team-visual-a11y

name	team-visual-a11y
description	Unified team skill for visual accessibility QA. OKLCH color contrast, typography readability, focus management, WCAG AA/AAA audit at rendered level. Uses team-worker agent architecture. Triggers on "team visual a11y", "accessibility audit", "visual a11y".
allowed-tools	Agent, AskUserQuestion, Read, Write, Edit, Bash, Glob, Grep, TaskList, TaskGet, TaskUpdate, TaskCreate, TeamCreate, TeamDelete, SendMessage, mcp__ccw-tools__read_file, mcp__ccw-tools__write_file, mcp__ccw-tools__edit_file, mcp__ccw-tools__team_msg, mcp__chrome-devtools__evaluate_script, mcp__chrome-devtools__take_screenshot, mcp__chrome-devtools__emulate, mcp__chrome-devtools__lighthouse_audit, mcp__chrome-devtools__navigate_page, mcp__chrome-devtools__resize_page

Team Visual Accessibility

Deep visual accessibility QA: OKLCH-based perceptual color contrast, typography readability at all viewports, focus-visible completeness, WCAG AA/AAA audit at rendered level. Built on team-worker agent architecture -- all worker roles share a single agent definition with role-specific Phase 2-4 loaded from roles/<role>/role.md.

Architecture

Skill(skill="team-visual-a11y", args="task description")
                    |
         SKILL.md (this file) = Router
                    |
     +--------------+--------------+
     |                             |
  no --role flag              --role <name>
     |                             |
  Coordinator                  Worker
  roles/coordinator/role.md    roles/<name>/role.md
     |
     +-- analyze -> dispatch -> spawn workers -> STOP
                                    |
                    +-------+-------+-------+
                    v       v       v       |
           [3 auditors spawn in PARALLEL]   |
        color-auditor  typo-auditor  focus-auditor
                    |       |       |
                    +---+---+---+---+
                        v
               remediation-planner
                        |
                        v
               fix-implementer (inner_loop)
                        |
                        v
               [re-audit: color + focus in PARALLEL]

Role Registry

Role	Path	Prefix	Inner Loop
coordinator	roles/coordinator/role.md	--	--
color-auditor	roles/color-auditor/role.md	COLOR-*	false
typo-auditor	roles/typo-auditor/role.md	TYPO-*	false
focus-auditor	roles/focus-auditor/role.md	FOCUS-*	false
remediation-planner	roles/remediation-planner/role.md	REMED-*	false
fix-implementer	roles/fix-implementer/role.md	FIX-*	true

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: VA
• Session path: .workflow/.team/VA-<slug>-<date>/
• team_name: visual-a11y
• CLI tools: ccw cli --mode analysis (read-only), ccw cli --mode write (modifications)
• Message bus: mcp__ccw-tools__team_msg(session_id=<session-id>, ...)
• Max GC rounds: 2

Worker Spawn Template

Coordinator spawns workers using this template:

Agent({
  subagent_type: "team-worker",
  description: "Spawn <role> worker for <task-id>",
  team_name: "visual-a11y",
  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: visual-a11y
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

Specs Reference

• specs/pipelines.md -- Pipeline definitions and task registry
• specs/oklch-standards.md -- OKLCH color accessibility rules
• specs/wcag-matrix.md -- WCAG 2.1 criteria matrix
• specs/typography-scale.md -- Typography accessibility rules
• specs/focus-patterns.md -- Focus management patterns

Session Directory

.workflow/.team/VA-<slug>-<date>/
+-- .msg/
|   +-- messages.jsonl         # Team message bus
|   +-- meta.json              # Pipeline config + GC state
+-- audits/
|   +-- color/                 # Color auditor output
|   |   +-- color-audit-001.md
|   +-- typography/            # Typography auditor output
|   |   +-- typo-audit-001.md
|   +-- focus/                 # Focus auditor output
|       +-- focus-audit-001.md
+-- remediation/               # Remediation planner output
|   +-- remediation-plan.md
+-- fixes/                     # Fix implementer output
|   +-- fix-summary-001.md
+-- re-audit/                  # Re-audit output (GC loop)
|   +-- color-audit-002.md
|   +-- focus-audit-002.md
+-- evidence/                  # Screenshots, traces

Error Handling

Scenario	Resolution
Unknown command	Error with available command list
Role not found	Error with role registry
Session corruption	Attempt recovery, fallback to manual
Fast-advance conflict	Coordinator reconciles on next callback
Completion action fails	Default to Keep Active
GC loop stuck > 2 rounds	Escalate to user: accept / retry / terminate
Chrome DevTools unavailable	Degrade to static analysis only