feat(bootstrap): add shared session bootstrap and machine-alias resolver

templates/AGENT-ONBOARDING.md

@@ -1,5 +1,16 @@
 # New Agent Onboarding Template
 
+## 0) Register MCP once per client
+
+- Codex:
+
+```bash
+codex mcp add memory-gateway --url http://100.64.0.45:8787/mcp
+```
+
+- Claude/Cursor: 在对应客户端 MCP 配置中添加同一 URL：
+  - `http://100.64.0.45:8787/mcp`
+
 ## 1) Create agent lane
 
 ```bash
@@ -19,7 +30,20 @@ scripts/add-agent.sh kimi-helper
 scripts/add-agent.sh <agent-id> --openclaw-config ~/.openclaw/openclaw.json
 ```
 
-## 3) Commit and push
+## 3) Session first message (recommended)
+
+```bash
+cd /Users/lingyuzeng/project/collective-memory-repo
+scripts/print-session-bootstrap.sh --tool codex --branch main
+```
+
+任务会话示例：
+
+```bash
+scripts/print-session-bootstrap.sh --tool codex --branch task/openclawd-migration-2026-03 --task-id openclawd-migration-2026-03
+```
+
+## 4) Commit and push
 
 ```bash
 git add agents/<agent-id>
@@ -27,7 +51,7 @@ git commit -m "feat(agent): add <agent-id> memory lane"
 git push
 ```
 
-## 4) Verify memory-gateway visibility
+## 5) Verify memory-gateway visibility
 
 ```bash
 curl -fsS http://100.64.0.45:8787/health
@@ -36,7 +60,7 @@ printf '{"branch":"main","require_latest":true}' \
   http://100.64.0.45:8787/memory/status
 ```
 
-## 5) Query smoke test
+## 6) Query smoke test
 
 ```bash
 printf '{"query":"<agent-id>","branch":"main","require_latest":true,"top_k":3}' \