Feedback Survey System Refinements

What changed: The in-app feedback survey mechanism was refactored for improved accuracy and maintainability

Key improvements:

• Switched from tracking user message counts to tracking actual submission counts, preventing inconsistencies from message editing or restoration
• Moved survey-specific state from mixed local/global storage to centralized app-level state management
• Simplified conditional logic with early returns for better maintainability
• Adjusted triggering configuration:
• Enabled for all models (was disabled by default)
• Reduced probability from 100% to 0.5% when conditions are met
• Reduced turn requirement between surveys from 15 to 10
• Effectively disabled global cooldown (increased from 1 hour to ~1157 days)
• Removed per-conversation cooldown (30 minutes)

Net effect: Surveys appear less frequently but with more accurate tracking across sessions