Add LangGraph gateway, template manager, teleport border guard, enchantment context, server_type prep, session persistence

README.md

@@ -25,6 +25,35 @@ This fork targets a dedicated **Paper** server on port `25567` and adds advanced
 - Message model: `gemma3:12b`
 - Command model: `qwen3-coder:30b`
 
+### LangGraph-style Gateway Sidecar (implemented)
+
+- Service: `mc-langgraph-gateway.service`
+- API: `http://127.0.0.1:8091`
+- Script: `/usr/local/bin/langgraph_gateway.py`
+- Config: `/etc/mc_langgraph_gateway.json`
+
+`mc_aigod_paper.py` can route modes through session APIs:
+
+- `god` (prayer)
+- `sudo` (translator)
+- `god_system` (intervention / first-login)
+
+Enable via config:
+
+```json
+"use_langgraph_gateway": true,
+"langgraph_gateway_url": "http://127.0.0.1:8091"
+```
+
+The runtime still enforces whitelist/repair/caps/auth after gateway output.
+
+Gateway hardening currently included:
+
+- Session reuse by `player+mode` when still active (less duplicate session churn)
+- SQLite-backed session persistence across gateway restarts
+- Command sanitization at gateway return time (strips leading `/`, rejects prose/non-command lines)
+- Mode-specific command family filtering and command dedupe/cap
+
 ---
 
 ## Services
@@ -60,6 +89,32 @@ Examples:
 - `sudo create church`
 - `sudo build wall`
 
+Template manager commands:
+
+- `sudo template search <query>`
+- `sudo template download <https-url|#n|n> [name]`
+- `sudo template install <https-url> [name]`
+- `sudo template pick <n> [name]` (download from last search result index)
+- `sudo template sync` (pull from configured sync sources/manifest)
+- `sudo template build <filename|name>` (or no arg = last downloaded template)
+- `sudo template list`
+- `sudo template delete <filename>`
+- `sudo template hosts`
+
+Notes:
+
+- Template download now requires direct file URLs only (`.schem/.schematic/.nbt/.zip`)
+- Template search is direct-link only (no page scraping)
+- Recommended workflow is `template sync` + `template build`
+
+Info lookup mode via sudo:
+
+- `sudo lookup <question>`
+- `sudo wiki <question>`
+- `sudo search <question>`
+
+Lookup mode is information-only (wiki/web retrieval + optional justification), and does not execute game commands.
+
 These trigger multi-command `fill/setblock/give` sequences near the player and are optimized for Paper performance.
 
 ---