Add metrics CLI for project-scoped agent performance records.

Implement record, show, list, and export commands; document session-close
protocol template; extend cheat sheet and agency-framework docs; add CLI tests.

docs/templates/session-close-protocol.md

@@ -0,0 +1,33 @@
+# Session-Close Protocol Template
+
+Reference template for memory-enabled agents. Copy the **Session Close** block
+into `agents/agent-<name>.md` and adapt the metrics line to the agent.
+
+## Session Close
+
+1. Update `## Accumulated Findings`, `## What Worked`, and `## Watch Points` as needed.
+2. Append one line to `## Session Log`: `YYYY-MM-DD · <summary> · <outcome>`.
+3. Bump `last_updated` to today and increment `session_count` in memory frontmatter.
+4. Record session metrics (adjust flags to match outcome):
+
+```bash
+kaizen-agentic metrics record <agent-name> --success --time <seconds> --quality <0.0-1.0>
+# or on failure:
+kaizen-agentic metrics record <agent-name> --failure --time <seconds>
+```
+
+Optional: pass a full JSON record (ADR-004 schema) via stdin:
+
+```bash
+echo '{"success": true, "quality_score": 0.9, "primary_metric": {"name": "...", "value": 1.0, "target": 1.0}}' \
+  | kaizen-agentic metrics record <agent-name> --json
+```
+
+Use `--idempotency-key <session-id>` to avoid duplicate records if the close
+protocol runs more than once for the same session.
+
+## Pilot agents
+
+`tdd-workflow` is the reference implementation (WP-0003 Part 5). Other
+memory-enabled agents should adopt this block as the metrics CLI becomes available
+in their workflows.