feat: add growth tracking page and related functionality

- Implemented a new Growth page to track practice time and trends.
- Added API integration for fetching review data.
- Created components for displaying practice statistics and trends.
- Updated navigation titles for the main index and growth pages.
- Removed unused styles from the index page.
- Introduced a Projects management page for adding and editing practice projects.
- Developed a Record form for logging practice sessions with validation.
- Added utility functions for date manipulation and duration formatting.
- Implemented error handling and session management in the practice service.
- Created unit tests for the practice service to ensure reliability.

.scratch/ballet-practice-v1/issues/07-ballet-knowledge-sources.md

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+# 哪些公开芭蕾知识来源适合建立动作目录？
+
+Type: research
+Labels: wayfinder:research
+Status: claimed
+Assignee: yuxuanhui
+Research agent: /root/ballet_knowledge
+Parent: [芭蕾岛产品规划：练习记录、语音录入与动作成长](../map.md)
+Blocked by: none
+
+## Question
+
+查找舞团、舞校、考试机构等公开的芭蕾动作术语来源，核实哪些适合作为动作名称、别名、分类和简短释义的参考。给出少量种子动作，区分术语目录与分级教学／掌握标准，说明法语及中文名称差异、访问与复用边界；不复制完整教材、不创建正式知识库，不替用户定义动作解锁规则。