complete codex docs

docs/modules/register.md

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+# Register
+
+## Purpose
+
+User registration module.
+
+## Current Status
+
+- Functional
+
+## Dependencies
+
+- auth and account creation flow
+
+## Database Tables
+
+- none declared in module metadata
+
+## Agent Interaction
+
+- None directly
+
+## User Workflow
+
+- create an account
+
+## Admin Workflow
+
+- not an admin surface
+
+## Security Concerns
+
+- registration abuse prevention
+- email validation
+
+## Known Issues
+
+- basic account onboarding module
+
+## Missing Functionality
+
+- richer onboarding / invitation flows
+
+## Suggested Future Improvements
+
+- keep stable and minimal
+
+## Recommendation
+
+- Keep
+