Developer Assistant

Production is throwing 500s on the /api/users endpoint. Can you check?

I've pulled the latest logs. Found it — there's a null pointer in the user serialization layer. The `lastLogin` field is null for users who haven't logged in yet (new accounts from yesterday's migration). ``` TypeError: Cannot read property 'toISOString' of null at serializeUser (user.service.ts:47) ``` Fix is straightforward — add optional chaining: `user.lastLogin?.toISOString() ?? null` I've opened a PR with the fix + added a regression test. Want me to also check if there are other nullable timestamp fields we're missing?

Yes, audit all timestamp fields. And deploy the fix.

Fix deployed to staging → tests passing → promoting to production now. Timestamp audit complete. Found 2 more vulnerable fields: - `deletedAt` in soft-delete models (same pattern) - `verifiedAt` in email verification I've added null-safe handling for both in the same PR. Production deploy ETA: 3 minutes. I'll ping you when it's live and the 500s clear.