---
phase: 10-content-clarity
plan: "02"
subsystem: wizard-ui
tags: [live-preview, ux, form-fields, tdd]
dependency_graph:
  requires: []
  provides: [RemoteNamePreview component, live config preview in BackendSelectionStep]
  affects: [src/components/wizard/BackendSelectionStep.tsx]
tech_stack:
  added: []
  patterns: [stateless display component, react-hook-form watch(), TDD red-green]
key_files:
  created:
    - src/components/ui/RemoteNamePreview.tsx
    - src/components/ui/RemoteNamePreview.test.tsx
  modified:
    - src/components/wizard/BackendSelectionStep.tsx
    - src/components/wizard/BackendSelectionStep.test.tsx
    - src/components/wizard/RemoteConfigStep.test.tsx
decisions:
  - "RemoteNamePreview renders only div/span — no form controls, preserving single-textbox selector contract"
  - "watch('name') from useForm used for live preview — no useWatch, per plan spec"
  - "helpText uses full sentence explaining rclone.conf syntax and naming constraints"
metrics:
  duration_minutes: 8
  tasks_completed: 2
  files_created: 2
  files_modified: 3
  completed_date: "2026-04-01"
requirements_satisfied: [UX-02]
---

# Phase 10 Plan 02: Live Remote Name Preview Summary

**One-liner:** Stateless RemoteNamePreview component with empty/value states integrated into BackendSelectionStep via watch('name') and enriched with helpText.

## Tasks Completed

| # | Task | Commit | Status |
|---|------|--------|--------|
| 1 | Create RemoteNamePreview component with TDD | 3c9c5fd | Done |
| 2 | Integrate RemoteNamePreview and helpText into BackendSelectionStep | fefab65 | Done |

## What Was Built

**RemoteNamePreview component** (`src/components/ui/RemoteNamePreview.tsx`):
- Stateless functional component accepting `{ value: string }`
- Empty/whitespace state: displays grayed `[my-remote]` placeholder with "Type a name to see how it appears in your config" guidance
- Value state: displays `[typed-value]` in on-surface-variant color
- Container styling: `mt-2 rounded-md bg-surface-variant px-3 py-2 text-xs font-mono`
- Renders only div/span elements — never form controls

**BackendSelectionStep integration**:
- Added `watch` to useForm destructure
- Added `const remoteName = watch('name')` for reactive updates
- Added `helpText` prop to remote name TextFieldMD3: full sentence explaining rclone.conf [name] syntax
- Added `<RemoteNamePreview value={remoteName} />` below the TextFieldMD3
- Note: description paragraph and RemoteNamePreview import were committed as part of Plan 10-01 linter sweep (commit 4b837b1)

## Tests

- `RemoteNamePreview.test.tsx`: 9 tests (empty state x3, value state x3, element type constraints x3)
- `BackendSelectionStep.test.tsx`: 2 new integration tests (empty-state placeholder, live update on type)
- Full suite: 202 tests pass

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 1 - Bug] Fixed getByText(/required/i) ambiguity in BackendSelectionStep.test.tsx**
- **Found during:** Task 2
- **Issue:** New description paragraph ("...credentials are required in the next step") caused `getByText(/required/i)` to match two elements, breaking existing "shows inline error" test
- **Fix:** Changed to `screen.getByRole('alert').textContent.toMatch(/required/i)` for precise alert text assertion
- **Files modified:** `src/components/wizard/BackendSelectionStep.test.tsx`
- **Commit:** fefab65

**2. [Rule 1 - Bug] Fixed getByLabelText ambiguity in RemoteConfigStep.test.tsx**
- **Found during:** Task 2 (full suite run)
- **Issue:** Linter-added paragraphs in RemoteConfigStep, combined with partial `{ selector: 'input' }` fix from 10-03 commits, left GCS, B2, and S3-region VALID-01 tests failing with "Found multiple elements"
- **Fix:** Added `{ selector: 'input' }` to all remaining `getByLabelText` calls in BACK-03, BACK-04, and VALID-01 sections
- **Files modified:** `src/components/wizard/RemoteConfigStep.test.tsx`
- **Commit:** fefab65 (included in Task 2 commit via linter application)

## Self-Check: PASSED

- src/components/ui/RemoteNamePreview.tsx: FOUND
- src/components/ui/RemoteNamePreview.test.tsx: FOUND
- Commit 3c9c5fd (Task 1): FOUND
- Commit fefab65 (Task 2): FOUND