## Fixed Issues ### Root Cause 1: parseThinkingContent.ts (Line 69) The regex `answer.replace(/\s+/g, ' ')` was replacing ALL whitespace (including newlines) with single spaces, destroying markdown formatting. **Fix**: Changed to preserve newlines by: - Splitting by newlines, collapsing only multiple spaces within each line - Rejoining with newlines preserved - Collapsing 3+ consecutive newlines to 2 ### Root Cause 2: AIAnswer.tsx (Lines 348-349) ThinkingSection was being rendered with `expanded={isThinkingStreaming}`. When you pass `expanded` prop, ThinkingSection enters controlled mode. Once streaming stops, `isThinkingStreaming=false` means `expanded=false`, and users cannot manually toggle. **Fix**: Removed the `expanded` prop entirely, allowing ThinkingSection to manage its own internal state. The component already auto-expands during streaming and auto-collapses when done, but now users can manually re-expand. ## Files Changed - `src/src/utils/parseThinkingContent.ts`: Line 69-75 - Preserve newlines instead of collapsing all whitespace - `src/src/components/organisms/AIAnswer/AIAnswer.tsx`: Lines 344-354 - Remove controlled mode, add explanatory comments ## Verification - All 28 parseThinkingContent unit tests pass - All 61 ThinkingSection tests pass - Frontend rebuilt and deployed to production (bundle: index-Ce5G8VfY.js) ## Expected Behavior Now 1. Newlines preserved in both thinking and answer content 2. Markdown rendered correctly (RichTextRenderer parses by newlines) 3. ThinkingSection can be manually expanded after auto-collapse