Rename claude-agent to lxc171-claude-agent with full setup documentation

- Rename proxmox/claude-agent/ to proxmox/lxc171-claude-agent/
- Move scripts to scripts/ subdirectory
- Add complete installation guide for new LXC from scratch
- Update proxmox/README.md with LXC 171 documentation and navigation
- Add LXC 171 to containers table
- Remove .serena/project.yml

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

proxmox/lxc171-claude-agent/scripts/start-agent.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+# Start or attach to Claude agent tmux session
+
+SESSION_NAME="agent"
+
+# Load nvm
+export NVM_DIR="$HOME/.nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+
+# Check if session exists
+if tmux has-session -t $SESSION_NAME 2>/dev/null; then
+    echo "Attaching to existing session: $SESSION_NAME"
+    tmux attach-session -t $SESSION_NAME
+else
+    echo "Creating new session: $SESSION_NAME"
+    tmux new-session -s $SESSION_NAME -c /workspace
+fi