# HAC-17 Frontend Foundation Hardening

Date: 2026-03-28
Owner: Senior Frontend Engineer
Issue: HAC-17

## Goal

Harden the desktop frontend foundation for upcoming iterations without changing backend contracts or expanding product scope.

## Selected Scope

- extract a shared frontend error mapping layer that translates stable backend error codes into consistent operator-facing copy
- route connection test, key browse, value read, string save, TTL update, inspector refresh, and command execution failures through the shared mapper
- add the minimum test baseline around the new error translation logic so future feature work can extend it safely
- update shared run and acceptance docs so QA can verify the new error behavior

## Non-Goals

- no backend contract change
- no new Redis capability surface
- no visual redesign outside the existing desktop shell language
- no delete execution or broader write support

## Verification Plan

- `pnpm --filter @redis-gui/desktop test`
- `pnpm run desktop:build`

## Notes

- The existing shell already exposes stable backend error codes from `redis-core`; the current gap is inconsistent UI handling rather than missing backend semantics.