feat: Integrate CursorProvider into ProviderFactory

- Added CursorProvider to the ProviderFactory for handling cursor-* models.
- Updated getProviderNameForModel method to determine the appropriate provider based on model identifiers.
- Enhanced getAllProviders method to return both ClaudeProvider and CursorProvider.
- Updated documentation to reflect the completion of the Provider Factory integration phase.

apps/server/src/providers/index.ts

@@ -0,0 +1,23 @@
+/**
+ * Provider exports
+ */
+
+// Base provider
+export { BaseProvider } from './base-provider.js';
+export type {
+  ProviderConfig,
+  ExecuteOptions,
+  ProviderMessage,
+  InstallationStatus,
+  ModelDefinition,
+} from './types.js';
+
+// Claude provider
+export { ClaudeProvider } from './claude-provider.js';
+
+// Cursor provider
+export { CursorProvider, CursorErrorCode, CursorError } from './cursor-provider.js';
+export { CursorConfigManager } from './cursor-config-manager.js';
+
+// Provider factory
+export { ProviderFactory } from './provider-factory.js';