* feat: add filterFilesByEndpointConfig to filter disabled file processing by provider
* chore: explicit define of endpointFileConfig for better debugging
* refactor: move `normalizeEndpointName` to data-provider as used app-wide
* chore: remove overrideEndpoint from useFileHandling
* refactor: improve endpoint file config selection
* refactor: update filterFilesByEndpointConfig to accept structured parameters and improve endpoint file config handling
* refactor: replace defaultFileConfig with getEndpointFileConfig for improved file configuration handling across components
* test: add comprehensive unit tests for getEndpointFileConfig to validate endpoint configuration handling
* refactor: streamline agent endpoint assignment and improve file filtering logic
* feat: add error handling for disabled file uploads in endpoint configuration
* refactor: update encodeAndFormat functions to accept structured parameters for provider and endpoint
* refactor: streamline requestFiles handling in initializeAgent function
* fix: getEndpointFileConfig partial config merging scenarios
* refactor: enhance mergeWithDefault function to support document-supported providers with comprehensive MIME types
* refactor: user-configured default file config in getEndpointFileConfig
* fix: prevent file handling when endpoint is disabled and file is dragged to chat
* refactor: move `getEndpointField` to `data-provider` and update usage across components and hooks
* fix: prioritize endpointType based on agent.endpoint in file filtering logic
* fix: prioritize agent.endpoint in file filtering logic and remove unnecessary endpointType defaulting
* chore: remove all bing code
* chore: remove bing code and auto-focus effects
* chore: add back escapeRegExp helper function for regex special character handling
* chore: remove deprecated fields from settings and conversation schema
* fix: ensure default endpoint is set correctly in conversation setup
* feat: add disableFocus option to newConversation for improved search behavior
* fix(TEndpointsConfig): resolve property access issues with typesafe helper function
* fix: undefined or null endpoint edge case
* refactor(mapEndpoints -> endpoints): renamed module to be more general for endpoint handling, wrote unit tests, export all helpers
