fix(team): use session-id instead of team-name in team_msg across all skills

Root cause: team_msg --team parameter maps directly to filesystem path
.workflow/.team/{value}/.msg/, so using team-name creates wrong directory.

Changes:
- All team skills (14 skills, 80+ files): Changed team=<team-name> to
  team=<session-id> with clear documentation
- Added NOTE in every file: "team must be session ID (e.g., TLS-xxx-date),
  NOT team name. Extract from Session: field in task description."
- CLI fallback examples updated: --team brainstorm -> --team <session-id>

Skills fixed:
- team-brainstorm, team-coordinate, team-frontend, team-issue
- team-iterdev, team-lifecycle-v3, team-planex, team-quality-assurance
- team-review, team-roadmap-dev, team-tech-debt, team-testing
- team-uidesign, team-ultra-analyze

Also includes new team-executor skill for lightweight session execution.

.claude/skills/team-planex/SKILL.md

@@ -100,8 +100,9 @@ Optional flags: `--team` (default: "planex"), `--exec` (execution method), `-y`/
 
 每次 SendMessage 前，先调用 `mcp__ccw-tools__team_msg` 记录：
 
-- 参数: operation="log", team=`<team-name>`, from=`<role>`, to=`<target-role>`, type=`<type>`, summary="[`<role>`] `<summary>`", ref=`<file_path>`
-- **CLI fallback**: 当 MCP 不可用时 -> `ccw team log --team <team> --from <role> --to <target> --type <type> --summary "[<role>] ..." --json`
+- 参数: operation="log", team=`<session-id>`, from=`<role>`, to=`<target-role>`, type=`<type>`, summary="[`<role>`] `<summary>`", ref=`<file_path>`
+- **注意**: `team` 必须是 **session ID** (如 `PEX-project-2026-02-27`), 不是 team name. 从任务描述的 `Session:` 字段提取.
+- **CLI fallback**: 当 MCP 不可用时 -> `ccw team log --team <session-id> --from <role> --to <target> --type <type> --summary "[<role>] ..." --json`
 
 **Message types by role**: