complete codex docs

docs/modules/update.md

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+# Update
+
+## Purpose
+
+Panel update and patch management.
+
+## Current Status
+
+- Production
+- Admin-only
+
+## Dependencies
+
+- patch and update logs
+- admin access
+
+## Database Tables
+
+- `update_blacklist`
+- `panel_update_log`
+- `update_patches`
+
+## Agent Interaction
+
+- indirect if patch operations touch remote systems
+
+## User Workflow
+
+- none, admin-only
+
+## Admin Workflow
+
+- inspect and apply updates
+- review patch logs
+
+## Security Concerns
+
+- updates modify the control plane itself
+
+## Known Issues
+
+- can be confusing if not clearly separated from game-server updates
+
+## Missing Functionality
+
+- clearer update history and rollback guidance
+
+## Suggested Future Improvements
+
+- keep admin-only and document carefully
+
+## Recommendation
+
+- Keep
+