fix(herdr): resolve shim routing defects, add workspace scoping, and bump to v3.0.1

- Resolve Herdr shim 5 routing & paste defects (ISSUE-1 ~ ISSUE-5):
  * paste-buffer: use pane send-text without auto-enter, propagate rc=3 to send_keys_safe
  * exact-match pane resolution: remove substring matching ('in tn') across all branches
  * workspace scoping: introduce HERDR_WORKSPACE_ID and .mam/herdr_workspace_id persistence
  * unified resolver: single _resolve_herdr_pane_id helper across shim commands
- Resolve dialog token false-positive on 'Yes, try it' tip and isolate fullscreen modal rejection
- Sync mock Herdr CLI contracts in tests/conftest.py
- Add contract tests H-15~H-23 and regression tests D-4~D-7 (412 tests, 100% PASS)
- Add multi-agent loop plans, review reports, and bug report
- Update framework and skill packages to v3.0.1

.agents/skills/multi-agent-mux-monitor/SKILL.md

@@ -1,7 +1,7 @@
 ---
 name: multi-agent-mux-monitor
 description: "Run a long-lived reconciler that watches .mam/agent-sessions.yaml against the actual herdr/agent runtime state and reconciles them. Use when you want live visibility into which agent sessions are running, which are dead, which have stale YAML entries, and which have new session ids that haven't been recorded yet. Runs as a persistent loop (`reconcile.sh --subscribe`) that keeps going until it times out, idles out, or is interrupted."
-version: 3.0.0
+version: 3.0.1
 author: godopu
 license: MIT
 platforms: [linux, macos]