Add /ping endpoint for deployment verification

[Copilot]

This PR adds a simple /ping endpoint that returns a 200 response with a JSON message to enable deployment verification for the SafeDose application.

Implementation

The new endpoint follows the existing API pattern established by /api/hello.js:

• Endpoint: /api/ping
• Method: Accepts any HTTP method
• Response: HTTP 200 with JSON payload

{
  "message": "pong",
  "status": "ok", 
  "timestamp": "2025-09-12T16:35:06.727Z"
}

Files Added

• api/ping.js - Main endpoint implementation following the serverless function pattern
• api/ping.test.js - Comprehensive test suite with 4 test cases

Features

• Deployment Verification: Provides reliable health check for deployment pipelines
• Timestamp: Includes server timestamp for deployment timing verification
• Status Indicator: Explicit "ok" status for programmatic verification
• Consistent Pattern: Uses the same structure as existing API endpoints
• Vercel Compatible: Works seamlessly with the existing Vercel serverless function configuration

Testing

All tests pass successfully:

• ✅ Returns 200 status code
• ✅ Provides required JSON fields
• ✅ Generates valid timestamps
• ✅ Suitable for deployment verification workflows

The endpoint integrates with the existing vercel.json routing configuration and will be automatically deployed as a serverless function accessible at /api/ping.

Fixes #372.

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Project	Deployment	Preview	Comments	Updated (UTC)
safe-dose	Ready	Preview	Comment	Sep 12, 2025 4:37pm