prepare app for public app store distribution

- rebrand from 습관 트래커 to 해빗랩 across templates, manifest, service worker
- add HTTPS redirect middleware for reverse-proxied deployments
- add public landing page (/) and privacy policy page with real data
  handling disclosures
- add in-app account deletion (Apple review requirement)
- add Android TWA Digital Asset Links support (/.well-known/assetlinks.json)
- add SFTP deployment script for the Synology-hosted server

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

pyproject.toml

@@ -25,6 +25,7 @@ dependencies = [
 dev = [
     "pytest>=8.0",
     "pillow>=10.0",  # scripts/generate_icons.py 아이콘 재생성용 (런타임 미사용)
+    "paramiko>=3.4",  # scripts/deploy_sftp.py SFTP 배포용 (런타임 미사용)
 ]
 
 [tool.setuptools.packages.find]