add unibest app skeleton with checkin and progress pages

- init unibest v4.4.0 base template
- tabbar: 4 tabs (打卡/进度/测算/持仓) with carbon icons
- pages/checkin: daily checklist, streak counter, monthly rate
- pages/progress: asset snapshot, progress bar to 71万 target
- pages/calculator, holdings: placeholder pages (stage 2)
- store/checkin.ts + store/progress.ts with pinia persist
- vite: host 0.0.0.0 for WSL2→Windows browser access

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/.editorconfig

@@ -0,0 +1,13 @@
+root = true
+
+[*] # 表示所有文件适用
+charset = utf-8 # 设置文件字符集为 utf-8
+indent_style = space # 缩进风格（tab | space）
+indent_size = 2 # 缩进大小
+end_of_line = lf # 控制换行类型(lf | cr | crlf)
+trim_trailing_whitespace = true # 去除行首的任意空白字符
+insert_final_newline = true # 始终在文件末尾插入一个新行
+
+[*.md] # 表示仅 md 文件适用以下规则
+max_line_length = off # 关闭最大行长度限制
+trim_trailing_whitespace = false # 关闭末尾空格修剪