Make your coding agent
understand your repo.

# Client portal — Agent task brief

## Outcome
Add passwordless sign-in without changing the existing email/password flow.

## Context
- Primary stack: TypeScript / React
- Risk profile: Medium
- First inspect the smallest relevant surface and state any material assumptions.

## Guardrails
- Call out assumptions before editing. Add focused regression coverage and keep rollback simple.
- Preserve unrelated behavior and existing user changes.
- Prefer the smallest complete implementation over speculative refactors.

## Definition of done
- The requested behavior works on the primary path.
- Relevant edge cases and failure states are covered.
- Build, types, and focused tests pass.
- The handoff explains what changed, what was verified, and any residual risk.