Fix nginx deduplication: remove nginx/scripts/ entirely, fix README typos and dead references

TODO.md

@@ -7,3 +7,8 @@
 - [x] Create nginx/SETUP.md
 - [x] Create top-level SETUP.md
 - [x] Update documentation paths (/var/www/html/ → /var/www/posterg/, /formulaire/ → /admin/)
+- [x] Remove nginx/scripts/ entirely (install-php-sqlite.sh was duplicate, fix-paths.sh was stale, setup-password.sh superseded by manage-admin-users.sh)
+- [x] Fix typo HTACCESS_TO_ NGINX.md → HTACCESS_TO_NGINX.md in nginx/README.md
+- [x] Fix nginx/SETUP.md manual step to use just manage-admin-users instead of raw htpasswd
+- [x] Fix root README.md dead reference to docs/TODO.SECURITY.md
+- [x] Update root README.md project structure (remove nginx/scripts/ entry)