Fix broken links in documentation

Co-authored-by: huangyiirene <7665279+huangyiirene@users.noreply.github.com>

Author: Copilot

docs/integration/api.md

@@ -468,17 +468,8 @@ Automatically refetch data at regular intervals:
 9. **Optimize Polling** - Use reasonable polling intervals
 10. **Secure APIs** - Always use HTTPS and authentication
 
-## Examples
-
-See these examples for complete implementations:
-
-- [User Management](../../examples/user-management) - Full CRUD with API integration
-- [API Integration Demo](../../examples/api-integration) - Various API patterns
-- [Dashboard](../../examples/dashboard) - Real-time data fetching
-
 ## Related Documentation
 
-- [CRUD Protocol](./crud.md)
-- [Event Handling](./events.md)
-- [Expression System](./expressions.md)
-- [Data Sources](../integration/data-sources.md)
+- [Protocol Specifications](../protocol/overview.md)
+- [Data Sources](./objectql.md)
+- [Component Library](../api/components.md)

docs/protocol/overview.md

@@ -1,7 +1,5 @@
 # Protocol Specifications
 
-> **📊 [View Implementation Status](./implementation-status.md)** - Track the current status of all protocol features.
-
 The Object UI Protocol defines the standard schemas and conventions for describing user interfaces in JSON. This protocol is the foundation of Object UI and ensures consistency across all implementations.
 
 ## Overview

docs/spec/component.md

@@ -786,10 +786,9 @@ ai_context:
 
 ## 18. Related Specifications
 
-- [Pages](./page.md) - Using components in pages
-- [Metadata Standard](./metadata-standard.md) - Overall metadata system
-- [Objects & Fields](./object.md) - Data models used by components
-- [Actions](./action.md) - Component actions and handlers
+- [Protocol Overview](../protocol/overview.md) - Overall protocol system
+- [Component Library](./component-library.md) - Built-in components reference
+- [Architecture](./architecture.md) - System architecture
 
 ## 19. Migration Guide