fix: 将侧栏提示层移到导航外侧

将桌面折叠侧栏的 NPopover 显式挂载到 body，并把提示框完整偏移到 64px 导航边界之外。

design-qa.md

@@ -1,42 +1,41 @@
 # Design QA
 
-- Source visual truth: `/workspace/scratch/6e52996114b8/upload/6c29987c-43a6-4ded-ba86-b66d1c638f51.png`
-- Source pixel dimensions: `151 × 506`.
-- Browser-rendered implementation: `/workspace/scratch/6e52996114b8/sidebar-popover-pc-final-20260909.jpg`
+- Source visual truth: `/workspace/scratch/6e52996114b8/upload/28e7be72-5b24-4b86-bae5-d0d4eb1015e2.png`
+- Source pixel dimensions: `151 × 381`.
+- Browser-rendered implementation: `/workspace/scratch/6e52996114b8/sidebar-popover-outside-20260909.jpg`
 - Browser-rendered implementation dimensions: `1363 × 936`.
-- Focused side-by-side comparison: `/workspace/scratch/6e52996114b8/sidebar-popover-comparison-final-20260909.jpg`
+- Focused side-by-side comparison: `/workspace/scratch/6e52996114b8/sidebar-popover-outside-comparison-20260909.jpg`
 - Implementation CSS viewport: `1363 × 936`, device scale factor `1`.
 - State: PC dark theme, collapsed sidebar, pointer hovering the disabled “视觉风格” icon.
 
 ## Full-view comparison evidence
 
-The implementation preserves the existing collapsed sidebar width, icon order, selected state and main-content boundary. Hovering an icon opens a compact Naive UI popover to the right without shifting the sidebar or content.
+The browser render keeps the `64px` collapsed navigation rail unchanged. The visible popover is teleported to `body`, rendered above the content layer, and no longer begins inside the sidebar boundary.
 
 ## Focused region comparison evidence
 
-The focused comparison places the supplied sidebar crop beside a `320 × 506` crop of the browser render. The source icon spacing, dark surfaces and green selected state remain unchanged. The implementation adds the requested hover label beside the icon; disabled workflow items use the explanatory suffix “（剧本完成后可用）”.
+The focused comparison places the supplied crop beside a `320 × 381` crop of the revised browser render. The source's red annotation identifies the content-side area beside the collapsed rail. Browser geometry confirms the sidebar ends at `x = 64px` and the popover body begins at `x = 65px`, leaving the body fully outside the sidebar while its arrow still points back to the icon.
 
 ## Required fidelity surfaces
 
-- Typography: the application typography is unchanged; popover copy uses the current Naive UI theme and compact UI text sizing.
-- Spacing and layout rhythm: the `64px` collapsed sidebar and existing vertical menu rhythm are preserved. Popovers use `placement="right"` and do not alter document flow.
-- Colors and visual tokens: dark sidebar surfaces and the selected green state remain unchanged. Popovers inherit the existing dark Naive UI theme.
-- Image and asset fidelity: no raster assets were introduced. Existing Lucide menu icons are preserved.
-- Copy and content: PC hints use each menu's existing label. Locked entries append “（剧本完成后可用）”; “后端连接” keeps its original copy.
+- Typography: existing application and Naive UI popover typography are unchanged.
+- Spacing and layout rhythm: the `64px` sidebar and icon rhythm remain unchanged. The popover's total inline-start margin is `24px`, producing a measured `1px` gap outside the sidebar edge.
+- Colors and visual tokens: dark surfaces, selected green state and popover theme tokens remain unchanged.
+- Image and asset fidelity: no raster or icon assets were added or modified.
+- Copy and content: menu labels and locked-state explanation remain unchanged.
 
 ## Findings
 
 - No actionable P0/P1/P2 visual or responsive issues remain.
-- The disconnected local backend produces the expected in-page `502` response; it does not affect sidebar layout or popover behavior.
+- The disconnected local backend produces the expected in-page `502` response; it does not affect popover positioning.
 
 ## Primary interactions tested
 
-- Collapsed the PC sidebar and hovered an enabled menu icon; “我的剧本” appeared.
-- Hovered the disabled “视觉风格” icon; its availability explanation appeared.
-- Hovered the bottom settings icon; “后端连接” appeared.
-- Clicked an enabled collapsed icon and confirmed navigation to the target workflow route.
-- Expanded the PC sidebar and confirmed menu popovers were absent.
-- Confirmed through component tests that mobile navigation does not render menu popovers.
+- Collapsed the PC sidebar and hovered the “视觉风格” icon.
+- Confirmed the popover content remained readable and the arrow still targeted the icon.
+- Measured the sidebar and popover body bounds to confirm the popover starts outside the sidebar.
+- Confirmed the popover is explicitly mounted to `body` with a high overlay level.
+- Confirmed component tests continue to cover desktop-only popover rendering.
 
 ## Console errors checked
 
@@ -44,15 +43,16 @@ No application-origin console errors were reported. The cloud browser logged onl
 
 ## Comparison history
 
-- Iteration 1: added native NPopover wrappers and found that the full-width transparent RouterLink intercepted hover on enabled menu icons.
-- Iteration 2: made enabled collapsed icons direct RouterLinks, raised their trigger layer above the transparent label and rechecked enabled, disabled and settings hints in the browser.
+- Iteration 1: the popover body began at `x = 51px` while the sidebar ended at `x = 64px`, leaving a `13px` overlap (P2).
+- Fix: mounted the popover explicitly to `body`, raised its overlay level, and overrode Naive UI's default inline margin in the component style.
+- Iteration 2: the revised browser render measured the popover body at `x = 65px`, a `1px` gap outside the sidebar edge, with no remaining P0/P1/P2 issue.
 
 ## Implementation checklist
 
-- [x] Add NPopover hints to all PC collapsed sidebar menu icons.
-- [x] Preserve click navigation for enabled collapsed icons.
-- [x] Explain locked workflow items in their hint copy.
-- [x] Keep PC expanded and mobile navigation free of duplicate popovers.
-- [x] Preserve sidebar size, spacing, theme and selected state.
+- [x] Place the PC sidebar popover outside the collapsed rail.
+- [x] Keep the arrow aligned with the hovered icon.
+- [x] Prevent business content from covering the popover.
+- [x] Keep existing sidebar spacing, colors, icons and copy.
+- [x] Preserve desktop-only popover behavior.
 
 final result: passed