RSS → ntfy bridge with modern web UI

Features: feed CRUD, per-feed ntfy target (incl. private servers),
Telegram/webhook channels, keyword filters, image attachments,
per-feed intervals, OPML import/export, notification history & stats,
users with roles, admin alerts, RU/EN i18n, light/dark theme,
notification preview, history search, activity chart. Dockerized.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

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+__pycache__/
+*.py[cod]
+.venv/
+venv/
+env/
+.env
+data/
+*.db
+*.sqlite3
+.DS_Store
+.idea/
+.vscode/
+.claude/