Abhinav/bra2 932 chat embeddable client component support

[Nauxie]

Note

Updates default engine URL to the deployments service and centralizes its usage by importing it in ChatWidget.

• API Client (src/api/client.ts):
  • Config: Export DEFAULT_ENGINE_URL pointing to https://deployments-z71a.onrender.com.
• UI (src/components/ChatWidget/ChatWidget.tsx):
  • Config: Import and use DEFAULT_ENGINE_URL from api/client instead of a local constant to standardize the default base URL.

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[greptile-apps]

Greptile Summary

Centralized the DEFAULT_ENGINE_URL constant by exporting it from src/api/client.ts and removing the duplicate definition in ChatWidget.tsx, updating the URL from WhatsApp server to deployments server.

• Exported DEFAULT_ENGINE_URL from api/client.ts for reuse across components
• Updated engine URL from whatsapp-based-server.onrender.com to deployments-z71a.onrender.com
• Removed duplicate constant definition in ChatWidget.tsx, now imports from centralized location
• Added clear TODO comment indicating the URL is temporary pending chat embed deployment service
• Updated localhost port from 8000 to 8003 in commented fallback

Confidence Score: 5/5

• This PR is safe to merge with no risk
• Simple refactoring that centralizes a constant, eliminates duplication, and follows DRY principles. No logic changes, no new dependencies, and the URL update appears intentional with clear documentation.
• No files require special attention

Important Files Changed

Filename	Overview
src/api/client.ts	Exported DEFAULT_ENGINE_URL constant and updated URL to deployments server with clear TODO comment
src/components/ChatWidget/ChatWidget.tsx	Removed duplicate URL constant, now imports from centralized location in client.ts

Sequence Diagram

sequenceDiagram
    participant CW as ChatWidget Component
    participant AC as api/client.ts
    participant Server as Deployments Server

    Note over AC: DEFAULT_ENGINE_URL<br/>exported constant
    
    CW->>AC: Import DEFAULT_ENGINE_URL
    CW->>AC: Call createAPIClient(apiBaseUrl)
    AC->>AC: Use DEFAULT_ENGINE_URL as default
    
    Note over CW,Server: Configuration Fetch
    CW->>AC: apiClient.getDeploymentConfig(embedId)
    AC->>Server: GET /chat/config/{embed_id}
    Server-->>AC: Return config (agentName, primaryColor, etc.)
    AC-->>CW: Return DeploymentConfig
    
    Note over CW,Server: Message Sending
    CW->>AC: apiClient.sendMessage(params)
    AC->>Server: POST /chat/message
    Server-->>AC: Stream response (SSE)
    AC-->>CW: Return ReadableStream

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