Initial commit: Claude Co-Engineer

A Factorio 2.x mod plus MCP server that lets Claude answer questions about
a running game over Lua UDP, without RCON, so it works in singleplayer.

- Read-only tools: overview, problems, entities, production, power, trends,
  research, recipes, ratio calculator, belt tracer, screenshots, Lua queries
- In-game highlights with clickable [gps] links
- /ask chat command answered by a local helper running claude -p, with a
  per-player model setting and a systemd user service

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

server/claude-co-engineer-ask.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Claude Co-Engineer: answers in-game /ask questions with Claude
+
+[Service]
+ExecStart=/home/faab/Documents/Code/Factorio/claude-co-engineer/server/.venv/bin/claude-co-engineer-ask
+Environment=FACTORIO_UDP_PORT=34200
+Environment=FACTORIO_ASK_PORT=34201
+# Uncomment to force a model for every /ask, ignoring the in-game setting (alias or full model ID):
+#Environment=FACTORIO_ASK_MODEL_OVERRIDE=claude-sonnet-5-5
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=default.target