complete codex docs

docs/modules/modulemanager.md

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+# Module Manager
+
+## Purpose
+
+Install and manage Panel modules and access rights.
+
+## Current Status
+
+- Functional
+
+## Dependencies
+
+- module metadata
+- access rights registry
+
+## Database Tables
+
+- `module_access_rights`
+
+## Agent Interaction
+
+- None directly
+
+## User Workflow
+
+- none, admin-only
+
+## Admin Workflow
+
+- enable/disable modules
+- manage access flags
+
+## Security Concerns
+
+- module access rights control what users can see and do
+
+## Known Issues
+
+- older module administration workflow
+
+## Missing Functionality
+
+- better module documentation and dependency graph
+
+## Suggested Future Improvements
+
+- surface module health and compatibility more clearly
+
+## Recommendation
+
+- Keep
+