feat: apply Pattern 10 to all team skills — @ strong refs + workspace resolution

- SKILL.md: coordinator entry uses `@roles/coordinator/role.md` strong reference
- coordinator/role.md: command delegations use `@commands/xxx.md` prefix
- coordinator Phase 2: resolve project_root + skill_root via `Bash pwd` before TeamCreate
- Worker Spawn Template: role_spec uses absolute path from session skill_root
- skills_lib/team-skill-designer: document Pattern 10 + add quality checks

Covers 17 team skills: team-lifecycle-v4, team-frontend, team-ultra-analyze,
team-ux-improve, team-arch-opt, team-brainstorm, team-review, team-uidesign,
team-issue, team-iterdev, team-perf-opt, team-planex, team-quality-assurance,
team-testing, team-tech-debt, team-coordinate, team-roadmap-dev, team-frontend-debug

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/skills/team-testing/roles/coordinator/role.md

@@ -42,7 +42,7 @@ When coordinator needs to execute a specific phase:
 | Interrupted session | Active session in .workflow/.team/TST-* | -> Phase 0 |
 | New session | None of above | -> Phase 1 |
 
-For callback/check/resume/adapt/complete: load commands/monitor.md, execute handler, STOP.
+For callback/check/resume/adapt/complete: load @commands/monitor.md, execute handler, STOP.
 
 ## Phase 0: Session Resume Check
 
@@ -69,17 +69,20 @@ TEXT-LEVEL ONLY. No source code reading.
 | Otherwise | comprehensive |
 
 4. Clarify if ambiguous (AskUserQuestion for scope)
-5. Delegate to commands/analyze.md
+5. Delegate to @commands/analyze.md
 6. Output: task-analysis.json
 7. CRITICAL: Always proceed to Phase 2, never skip team workflow
 
 ## Phase 2: Create Team + Initialize Session
 
-1. Generate session ID: TST-<slug>-<date>
-2. Create session folder structure (strategy/, tests/L1-unit/, tests/L2-integration/, tests/L3-e2e/, results/, analysis/, wisdom/)
-3. TeamCreate with team name "testing"
-4. Read specs/pipelines.md -> select pipeline based on mode
-5. Initialize pipeline via team_msg state_update:
+1. Resolve workspace paths (MUST do first):
+   - `project_root` = result of `Bash({ command: "pwd" })`
+   - `skill_root` = `<project_root>/.claude/skills/team-testing`
+2. Generate session ID: TST-<slug>-<date>
+3. Create session folder structure (strategy/, tests/L1-unit/, tests/L2-integration/, tests/L3-e2e/, results/, analysis/, wisdom/)
+4. TeamCreate with team name "testing"
+5. Read specs/pipelines.md -> select pipeline based on mode
+6. Initialize pipeline via team_msg state_update:
    ```
    mcp__ccw-tools__team_msg({
      operation: "log", session_id: "<id>", from: "coordinator",
@@ -93,11 +96,11 @@ TEXT-LEVEL ONLY. No source code reading.
      }
    })
    ```
-6. Write session.json
+7. Write session.json
 
 ## Phase 3: Create Task Chain
 
-Delegate to commands/dispatch.md:
+Delegate to @commands/dispatch.md:
 1. Read specs/pipelines.md for selected pipeline's task registry
 2. Topological sort tasks
 3. Create tasks via TaskCreate with blockedBy
@@ -105,7 +108,7 @@ Delegate to commands/dispatch.md:
 
 ## Phase 4: Spawn-and-Stop
 
-Delegate to commands/monitor.md#handleSpawnNext:
+Delegate to @commands/monitor.md#handleSpawnNext:
 1. Find ready tasks (pending + blockedBy resolved)
 2. Spawn team-worker agents (see SKILL.md Spawn Template)
 3. Output status summary