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>

hub.lua

@@ -468,7 +468,7 @@ math.randomseed(os.time())
 
 local server = lmcp.new(os.getenv("LMCP_NAME") or "hub-tools", {
     port = tonumber(os.getenv("LMCP_PORT") or arg[1]) or 8090,
-    version = "0.5.3",
+    version = "0.5.4",
     conf = os.getenv("LMCP_HUB_CONF") or "/opt/herding/etc/lmcp-hub.conf",
 })