fix(api): make /auth/health a conventional GET JSON endpoint

[Kingvic300]

Summary

auth_router registered health as POST("Welcome to txio") — a bare-string-as-handler that standard GET health probes never reach, duplicating the top-level GET /health (main.rs) with different semantics/wording.

Changes

• auth_router.rs: GET /api/v1/auth/health returning {"status":"ok"}.

Testing

• cargo check -p txio-api passes.

Closes #62

Summary by CodeRabbit

• Bug Fixes
  • Updated the health check endpoint to properly respond to standard monitoring requests with appropriate status information.

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Project	Deployment	Actions	Updated (UTC)
txio	Ready	Preview, Comment	Jun 7, 2026 11:52am

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: e2b252e9-f31f-4dd6-a038-f18fa82097f7

📥 Commits

Reviewing files that changed from the base of the PR and between a452e2f and 678541d.

📒 Files selected for processing (1)

• backend/api/src/api/routers/auth_router.rs

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📝 Walkthrough

Walkthrough

The auth router's /health endpoint is converted from an unconventional POST handler with a plain-text response to a standard GET handler returning JSON. Imports are adjusted to support Json serialization and the get HTTP verb. The public router function signature remains unchanged.

Changes

Health endpoint conversion

Layer / File(s)	Summary
Health endpoint GET handler with JSON response backend/api/src/api/routers/auth_router.rs	The /health route changes from post("Welcome to txio") to get(...) returning Json { "status": "ok" }. Axum imports are updated to include Json and get, and serde_json::json is imported to construct the response.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A health check hops with REST-ful grace,
No POST in this cozy place,
GET returns JSON, neat and bright,
{ "status": "ok" } — all's right! 🐰

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately and concisely describes the main change: converting the /auth/health endpoint from POST to GET with JSON response.
Linked Issues check	✅ Passed	The PR successfully addresses all requirements from issue #62: converts /auth/health from POST to GET, returns JSON instead of bare string, and aligns with conventional health check patterns.
Out of Scope Changes check	✅ Passed	All changes are directly scoped to fixing the /auth/health endpoint as specified in issue #62; no unrelated modifications are present.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/62-auth-health-route

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