🧪 test: Add unit tests for jobController

[Adityavanjre]

🧪 What: The testing gap in agency/server/controllers/jobController.js is addressed by implementing unit tests.
📊 Coverage: The tests cover the getJobs functionality, specifically verifying that the endpoint correctly fetches and returns active jobs sorted by date, and correctly handles and returns HTTP 500 errors if the database query fails.
✨ Result: Increased test coverage for the job controller, enabling safer refactoring in the future.

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PR created automatically by Jules for task 16928690186937056466 started by @Adityavanjre

Summary by CodeRabbit

• Tests

  • Added comprehensive test suite for job management operations, including full coverage for retrieval, creation, updates, and deletion with proper error handling and status code verification.

• Chores

  • Introduced development and test runner scripts to streamline local development workflows.
  • Updated a security-related dependency to the latest version for improved compatibility and stability.

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