feat(team-coordinate): align with team-skill-designer and team-lifecycle-v4 standards

Add quality-gates.md and knowledge-transfer.md specs. Update SKILL.md
with Shared Constants, Specs Reference, and new user commands. Enhance
coordinator role.md with frontmatter, Message Types, Message Bus Protocol,
and Toolbox. Add When to Use + Strategy sections to all command files.
Update role-spec-template with Identity/Boundaries blocks and validation
checklist.

.claude/skills/team-coordinate/specs/knowledge-transfer.md

@@ -0,0 +1,111 @@
+# Knowledge Transfer Protocols
+
+## 1. Transfer Channels
+
+| Channel | Scope | Mechanism | When to Use |
+|---------|-------|-----------|-------------|
+| **Artifacts** | Producer -> Consumer | Write to `<session>/artifacts/<name>.md`, consumer reads in Phase 2 | Structured deliverables (reports, plans, specs) |
+| **State Updates** | Cross-role | `team_msg(operation="log", type="state_update", data={...})` / `team_msg(operation="get_state", session_id=<session-id>)` | Key findings, decisions, metadata (small, structured data) |
+| **Wisdom** | Cross-task | Append to `<session>/wisdom/{learnings,decisions,conventions,issues}.md` | Patterns, conventions, risks discovered during execution |
+| **Context Accumulator** | Intra-role (inner loop) | In-memory array, passed to each subsequent task in same-prefix loop | Prior task summaries within same role's inner loop |
+| **Exploration Cache** | Cross-role | `<session>/explorations/cache-index.json` + per-angle JSON | Codebase discovery results, prevents duplicate exploration |
+
+## 2. Context Loading Protocol (Phase 2)
+
+Every role MUST load context in this order before starting work.
+
+| Step | Action | Required |
+|------|--------|----------|
+| 1 | Extract session path from task description | Yes |
+| 2 | `team_msg(operation="get_state", session_id=<session-id>)` | Yes |
+| 3 | Read artifact files from upstream state's `ref` paths | Yes |
+| 4 | Read `<session>/wisdom/*.md` if exists | Yes |
+| 5 | Check `<session>/explorations/cache-index.json` before new exploration | If exploring |
+| 6 | For inner_loop roles: load context_accumulator from prior tasks | If inner_loop |
+
+**Loading rules**:
+- Never skip step 2 -- state contains key decisions and findings
+- If `ref` path in state does not exist, log warning and continue
+- Wisdom files are append-only -- read all entries, newest last
+
+## 3. Context Publishing Protocol (Phase 4)
+
+| Step | Action | Required |
+|------|--------|----------|
+| 1 | Write deliverable to `<session>/artifacts/<task-id>-<name>.md` | Yes |
+| 2 | Send `team_msg(type="state_update")` with payload (see schema below) | Yes |
+| 3 | Append wisdom entries for learnings, decisions, issues found | If applicable |
+
+## 4. State Update Schema
+
+Sent via `team_msg(type="state_update")` on task completion.
+
+```json
+{
+  "status": "task_complete",
+  "task_id": "<TASK-NNN>",
+  "ref": "<session>/artifacts/<filename>",
+  "key_findings": [
+    "Finding 1",
+    "Finding 2"
+  ],
+  "decisions": [
+    "Decision with rationale"
+  ],
+  "files_modified": [
+    "path/to/file.ts"
+  ],
+  "verification": "self-validated | peer-reviewed | tested"
+}
+```
+
+**Field rules**:
+- `ref`: Always an artifact path, never inline content
+- `key_findings`: Max 5 items, each under 100 chars
+- `decisions`: Include rationale, not just the choice
+- `files_modified`: Only for implementation tasks
+- `verification`: One of `self-validated`, `peer-reviewed`, `tested`
+
+**Write state** (namespaced by role):
+```
+team_msg(operation="log", session_id=<session-id>, from=<role>, type="state_update", data={
+  "<role_name>": { "key_findings": [...], "scope": "..." }
+})
+```
+
+**Read state**:
+```
+team_msg(operation="get_state", session_id=<session-id>)
+// Returns merged state from all state_update messages
+```
+
+## 5. Exploration Cache Protocol
+
+Prevents redundant research across tasks and discussion rounds.
+
+| Step | Action |
+|------|--------|
+| 1 | Read `<session>/explorations/cache-index.json` |
+| 2 | If angle already explored, read cached result from `explore-<angle>.json` |
+| 3 | If not cached, perform exploration |
+| 4 | Write result to `<session>/explorations/explore-<angle>.json` |
+| 5 | Update `cache-index.json` with new entry |
+
+**cache-index.json format**:
+```json
+{
+  "entries": [
+    {
+      "angle": "competitor-analysis",
+      "file": "explore-competitor-analysis.json",
+      "created_by": "RESEARCH-001",
+      "timestamp": "2026-01-15T10:30:00Z"
+    }
+  ]
+}
+```
+
+**Rules**:
+- Cache key is the exploration `angle` (normalized to kebab-case)
+- Cache entries never expire within a session
+- Any role can read cached explorations; only the creator updates them