complete codex docs

docs/modules/steam_workshop.md

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+# Steam Workshop
+
+## Purpose
+
+Legacy standalone Steam Workshop support.
+
+## Current Status
+
+- Deprecated
+- Compatibility only
+
+## Dependencies
+
+- Steam Workshop DB helpers
+- legacy helper functions
+
+## Database Tables
+
+- `steam_workshop_game_profiles`
+- `steam_workshop_server_mods`
+- `steam_workshop_server_settings`
+
+## Agent Interaction
+
+- workshop download/update helpers
+
+## User Workflow
+
+- legacy workshop path only
+
+## Admin Workflow
+
+- legacy migration / compatibility
+
+## Security Concerns
+
+- should not compete with the current Server Content Manager
+
+## Known Issues
+
+- explicitly deprecated in code comments
+
+## Missing Functionality
+
+- modern unified Workshop/content UX
+
+## Suggested Future Improvements
+
+- keep only compatibility helpers
+- migrate users into `addonsmanager`
+
+## Recommendation
+
+- Deprecate / Merge
+