feat: bootstrap NAS music deduper

am_deduper/cli.py

@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+import argparse
+from pathlib import Path
+
+from .exact import exact_dedupe
+from .scanner import scan
+from .watcher import watch
+
+
+def main() -> None:
+    p = argparse.ArgumentParser(prog="am-deduper")
+    sub = p.add_subparsers(dest="cmd", required=True)
+    for name in ("scan", "dedupe", "reconcile", "watch"):
+        sp = sub.add_parser(name)
+        sp.add_argument("root", type=Path)
+        sp.add_argument("--db", type=Path, default=None)
+    args = p.parse_args()
+    db = args.db or (args.root / ".dedupe" / "dedupe.db")
+    if args.cmd == "watch":
+        watch(args.root, db)
+        return
+    if args.cmd in {"scan", "reconcile"}:
+        print(f"indexed={scan(args.root, db)} db={db}")
+    if args.cmd == "dedupe":
+        scan(args.root, db)
+        actions = exact_dedupe(db, args.root)
+        print(f"hardlinked={len(actions)}")