Deployment dependency diagnostics

GET 
/api/v1/health/diagnostics

Run the on-demand deployment preflight diagnostic.

This is intentionally separate from /health/ready: readiness gates only the database and the cache so transient optional-service outages do not pull a live API out of rotation. Diagnostics are authenticated and admin-only.

Responses

200

Every required diagnostic check passed.

400

Bad request — malformed input or failed validation.

404

Resource not found, or hidden for tenant-enumeration safety (the caller lacks permission to know whether the resource exists).

409

Conflict — the current resource state does not allow this operation (e.g. assessment already started, email already in use).

422

Semantic validation failure — request shape was valid but contents were not.

429

Too many requests — rate limited. Retry after the window resets.

500

Internal server error — unexpected failure.

503

One or more required diagnostic checks failed.