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/.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,24 @@
+---
+name: Bug report（报告问题）
+about: Create a report to help us improve
+---
+
+<!--
+    注意：为更好的解决你的问题，请参考模板提供完整信息，准确描述问题，信息不全的 issue 将被关闭。
+
+    Note: In order to better solve your problem, please refer to the template to provide complete information, accurately describe the problem, and the incomplete information issue will be closed.
+-->
+
+# Bug report（问题描述）
+
+写清楚 unibest 版本号，平台是什么（小程序、APP还是h5），以及具体问题描述。期望是什么，实际是什么。
+
+## Steps to reproduce（问题复现步骤）
+
+这里写问题复现步骤
+
+<!--
+1. [xxx]
+2. [xxx]
+3. [xxxx]
+-->