Add automated fix workflow for AI nutritionist page

- Create .fixes/ directory structure for tracking repairs
- Add FIX-001 to FIX-009 repair tasks based on Cursor review
- Add automation scripts (start-fix.sh, complete-fix.sh)
- Update HEARTBEAT.md with repair checklist
- Create AUTOMATION_PLAN.md with workflow documentation

Fixes address:
- Remove fake initial data
- Add clear chat button
- Split oversized component
- Optimize multi-image upload
- Fix scroll behavior
- Remove dead code
- Extract hardcoded config

msh_single_uniapp/.fixes/backlog/FIX-008-extract-config.md

@@ -0,0 +1,26 @@
+# FIX-008: 提取硬编码配置
+
+**状态**: 待开始  
+**创建时间**: 2026-02-28  
+**优先级**: 中  
+**负责人**: msh-agent  
+
+---
+
+## 问题描述
+
+`botId`、轮询次数(60/30)、轮询间隔(1000/2000)、最大录音 60s 等硬编码，建议提到 `data` 或单独 config。
+
+---
+
+## 修复方案
+
+创建配置对象集中管理：
+```javascript
+const CHAT_CONFIG = {
+    botId: '7591133240535449654',
+    maxPollAttempts: 60,
+    pollInterval: 1000,
+    maxRecordDuration: 60
+}
+```