fix(cli): preserve notes during sync moves

- Leave sync and watch notes empty by default instead of writing placeholder text.
- Preserve existing remote notes when moving or adopting files without --note.
- Detect tracked local moves by SHA-256 and update remote metadata safely.
- Skip files that vanish during watch scans instead of aborting the sync cycle.
- Bump NanoShare to 1.24.0 and the standalone CLI to 0.3.0.

tests/test_nanoshare_cli.py

@@ -37,6 +37,8 @@ class FakeClient:
         if item['file_id'] == params['file_id']:
           item['file_name'] = params['file_name']
           item['file_path'] = params.get('file_path', '')
+          if 'note' in params:
+            item['note'] = params['note']
           return {'updated': True}
       return {'updated': False}
     if method == 'files.delete':
@@ -91,6 +93,47 @@ def test_sync_uploads_nested_local_files(tmp_path, monkeypatch):
   state = json.loads((tmp_path / '.nanoshare-sync' / 'state.json').read_text())
   assert state['files']['docs/notes/hello.txt']['file_id'] == 'file_1'
 
+def test_sync_updates_remote_path_when_tracked_file_moves(tmp_path, monkeypatch):
+  fake = FakeClient()
+  fake.remote_files = [{'file_id': 'file_1', 'file_name': 'old.txt', 'file_path': '', 'file_size': '5 Bytes'}]
+  monkeypatch.setattr(cli, 'make_client', lambda args: fake)
+
+  state_dir = tmp_path / '.nanoshare-sync'
+  state_dir.mkdir()
+  (state_dir / 'state.json').write_text(json.dumps({
+    'version': 1,
+    'files': {
+      'old.txt': {
+        'file_id': 'file_1',
+        'sha256': '2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824',
+        'local_mtime': 1,
+        'file_name': 'old.txt',
+        'file_path': '',
+      }
+    }
+  }))
+  nested = tmp_path / 'docs' / 'new.txt'
+  nested.parent.mkdir(parents=True)
+  nested.write_text('hello')
+
+  code = cli.main([
+    'sync',
+    '--url', 'picoshare=https://example.com',
+    '--token', 'token',
+    '--delete',
+    str(tmp_path),
+  ])
+
+  assert code == 0
+  assert fake.uploads == []
+  assert fake.deleted == []
+  assert fake.remote_files[0]['file_name'] == 'new.txt'
+  assert fake.remote_files[0]['file_path'] == 'docs'
+  assert 'note' not in fake.remote_files[0]
+  state = json.loads((state_dir / 'state.json').read_text())
+  assert 'old.txt' not in state['files']
+  assert state['files']['docs/new.txt']['file_id'] == 'file_1'
+
 def test_sync_adopts_and_moves_existing_remote_file(tmp_path, monkeypatch):
   fake = FakeClient()
   fake.remote_files = [{'file_id': 'file_1', 'file_name': 'hello.txt', 'file_path': '', 'file_size': '5 Bytes'}]