Refactor cockpit to use DockerTmuxController pattern

Based on claude-code-tools TmuxCLIController, this refactor:

- Added DockerTmuxController class for robust tmux session management
- Implements send_keys() with configurable delay_enter
- Implements capture_pane() for output retrieval
- Implements wait_for_prompt() for pattern-based completion detection
- Implements wait_for_idle() for content-hash-based idle detection
- Implements wait_for_shell_prompt() for shell prompt detection

Also includes workflow improvements:
- Pre-task git snapshot before agent execution
- Post-task commit protocol in agent guidelines

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

luz-orchestrator.service

@@ -0,0 +1,25 @@
+[Unit]
+Description=Sarlo Server Orchestrator - Multi-project Claude coordination
+After=network.target
+
+[Service]
+Type=simple
+User=admin
+Group=admin
+WorkingDirectory=/opt/server-agents/orchestrator
+ExecStart=/usr/bin/python3 /opt/server-agents/orchestrator/daemon.py
+Restart=on-failure
+RestartSec=10
+StandardOutput=journal
+StandardError=journal
+
+# Environment
+Environment=PYTHONUNBUFFERED=1
+Environment=HOME=/home/admin
+
+# Resource limits
+MemoryMax=512M
+CPUQuota=50%
+
+[Install]
+WantedBy=multi-user.target