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-iterdev/roles/architect.md

@@ -53,10 +53,12 @@ Technical architect. Responsible for technical design, task decomposition, and a
 
 Before every SendMessage, log via `mcp__ccw-tools__team_msg`:
 
+**NOTE**: `team` must be **session ID** (e.g., `TID-project-2026-02-27`), NOT team name. Extract from `Session:` field in task description.
+
 ```
 mcp__ccw-tools__team_msg({
   operation: "log",
-  team: "iterdev",
+  team: <session-id>,  // e.g., "TID-project-2026-02-27", NOT "iterdev"
   from: "architect",
   to: "coordinator",
   type: <message-type>,
@@ -68,7 +70,7 @@ mcp__ccw-tools__team_msg({
 **CLI fallback** (when MCP unavailable):
 
 ```
-Bash("ccw team log --team iterdev --from architect --to coordinator --type <message-type> --summary \"[architect] DESIGN complete\" --ref <design-path> --json")
+Bash("ccw team log --team <session-id> --from architect --to coordinator --type <message-type> --summary \"[architect] DESIGN complete\" --ref <design-path> --json")
 ```
 
 ---
@@ -222,7 +224,7 @@ Write(<session-folder>/shared-memory.json, JSON.stringify(sharedMemory, null, 2)
 
 ```
 mcp__ccw-tools__team_msg({
-  operation: "log", team: "iterdev", from: "architect", to: "coordinator",
+  operation: "log", team: <session-id>, from: "architect", to: "coordinator",  // team = session ID, e.g., "TID-project-2026-02-27"
   type: "design_ready",
   summary: "[architect] Design complete: <count> components, <task-count> tasks",
   ref: <design-path>