Fix: Normalize userId to integer in POST/PUT requestsFix: Normalize userId to integer in POST/PUT requests #217
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When using the /posts endpoint:
GET /posts/1 returns userId as an integer:
{ "userId": 1, ... }
POST /posts with userId=1 returns it as a string:
{ "userId": "1", ... }
This causes issues in strictly typed languages like Swift or TypeScript.
Suggested fix: Normalize userId as an integer across all responses.
Fixes: #217