v0.5.4: ship examples/lmcp.service template

Companion to lmcp-hub.service. Gives a copy-and-edit starting point for
per-host lmcp instances (foo-tools style). Handles the Arch-vs-Debian
/usr/bin/lua vs /usr/bin/lua5.4 split via a comment pointing users to
override ExecStart.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

examples/lmcp.service

@@ -0,0 +1,22 @@
+[Unit]
+Description=lmcp MCP Server
+After=network.target
+
+[Service]
+Type=simple
+User=root
+# Arch ships the Lua 5.4 binary as /usr/bin/lua; Debian ships /usr/bin/lua5.4.
+# Override ExecStart if your distro differs.
+ExecStart=/usr/bin/lua /usr/share/lua/5.4/server.lua
+# Distinct name per host: foo-tools appears in /mcp listings and logs.
+Environment=LMCP_NAME=CHANGEME-tools
+Environment=LMCP_PORT=8080
+# Bearer token. Generate with: openssl rand -hex 24
+# For untrusted networks, bind to LAN-only via firewall; the server itself
+# listens on 0.0.0.0 by default.
+Environment=LMCP_TOKEN=CHANGEME
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target