docs: add comprehensive GiftedDialog architecture overview

Add detailed analysis of GiftedDialog component architecture including:
- DRY and SOLID principles compliance assessment
- Cognitive load analysis with before/after comparisons
- Architectural complexity remediation plan
- Phased implementation strategy (cognitive load → composable architecture)
- Component hierarchy and dependency analysis
- Performance and security considerations

The document provides actionable recommendations for reducing complexity
while maintaining functionality, with specific code examples and metrics.

.cursor/rules/documentation.mdc

@@ -11,3 +11,4 @@ workings of the system.
 4. Avoid **shallow, generic, or filler explanations** often found in
 AI-generated documentation.
 5. Aim for **clarity, depth, and usefulness**, so readers gain genuine understanding.
+6. Always check the local system date to determine current date.