feat: URL-first CLI + auto-setup for new targets

- python -m scanner https://domain.de scan  (URL as first positional arg)
- On first use, the domain directory is auto-created from the
  meine-seite.de template with all paths and target URL substituted
- scanner.sh wrapper script for convenient ./scanner.sh usage
- --config syntax fully preserved (cron jobs unchanged)

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

scanner/__main__.py

@@ -2,7 +2,8 @@
 integrity-scanner — CLI entry point.
 
 Usage:
-    python -m scanner <subcommand> [options]
+    python -m scanner <URL> <subcommand> [options]
+    python -m scanner --config <site>/config.yaml <subcommand> [options]
 
 Subcommands:
     init      First-time crawl + baseline setup workflow
@@ -16,6 +17,8 @@ Subcommands:
 import argparse
 import json
 import logging
+import re
+import shutil
 import sys
 from datetime import datetime, timezone
 from pathlib import Path
@@ -1327,9 +1330,66 @@ def _build_parser() -> argparse.ArgumentParser:
 # Main
 # ---------------------------------------------------------------------------
 
+def _auto_setup(url: str, domain: str) -> None:
+    """Create a new target directory from the meine-seite.de template."""
+    project_root = Path(__file__).parent.parent
+    template_dir = project_root / "meine-seite.de"
+    target_dir   = project_root / domain
+
+    if not template_dir.exists():
+        print(
+            f"[scanner] Fehler: Template-Verzeichnis '{template_dir}' nicht gefunden.\n"
+            f"[scanner] Bitte sicherstellen, dass 'meine-seite.de/' im Projektverzeichnis existiert.",
+            file=sys.stderr,
+        )
+        sys.exit(1)
+
+    target_dir.mkdir(parents=True, exist_ok=True)
+
+    config_dst = target_dir / "config.yaml"
+    if not config_dst.exists():
+        content = (template_dir / "config.yaml").read_text(encoding="utf-8")
+        # Absolute Pfade anpassen
+        content = content.replace(
+            str(project_root / "meine-seite.de"),
+            str(project_root / domain),
+        )
+        # URL und Domain ersetzen
+        content = content.replace("https://meine-seite.de", url.rstrip("/"))
+        content = content.replace("meine-seite.de", domain)
+        config_dst.write_text(content, encoding="utf-8")
+
+    config_src_dir = template_dir / "config"
+    config_dst_dir = target_dir / "config"
+    if config_src_dir.exists() and not config_dst_dir.exists():
+        shutil.copytree(config_src_dir, config_dst_dir)
+
+    print(f"[scanner] Neues Target angelegt: {target_dir}")
+    print(f"[scanner] Bitte .gitignore ergänzen:")
+    print(f"[scanner]   {domain}/data/")
+    print(f"[scanner]   {domain}/reports/")
+    print(f"[scanner]   {domain}/logs/")
+    print()
+
+
 def main() -> None:
+    argv = list(sys.argv[1:])
+
+    # URL-first syntax: scanner https://domain.de scan [options]
+    if argv and re.match(r"https?://", argv[0]):
+        url = argv.pop(0)
+        domain = urlparse(url).netloc
+        if not domain:
+            print(f"[scanner] Fehler: Ungültige URL: {url}", file=sys.stderr)
+            sys.exit(1)
+
+        if not Path(domain).exists():
+            _auto_setup(url, domain)
+
+        argv = ["--config", str(Path(domain) / "config.yaml")] + argv
+
     parser = _build_parser()
-    args = parser.parse_args()
+    args = parser.parse_args(argv)
 
     cfg = load_config(args.config)
     base_dir = Path(args.config).parent.resolve()