[feature] Personal rules - user-level context rules in settings

[ClaireGz]

Problem

Users have no way to define personal rules or preferences that shape how nao responds to their queries - they can only edit memories already created

Expected behavior

• Users can create and manage personal rules from their settings page
• Personal rules apply only to that user's chat sessions, layered on top of global project rules

Promotion of personal rules to org context

• The recommendation bot can scan personal rules across users and surface patterns - if multiple users add similar rules, it suggests promoting them to the global context

Customer ID

5cd52d18-ed2e-4b39-bd92-dabdad29b771