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-roadmap-dev/SKILL.md

@@ -49,7 +49,7 @@ Multi-phase:
 
 Parse `$ARGUMENTS`:
 - Has `--role <name>` → Read `roles/<name>/role.md`, execute Phase 2-4
-- No `--role` → Read `roles/coordinator/role.md`, execute entry router
+- No `--role` → `@roles/coordinator/role.md`, execute entry router
 
 ## Shared Constants
 
@@ -72,14 +72,14 @@ Agent({
   run_in_background: true,
   prompt: `## Role Assignment
 role: <role>
-role_spec: ~  or <project>/.claude/skills/team-roadmap-dev/roles/<role>/role.md
+role_spec: <skill_root>/roles/<role>/role.md
 session: <session-folder>
 session_id: <session-id>
 team_name: roadmap-dev
 requirement: <task-description>
 inner_loop: true
 
-Read role_spec file to load Phase 2-4 domain instructions.
+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).`
 })
 ```