refactor: rename metadata directory .hermes to .mam in backplane scripts and documents

.agents/skills/tmux-agent-orchestrate-resume/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: tmux-agent-orchestrate-resume
-description: "Resume an existing agent (claude, antigravity/agy) conversation by UUID into a tmux session. Reads .hermes/agent-sessions.yaml for the saved session/conversation id, spawns (or reuses) a tmux session of the matching name, and runs `claude -r <id>` or `agy --conversation <id>` inside. Use when you want to reattach to a previous session's context, or revive a session whose tmux died but the agent's conversation is still on disk."
+description: "Resume an existing agent (claude, antigravity/agy) conversation by UUID into a tmux session. Reads .mam/agent-sessions.yaml for the saved session/conversation id, spawns (or reuses) a tmux session of the matching name, and runs `claude -r <id>` or `agy --conversation <id>` inside. Use when you want to reattach to a previous session's context, or revive a session whose tmux died but the agent's conversation is still on disk."
 version: 1.0.0
 author: godopu
 license: MIT
@@ -17,7 +17,7 @@ metadata:
 
 > **Companion skills**: `tmux-agent-orchestrate-create` (start a fresh agent), `tmux-agent-orchestrate-stop` (terminate), `tmux-agent-orchestrate-monitor` (live status).
 > **Tmux Isolation**: `TMUX_SERVER_NAME` env var를 create에서 설정한 경우, 동일 서버에서 동작합니다. 자세한 격리 패턴은 [tmux-agent-orchestrate-create/SKILL.md](../tmux-agent-orchestrate-create/SKILL.md) 참조.
-> **Single source of truth**: `./.hermes/agent-sessions.yaml`.
+> **Single source of truth**: `./.mam/agent-sessions.yaml`.
 
 ## What this skill does
 
@@ -132,7 +132,7 @@ tmux list-panes -t "$SESSION_NAME" -F 'cmd=#{pane_current_command} cwd=#{pane_cu
 # 2. agent-sessions.yaml updated
 python3 -c "
 import yaml
-d = yaml.safe_load(open('.hermes/agent-sessions.yaml'))
+d = yaml.safe_load(open('.mam/agent-sessions.yaml'))
 s = [s for s in d['tmux_sessions'] if s['name'] == '$SESSION_NAME'][0]
 print(f'  status: {s[\"status\"]}')
 print(f'  pane.cmd_full: {s[\"pane\"][\"cmd_full\"]}')