fix: resolve typecheck errors across the repository

[Harxhit]

Summary

Resolved repository typecheck issues related to card routes and services. Updated error handling in card deletion flows and aligned tests with the current service behavior to ensure consistent API responses.

Closes #

---

Type of Change

• Bug fix
• New feature
• Refactor (no functional change)
• UI / Design change
• Tests only
• Documentation
• Infrastructure / DevOps
• Security

---

What Changed

• Updated src/services/cardService.ts to improve delete-card error handling and service behavior.
• Updated src/routes/cards.ts to properly map service-level errors (NOT_FOUND, LAST_CARD) to HTTP responses.
• Updated src/__tests__/cards.test.ts to validate the revised delete-card behavior and ensure typecheck/test compatibility.

---

How to Test

1. Run npm run typecheck and verify there are no TypeScript errors.

2. Run npm run test src/__tests__/cards.test.ts and verify all card route tests pass.

3. Test card deletion scenarios:

   • Delete a non-existent card and verify a 404 response.
   • Attempt to delete the last remaining card and verify a 400 response.
   • Delete a valid card and verify a 204 response.

---

Checklist

• My code follows the project's coding style.
• TypeScript compiles without errors.
• I have added or updated tests for the changes I made.
• All tests pass locally.
• I have updated documentation where necessary.
• No new console.log or debug statements left in the code.
• Breaking changes are documented in this PR description.

---

Additional Context

These changes were made as part of repository-wide typecheck cleanup and to ensure route handlers correctly translate service-layer errors into appropriate HTTP responses.

[vercel]

@Harxhit is attempting to deploy a commit to the Prashantkumar Khatri's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

CI — All Checks Passed

Backend — PASS

Check	Result
Lint	PASS
Test	PASS
Typecheck	PASS

Mobile — SKIP

Check	Result
Lint	-
Test	-

Web — SKIP

Check	Result
Check	-
Build	-

---

Last updated: Sun, 07 Jun 2026 16:20:13 GMT