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.

backend/compose.yaml

@@ -32,6 +32,8 @@ services:
       PGUSER: ${PGUSER:?Set PGUSER in .env}
       PGPASSWORD: ${PGPASSWORD:?Set PGPASSWORD in .env}
       PGSSLMODE: disable
+      WECHAT_APP_ID: ${WECHAT_APP_ID:-}
+      WECHAT_APP_SECRET: ${WECHAT_APP_SECRET:-}
     ports:
       - "${API_BIND:-127.0.0.1}:${API_PORT:-8080}:8080"
     depends_on: