# Design QA

- Source visual truth: `/workspace/scratch/6e52996114b8/upload/f7dbeb9e-a47c-4e09-9b5c-c5f885b0d708.png`
- Source pixel dimensions: `543 × 978`.
- Browser-rendered open-state comparison: `/workspace/scratch/mobile-sidebar-open-comparison-20260908.jpg`
- Browser-rendered closed-state comparison: `/workspace/scratch/mobile-sidebar-closed-comparison-20260908.jpg`
- Comparison screenshot dimensions: `1363 × 936`.
- Implementation CSS viewport: `543 × 936`, device scale factor `1`.
- Density normalization: source and implementation are both displayed at `543px` CSS width; the source's bottom `42px` is outside the comparison viewport and contains no sidebar structure needed for this review.
- State: dark-theme project list, with the mobile navigation captured both open and closed.

## Full-view comparison evidence

The source shows a permanently visible `48px` navigation rail that reduces the project-content width. The revised closed state removes that rail entirely: browser geometry reports the main region at `543px`, equal to the `543px` iframe viewport. The top-left control is now a menu icon and the project list uses the full available width.

The revised open state shows the same navigation as a `543 × 936` fixed full-screen layer. Brand, navigation items and the bottom backend entry remain vertically separated, while an explicit close icon is available in the navigation header.

## Focused region comparison evidence

A separate crop was not needed because both states are rendered at 1:1 CSS width in the full-view comparison and the header controls, navigation item, content boundary and footer action remain readable.

## Required fidelity surfaces

- Fonts and typography: existing font family, sizes, weights and truncation behavior are preserved. The drawer uses the same brand and menu typography as the desktop sidebar.
- Spacing and layout rhythm: the closed state removes the previous `48px` content offset. The open state uses the full viewport and preserves the existing header, menu and footer spacing.
- Colors and visual tokens: the drawer continues to use `--app-subtle`, existing selected-menu colors and the current dark-theme tokens.
- Image quality and asset fidelity: no raster assets were added or altered. Menu and close actions use the project's existing Lucide icon package.
- Copy and content: brand, “我的剧本” and “后端连接” labels are unchanged.

## Findings

- No actionable P0/P1/P2 visual or responsive issues remain.
- The disconnected local backend produces the expected in-page `502` status in the closed-state project list; it does not affect the navigation layout or interaction.

## Primary interactions tested

- Opened the full-screen navigation from the new menu button.
- Closed the navigation from its internal close button.
- Confirmed the hidden navigation is removed from the accessibility tree with `aria-hidden` and `inert`.
- Confirmed the closed-state main content width equals the mobile viewport width.
- Confirmed desktop behavior remains covered by the existing layout component tests.

## Console errors checked

No application-origin console errors were reported. The cloud browser logged only its own extension metadata messages; these are outside the application.

## Comparison history

- Iteration 1: replaced the persistent mobile rail with a fixed full-screen navigation and added the menu/close icon pair.
- Iteration 2: verified the open state at `543 × 936`, then closed it through the internal action and verified the content region expanded to the full `543px` viewport width.

## Implementation checklist

- [x] Hide the mobile navigation without reserving horizontal space.
- [x] Open navigation as a full-screen fixed layer.
- [x] Replace the top toggle glyph with a menu icon.
- [x] Provide an internal close control while the top bar is covered.
- [x] Preserve automatic close on mobile route changes, settings open and Escape.
- [x] Preserve desktop collapse/expand behavior.

final result: passed