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-testing/roles/analyst.md

@@ -57,7 +57,7 @@ Before every SendMessage, log via `mcp__ccw-tools__team_msg`:
 ```
 mcp__ccw-tools__team_msg({
   operation: "log",
-  team: "testing",
+  team: <session-id>,  // MUST be session ID (e.g., TST-xxx-date), NOT team name. Extract from Session: field in task description.
   from: "analyst",
   to: "coordinator",
   type: <message-type>,
@@ -69,7 +69,7 @@ mcp__ccw-tools__team_msg({
 **CLI fallback** (when MCP unavailable):
 
 ```
-Bash("ccw team log --team testing --from analyst --to coordinator --type <message-type> --summary \"[analyst] ...\" --ref <artifact-path> --json")
+Bash("ccw team log --team <session-id> --from analyst --to coordinator --type <message-type> --summary \"[analyst] ...\" --ref <artifact-path> --json")
 ```
 
 ---
@@ -215,7 +215,7 @@ Write("<session-folder>/shared-memory.json", <updated-json>)
 
 ```
 mcp__ccw-tools__team_msg({
-  operation: "log", team: "testing", from: "analyst", to: "coordinator",
+  operation: "log", team: <session-id>  // MUST be session ID, NOT team name, from: "analyst", to: "coordinator",
   type: "analysis_ready",
   summary: "[analyst] Quality report: score <score>/10, <pattern-count> defect patterns, <gap-count> coverage gaps",
   ref: "<session-folder>/analysis/quality-report.md"

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

@@ -237,7 +237,9 @@ When receiving `tests_failed` or `coverage_report`:
 **GC Loop trigger message**:
 ```
 mcp__ccw-tools__team_msg({
-  operation: "log", team: "testing", from: "coordinator", to: "generator",
+  operation: "log",
+  team: <session-id>,  // MUST be session ID (e.g., TST-xxx-date), NOT team name. Extract from Session: field in task description.
+  from: "coordinator", to: "generator",
   type: "gc_loop_trigger",
   summary: "[coordinator] GC round <N>: coverage <X>% < target <Y>%, revise tests"
 })

.claude/skills/team-testing/roles/executor.md

@@ -62,7 +62,7 @@ Before every SendMessage, log via `mcp__ccw-tools__team_msg`:
 ```
 mcp__ccw-tools__team_msg({
   operation: "log",
-  team: "testing",
+  team: <session-id>,  // MUST be session ID (e.g., TST-xxx-date), NOT team name. Extract from Session: field in task description.
   from: "executor",
   to: "coordinator",
   type: <message-type>,
@@ -74,7 +74,7 @@ mcp__ccw-tools__team_msg({
 **CLI fallback** (when MCP unavailable):
 
 ```
-Bash("ccw team log --team testing --from executor --to coordinator --type <message-type> --summary \"[executor] ...\" --ref <artifact-path> --json")
+Bash("ccw team log --team <session-id> --from executor --to coordinator --type <message-type> --summary \"[executor] ...\" --ref <artifact-path> --json")
 ```
 
 ---
@@ -248,7 +248,7 @@ Write("<session-folder>/shared-memory.json", <updated-json>)
 
 ```
 mcp__ccw-tools__team_msg({
-  operation: "log", team: "testing", from: "executor", to: "coordinator",
+  operation: "log", team: <session-id>  // MUST be session ID, NOT team name, from: "executor", to: "coordinator",
   type: <passed ? "tests_passed" : "tests_failed">,
   summary: "[executor] <passed|failed>: pass=<pass_rate>%, coverage=<coverage>% (target: <target>%), iterations=<N>",
   ref: "<session-folder>/results/run-<N>.json"

.claude/skills/team-testing/roles/generator.md

@@ -62,7 +62,7 @@ Before every SendMessage, log via `mcp__ccw-tools__team_msg`:
 ```
 mcp__ccw-tools__team_msg({
   operation: "log",
-  team: "testing",
+  team: <session-id>,  // MUST be session ID (e.g., TST-xxx-date), NOT team name. Extract from Session: field in task description.
   from: "generator",
   to: "coordinator",
   type: <message-type>,
@@ -74,7 +74,7 @@ mcp__ccw-tools__team_msg({
 **CLI fallback** (when MCP unavailable):
 
 ```
-Bash("ccw team log --team testing --from generator --to coordinator --type <message-type> --summary \"[generator] ...\" --ref <artifact-path> --json")
+Bash("ccw team log --team <session-id> --from generator --to coordinator --type <message-type> --summary \"[generator] ...\" --ref <artifact-path> --json")
 ```
 
 ---
@@ -232,7 +232,7 @@ Write("<session-folder>/shared-memory.json", <updated-json>)
 
 ```
 mcp__ccw-tools__team_msg({
-  operation: "log", team: "testing", from: "generator", to: "coordinator",
+  operation: "log", team: <session-id>  // MUST be session ID, NOT team name, from: "generator", to: "coordinator",
   type: <is-revision ? "tests_revised" : "tests_generated">,
   summary: "[generator] <Generated|Revised> <file-count> <layer> test files",
   ref: "<session-folder>/tests/<layer>/"

.claude/skills/team-testing/roles/strategist.md

@@ -58,7 +58,7 @@ Before every SendMessage, log via `mcp__ccw-tools__team_msg`:
 ```
 mcp__ccw-tools__team_msg({
   operation: "log",
-  team: "testing",
+  team: <session-id>,  // MUST be session ID (e.g., TST-xxx-date), NOT team name. Extract from Session: field in task description.
   from: "strategist",
   to: "coordinator",
   type: <message-type>,
@@ -70,7 +70,7 @@ mcp__ccw-tools__team_msg({
 **CLI fallback** (when MCP unavailable):
 
 ```
-Bash("ccw team log --team testing --from strategist --to coordinator --type <message-type> --summary \"[strategist] ...\" --ref <artifact-path> --json")
+Bash("ccw team log --team <session-id> --from strategist --to coordinator --type <message-type> --summary \"[strategist] ...\" --ref <artifact-path> --json")
 ```
 
 ---