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-lifecycle-v5/role-specs/writer.md

@@ -0,0 +1,126 @@
+---
+role: writer
+prefix: DRAFT
+inner_loop: true
+discuss_rounds: [DISCUSS-002, DISCUSS-003, DISCUSS-004, DISCUSS-005]
+subagents: [discuss, doc-generation]
+message_types:
+  success: draft_ready
+  revision: draft_revision
+  error: error
+---
+
+# Writer — Phase 2-4
+
+## Phase 2: Context Loading
+
+**Objective**: Load all required inputs for document generation.
+
+### Document type routing
+
+| Task Subject Contains | Doc Type | Template | Prior Discussion Input |
+|----------------------|----------|----------|----------------------|
+| Product Brief | product-brief | templates/product-brief.md | discussions/DISCUSS-001-discussion.md |
+| Requirements / PRD | requirements | templates/requirements-prd.md | discussions/DISCUSS-002-discussion.md |
+| Architecture | architecture | templates/architecture-doc.md | discussions/DISCUSS-003-discussion.md |
+| Epics | epics | templates/epics-template.md | discussions/DISCUSS-004-discussion.md |
+
+### Inline discuss mapping
+
+| Doc Type | Inline Discuss Round | Perspectives |
+|----------|---------------------|-------------|
+| product-brief | DISCUSS-002 | product, technical, quality, coverage |
+| requirements | DISCUSS-003 | quality, product, coverage |
+| architecture | DISCUSS-004 | technical, risk |
+| epics | DISCUSS-005 | product, technical, quality, coverage |
+
+### Progressive dependency loading
+
+| Doc Type | Requires |
+|----------|----------|
+| product-brief | discovery-context.json |
+| requirements | + product-brief.md |
+| architecture | + requirements/_index.md |
+| epics | + architecture/_index.md |
+
+**Prior decisions from accumulator**: Pass context_accumulator summaries as "Prior Decisions" to subagent.
+
+| Input | Source | Required |
+|-------|--------|----------|
+| Document standards | `../../specs/document-standards.md` (relative to SKILL) | Yes |
+| Template | From routing table | Yes |
+| Spec config | `<session-folder>/spec/spec-config.json` | Yes |
+| Discovery context | `<session-folder>/spec/discovery-context.json` | Yes |
+| Discussion feedback | `<session-folder>/discussions/<discuss-file>` | If exists |
+| Prior decisions | context_accumulator (in-memory) | If prior tasks exist |
+
+## Phase 3: Subagent Document Generation
+
+**Objective**: Delegate document generation to doc-generation subagent.
+
+Do NOT execute CLI calls in main agent. Delegate to subagent:
+
+```
+Task({
+  subagent_type: "universal-executor",
+  run_in_background: false,
+  description: "Generate <doc-type> document",
+  prompt: `<from subagents/doc-generation-subagent.md>
+
+## Task
+- Document type: <doc-type>
+- Session folder: <session-folder>
+- Template: <template-path>
+
+## Context
+- Spec config: <spec-config content>
+- Discovery context: <discovery-context summary>
+- Prior discussion feedback: <discussion-file content if exists>
+- Prior decisions (from writer accumulator):
+  <context_accumulator serialized>
+
+## Expected Output
+Return JSON:
+{
+  "artifact_path": "<output-path>",
+  "summary": "<100-200 char summary>",
+  "key_decisions": ["<decision-1>", ...],
+  "sections_generated": ["<section-1>", ...],
+  "warnings": ["<warning if any>"]
+}`
+})
+```
+
+Main agent receives only the JSON summary. Document is written to disk by subagent.
+
+## Phase 4: Self-Validation + Inline Discuss
+
+### 4a: Self-Validation
+
+| Check | What to Verify |
+|-------|---------------|
+| has_frontmatter | Starts with YAML frontmatter |
+| sections_complete | All template sections present |
+| cross_references | session_id included |
+| discussion_integrated | Reflects prior round feedback (if exists) |
+
+### 4b: Inline Discuss
+
+Call discuss subagent for this task's discuss round:
+- Artifact: `<output-path>` (the generated document)
+- Round: `<DISCUSS-NNN>` from mapping table
+- Perspectives: from mapping table
+
+Handle discuss verdict per team-worker consensus handling protocol.
+
+**Report**: doc type, validation status, discuss verdict + severity, average rating, summary, output path.
+
+## Error Handling
+
+| Scenario | Resolution |
+|----------|------------|
+| Subagent failure | Retry once with alternative subagent_type. Still fails → log error, continue next task |
+| Discuss subagent fails | Skip discuss, log warning |
+| Cumulative 3 task failures | SendMessage to coordinator, STOP |
+| Prior doc not found | Notify coordinator, request prerequisite |
+| Discussion contradicts prior docs | Note conflict, flag for coordinator |