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- tmux-agent-orchestrate-create/SKILL.md: removed outdated wrapper template reference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-delete/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: tmux-agent-orchestrate-delete
-description: "Terminate an agent tmux session (claude, antigravity/agy) and update ~/PuKi/lab/agent_sessions/agent-sessions.yaml to mark it terminated with timestamp. Does NOT delete on-disk conversation artifacts (jsonl/db) — those are preserved for future resume. Use when ending a work session, switching to a different one, or cleaning up before a fresh start."
+description: "Terminate an agent tmux session (claude, antigravity/agy) and update .hermes/agent-sessions.yaml to mark it terminated with timestamp. Does NOT delete on-disk conversation artifacts (jsonl/db) — those are preserved for future resume. Use when ending a work session, switching to a different one, or cleaning up before a fresh start."
 version: 1.0.0
 author: godopu
 license: MIT
@@ -17,7 +17,7 @@ metadata:
 
 > **Companion skills**: `tmux-agent-orchestrate-create` (start), `tmux-agent-orchestrate-resume` (re-attach), `tmux-agent-orchestrate-monitor` (live status).
 > **Tmux Isolation**: `delete` 명령은 YAML의 `tmux_server` 필드를 자동으로 파싱하여 해당 격리 서버의 세션을 안전하게 종료(kill)하므로, `TMUX_SERVER_NAME` 환경변수를 수동으로 지정할 필요가 없습니다.
-> **Single source of truth**: `~/PuKi/lab/agent_sessions/agent-sessions.yaml`.
+> **Single source of truth**: `./.hermes/agent-sessions.yaml`.
 
 ## What this skill does
 
@@ -36,7 +36,7 @@ The user explicitly chooses:
 
 ```bash
 SESSION_NAME=<workspace>-creator-<agent>  # convention
-AGENT_SESSIONS_YAML=~/PuKi/lab/agent_sessions/agent-sessions.yaml
+AGENT_SESSIONS_YAML=.hermes/agent-sessions.yaml
 
 # 1) Session is registered?
 python3 -c "
@@ -65,16 +65,16 @@ fi
 
 ```bash
 # 1. soft delete (YAML only — tmux left running)
-bash ~/PuKi/lab/agent_sessions/skills/tmux-agent-orchestrate-delete/scripts/delete_session.sh \
+bash skills/tmux-agent-orchestrate-delete/scripts/delete_session.sh \
   --session "$SESSION_NAME" --mode soft
 
 # 2. hard delete (default — kill tmux + update YAML)
-bash ~/PuKi/lab/agent_sessions/skills/tmux-agent-orchestrate-delete/scripts/delete_session.sh \
+bash skills/tmux-agent-orchestrate-delete/scripts/delete_session.sh \
   --session "$SESSION_NAME" --mode hard
 
 # 3. hard delete + clean up on-disk conversation (DANGEROUS)
 #    — this prevents any future resume. Use only when user is certain.
-bash ~/PuKi/lab/agent_sessions/skills/tmux-agent-orchestrate-delete/scripts/delete_session.sh \
+bash skills/tmux-agent-orchestrate-delete/scripts/delete_session.sh \
   --session "$SESSION_NAME" --mode hard --purge-conversation
 ```