complete codex docs

docs/modules/tshock.md

@@ -0,0 +1,54 @@
+# TShock
+
+## Purpose
+
+Terraria / TShock-specific support module.
+
+## Current Status
+
+- Alpha
+- Partial
+
+## Dependencies
+
+- Terraria/TShock server support
+- token management
+
+## Database Tables
+
+- `tshock`
+
+## Agent Interaction
+
+- token and server data used for TShock support
+
+## User Workflow
+
+- only for compatible Terraria servers
+
+## Admin Workflow
+
+- configure and manage TShock-specific settings
+
+## Security Concerns
+
+- token storage
+- compatibility gating
+
+## Known Issues
+
+- alpha status
+- should only appear for the right game types
+
+## Missing Functionality
+
+- complete docs and tighter game capability gating
+
+## Suggested Future Improvements
+
+- expose only when XML/game capability says Terraria/TShock
+
+## Recommendation
+
+- Keep conditional / Improve
+