[QA] ✅ VERIFIED - All requirements met ## Verification Summary - ✅ Icon.stories.tsx: brain icon added to StatusIcons (5 icons) and AllIcons - ✅ All missing icons added to argTypes and AllIcons story - ✅ ModeInfoPanel.stories.tsx: ReasoningMode story exists, AllModes shows 3 modes - ✅ SearchInputWithModes.stories.tsx: ReasoningMode story exists - ✅ HomeSearchBar.stories.tsx: reasoning mode supported (no LabsMode) - ✅ Zero LabsMode story exports found across all story files - ✅ npm run build-storybook: Build completed successfully - ✅ npm run storybook: Dev server started successfully on port 6006 ## Test Results - Storybook build: ✅ Success (18.59s, 1133 modules) - Storybook dev server: ✅ Started (manager: 2.03s, preview: 676ms) - LabsMode search: ✅ Zero matches - All acceptance criteria: ✅ Met Detailed QA report: /tmp/qa-PPLX-91.md

## Fix Summary ### Issue Requirements Update Storybook stories to replace Labs with Reasoning mode examples. ### Investigation Findings The three main story files mentioned in the ticket were **already correctly updated** in previous work: - `HomeSearchBar.stories.tsx`: Already uses `reasoning` mode correctly - `ModeInfoPanel.stories.tsx`: Already has `ReasoningMode` story, `AllModes` shows all 3 modes correctly - `SearchInputWithModes.stories.tsx`: Already has `ReasoningMode` story However, `Icon.stories.tsx` needed updates to include the `brain` icon (used for reasoning mode). ### Changes Made **File: `src/src/components/atoms/Icon/Icon.stories.tsx`** 1. **StatusIcons story** (line 379-409): Updated to include `brain` icon and reorganized to show: `research`, `brain`, `answer`, `sparkle`, `labs` (5 icons instead of 4) 2. **argTypes options**: Added all missing icons including: - `brain` (reasoning mode icon) - `rewrite`, `thumb-up`, `thumb-down`, `shuffle`, `lightbulb`, `info` - `camera`, `voice-mode`, `submit-arrow` - `clock`, `logout` 3. **AllIcons story**: Updated to include all icons that exist in `Icon.tsx` including `brain` ### Verification - `npm run build-storybook` completes successfully - No `LabsMode` story exports exist in any component - All three main story files have `ReasoningMode` stories - AllModes/Interactive stories show correct 3 modes (search, research, reasoning) ### Test Results Pre-existing test failures (302 tests using `jest.fn()` instead of `vi.fn()`) are unrelated to this change. Only `Icon.stories.tsx` was modified.