Move .agent_daemon_password to keystore directory and update references

docs/beginner/02_project/5_done.md

@@ -711,7 +711,7 @@ This document tracks components that have been successfully deployed and are ope
   - File: `services/agent_daemon.py`
   - Systemd service: `systemd/aitbc-agent-daemon.service`
   - Configured to listen for messages and auto-reply with configurable responses
-  - Password file: `.agent_daemon_password` (temp123 for temp-agent wallet)
+  - Password file: `/var/lib/aitbc/keystore/.agent_daemon_password` (temp123 for temp-agent wallet)
 
 - ✅ **Phase 1: Core Enhancements**
   - Client: retry with exponential backoff, job history/filtering, batch submit from CSV/JSON, job templates

systemd/aitbc-agent-daemon.service

@@ -15,7 +15,7 @@ Environment="PATH=/opt/aitbc/venv/bin:/usr/local/bin:/usr/bin:/bin"
 ExecStart=/opt/aitbc/venv/bin/python /opt/aitbc/services/agent_daemon.py \
     --wallet temp-agent \
     --address ait1d18e286fc0c12888aca94732b5507c8787af71a5 \
-    --password-file /opt/aitbc/.agent_daemon_password \
+    --password-file /var/lib/aitbc/keystore/.agent_daemon_password \
     --keystore-dir /var/lib/aitbc/keystore \
     --db-path /var/lib/aitbc/data/chain.db \
     --rpc-url http://localhost:8006 \