complete codex docs

docs/modules/settings.md

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+# Settings
+
+## Purpose
+
+Panel settings, theme settings, and core site configuration.
+
+## Current Status
+
+- Production
+
+## Dependencies
+
+- auth/admin configuration
+
+## Database Tables
+
+- `settings`
+
+## Agent Interaction
+
+- None directly
+
+## User Workflow
+
+- none, admin-only
+
+## Admin Workflow
+
+- update panel settings
+- update theme settings
+
+## Security Concerns
+
+- global configuration values need protection
+
+## Known Issues
+
+- basic settings model
+
+## Missing Functionality
+
+- clearer configuration grouping and validation
+
+## Suggested Future Improvements
+
+- improve admin UX and settings validation
+
+## Recommendation
+
+- Keep
+