- CI workflow: replace hardcoded branch list with ['**'] wildcard so
pipeline runs on every branch push, not just 4 named branches.
- Sitemap/robots.txt: moved from static files to dynamic generation.
New sitemap_export.py module (follows theme_export.py pattern) uses
KMTN_WEBSITE_URL to generate tenant-aware sitemap.xml and robots.txt
on app startup. Atomic writes to STATIC_FILES_DIR so Nginx serves them.
- Added /api/sitemap endpoint with /status (public) and /regenerate
(admin-only) for runtime control.
Addresses reviewer comments on PR #4:
1. 'more general way to ensure this runs on any branch on push'
2. 'whitelabel app - this file may need to be dynamically generated'
