Initial commit: PDF OCR Hotfolder v0.1.0

Komplettes Rewrite des alten Bash-Tools `pdf-tool` in Python.
- ocrmypdf als Library, watchdog für Hotfolder, ThreadPool für Parallelität
- Upload-Targets: folder, Nextcloud (WebDAV), SFTP
- E-Mail-Notify, optional veraPDF
- Interaktiver Installer mit Service-User-Support (lokal + AD via SSSD)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pdf_ocr_hotfolder/__main__.py

@@ -0,0 +1,57 @@
+"""CLI-Entrypoint."""
+from __future__ import annotations
+
+import argparse
+import logging
+import sys
+from pathlib import Path
+
+from . import __version__
+from .config import load_config
+from .service import HotfolderService
+
+
+def _setup_logging(level: str) -> None:
+    logging.basicConfig(
+        level=getattr(logging, level.upper(), logging.INFO),
+        format="%(asctime)s %(levelname)-7s %(name)s: %(message)s",
+        datefmt="%Y-%m-%d %H:%M:%S",
+    )
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(
+        prog="pdf-ocr-hotfolder",
+        description="Wandelt eingehende PDFs per OCR in durchsuchbare PDFs um.",
+    )
+    parser.add_argument("--config", "-c", default="/etc/pdf-ocr-hotfolder/config.toml",
+                        help="Pfad zur Konfigurationsdatei (TOML)")
+    parser.add_argument("--version", action="version", version=f"%(prog)s {__version__}")
+    parser.add_argument("--once", action="store_true",
+                        help="Nur bestehende Dateien verarbeiten und beenden")
+    args = parser.parse_args()
+
+    cfg_path = Path(args.config)
+    if not cfg_path.exists():
+        print(f"Config nicht gefunden: {cfg_path}", file=sys.stderr)
+        return 2
+
+    cfg = load_config(cfg_path)
+    _setup_logging(cfg.log_level)
+
+    service = HotfolderService(cfg)
+    if args.once:
+        service._ensure_dirs()  # noqa: SLF001
+        service._scan_existing()  # noqa: SLF001
+        service._executor.shutdown(wait=True)  # noqa: SLF001
+        return 0
+
+    try:
+        service.run()
+    except KeyboardInterrupt:
+        pass
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())