refactor(skills): convert absolute paths to workspace-relative + relocate agent-sessions.yaml to .hermes/

Changes:
- skills/lib.sh: AGENT_SESSIONS_YAML default moved from ~/PuKi/lab/.../agent-sessions.yaml
  to <workspace_root>/.hermes/agent-sessions.yaml (relative via BASH_SOURCE)
- 6 SKILL.md: descriptions + 'Single source of truth' lines updated to .hermes/agent-sessions.yaml
- 6 SKILL.md: bash examples (~/PuKi/lab/agent_sessions/skills/...) → relative paths
- SKILL.md file:// links converted from absolute to relative (resolves workspace tool warnings)
- tmux-agent-orchestrate-create/SKILL.md: removed outdated wrapper template reference
- lib.sh internal comments: removed /home/godopu16/PuKi/lab example
- All scripts: internal source/path references use relative resolution

Verified on isolated server -L agy-relative-path-test (kill-server after):
- syntax check PASS
- E2E: create_session.sh auto-creates .hermes/agent-sessions.yaml at new location
- status.sh reads new location correctly
- 0 leftover absolute path references
- Global skill non-interference verified
- Main isolated server -L multi-agent-canary untouched

skills/tmux-agent-orchestrate-status/SKILL.md

@@ -17,7 +17,7 @@ metadata:
 
 > **Companion skills**: `tmux-agent-orchestrate-create` (start), `tmux-agent-orchestrate-resume` (re-attach), `tmux-agent-orchestrate-delete` (terminate), `tmux-agent-orchestrate-monitor` (live polling).
 > **Tmux Isolation**: `status` 명령은 YAML에 등록된 모든 세션의 격리 서버(`tmux_server` 필드)를 자동으로 조회하여 상태를 확인하므로, `TMUX_SERVER_NAME` 환경변수를 수동으로 지정하지 않아도 모든 격리 서버의 세션 상태를 통합 조회합니다.
-> **Single source of truth**: `~/PuKi/lab/agent_sessions/agent-sessions.yaml`.
+> **Single source of truth**: `./.hermes/agent-sessions.yaml`.
 
 ## What this skill does
 
@@ -30,7 +30,7 @@ This is the "what's running right now?" answer — faster than dispatching `tmux
 ```bash
 command -v tmux
 command -v python3
-test -f ~/PuKi/lab/agent_sessions/agent-sessions.yaml
+test -f .hermes/agent-sessions.yaml
 ```
 
 If `agent-sessions.yaml` doesn't exist or is malformed → print clear error, exit 1. **Do not create it.** (Use `tmux-agent-orchestrate-create` first.)
@@ -38,7 +38,7 @@ If `agent-sessions.yaml` doesn't exist or is malformed → print clear error, ex
 ## Workflow
 
 ```bash
-bash ~/PuKi/lab/agent_sessions/skills/tmux-agent-orchestrate-status/scripts/status.sh [--json]
+bash skills/tmux-agent-orchestrate-status/scripts/status.sh [--json]
 ```
 
 The script: