blocker".
Report completion via team_msg type="task_complete" after final SendMessage.

Read role_spec file (@<skill_root>/roles/<role>/role.md) to load Phase 2-4 domain instructions.
Execute built-in Phase 1 (task discovery) -> role Phase 2-4 -> built-in Phase 5 (report).`
})
```

## User Commands

| Command | Action |
|---------|--------|
| `check` / `status` | View execution status graph |
| `resume` / `continue` | Advance to next step |
| `revise <TASK-ID> [feedback]` | Revise specific task |
| `feedback <text>` | Inject feedback for revision |
| `retry <TASK-ID>` | Re-run a failed task |

## Completion Action

When pipeline completes, coordinator presents:

```
AskUserQuestion({
  questions: [{
    question: "Pipeline complete. What would you like to do?",
    header: "Completion",
    multiSelect: false,
    options: [
      { label: "Archive & Clean (Recommended)", description: "Archive session, clean up team" },
      { label: "Keep Active", description: "Keep session for follow-up debugging" },
      { label: "Export Results", description: "Export debug report and patches" }
    ]
  }]
})
```

## Specs Reference

- [specs/pipelines.md](specs/pipelines.md) — Pipeline definitions and task registry
- [specs/debug-tools.md](specs/debug-tools.md) — Chrome DevTools MCP usage patterns and evidence collection

## Session Directory

```
.workflow/.team/TFD-<slug>-<date>/
├── team-session.json           # Session state + role registry
├── evidence/                   # Screenshots, snapshots, network logs
├── artifacts/                  # Test reports, RCA reports, patches, verification reports
├── wisdom/                     # Cross-task debug knowledge
└── .msg/                       # Team message bus
```

## Error Handling

| Scenario | Resolution |
|----------|------------|
| All features pass test | Report success, pipeline completes without ANALYZE/FIX/VERIFY |
| Bug not reproducible | Reproducer reports failure, coordinator asks user for more details |
| Browser not available | Report error, suggest manual reproduction steps |
| Analysis inconclusive | Analyzer requests more evidence via iteration loop |
| Fix introduces regression | Verifier reports fail, coordinator dispatches re-fix |
| No issues found in test | Skip downstream tasks, report all-pass |
| Unknown command | Error with available command list |
| Role not found | Error with role registry |