## Summary This PR adds user-friendly error handling for AI chat features, specifically for **billing credits exhausted** and **API key not configured** errors. ## Changes ### Backend - Added `BILLING_CREDITS_EXHAUSTED` exception code with 402 status - Added `API_KEY_NOT_CONFIGURED` exception code with 503 status - Added billing check before AI chat streaming in `agent-chat.controller.ts` - Added error code to HTTP exception response body for frontend error type detection - Created `AgentRestApiExceptionFilter` for agent-specific errors ### Frontend - Created `AIChatBanner` - reusable banner component for error/warning messages - Created `AIChatCreditsExhaustedMessage` - shows upgrade prompts based on user permissions - Created `AIChatApiKeyNotConfiguredMessage` - shows configuration guidance with docs link - Created `AIChatErrorRenderer` - encapsulates error type switching logic (fixes nested ternary) - Created `AIChatStandaloneError` - displays errors when there are no messages - Split `aiChatErrorUtils.ts` into separate files (1 export per file): - `AIChatErrorCode.ts` - `extractErrorCode.ts` - `isAIChatErrorOfType.ts` - `isBillingCreditsExhaustedError.ts` - `isApiKeyNotConfiguredError.ts` - Added comprehensive test coverage (27 tests) ### Other - Updated trial period banner messaging ## Testing - All lint checks pass - All 27 new tests pass - TypeScript typecheck passes
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Customize your objects and fields
Create and manage permissions with custom roles
Automate workflow with triggers and actions
Emails, calendar events, files, and more
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