mercadodevida/work/artifacts/F-085/architect.md

F-085 — Architect: /tax-rates TIPO column is not editable

Root cause

/admin/tax-rates PATCH route (project/src/modules/pricing/api/pricing.routes.ts) only accepts { name, ratePercent, active }; appliesTo is not in the body schema and not written to the DB. The admin page renders the column as plain <td>{r.appliesTo}</td>.

Design

1. Extend the PATCH body Zod schema with appliesTo: z.enum(['general','reduced','super-reduced']).optional(). Server validates the value against the enum (no DB constraint, but rejection is fast and the error message is clear).
2. Add a new UPDATE branch for applies_to mirroring the existing ones.
3. In the admin page, the TIPO cell is now click-to-edit:
   • Click <button> → switches to a <select autoFocus> with the three valid values.
   • On change, if the new value differs, fire PATCH immediately and close edit mode.
   • On blur, if value still equals the original, just close; if different and change already fired, no-op.
4. Success path updates the row in-place (rates.map(...)).

Risk

Low. Server-side enum validation; no SQL injection; no new deps.

Acceptance mapping

• "TIPO cell enters edit mode on click and shows a select with allowed types" → button → select.
• "Selecting a new type and confirming triggers PATCH /tax-rates/:id" → onChange path.
• "Invalid types are rejected client and server side" → Zod enum on server; select restricts client.
• "Successful change is reflected without a full page reload" → in-place state update.
• "verify.sh is green" → typecheck + lint clean.