feat(cli): sync folders with remote paths

- Store synced folder locations in file_path instead of embedding them in file names.
- Add ignore rules from .nanoshareignore and repeatable sync --ignore flags.
- Adopt existing remote files only after SHA-256 verification.
- Move adopted remotes with metadata updates instead of uploading duplicates.
- Bump NanoShare to 1.23.0 and the standalone CLI to 0.2.0.

cli/nanoshare_client/ignore.py

@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+from fnmatch import fnmatch
+from pathlib import Path
+
+IGNORE_FILE_NAME = '.nanoshareignore'
+
+def load_ignore_patterns(root: Path, extra_patterns: list[str] | None = None) -> list[str]:
+  patterns = [IGNORE_FILE_NAME]
+  ignore_file = root / IGNORE_FILE_NAME
+  if ignore_file.is_file():
+    for line in ignore_file.read_text().splitlines():
+      pattern = line.strip()
+      if pattern and not pattern.startswith('#'):
+        patterns.append(pattern)
+  patterns.extend(pattern for pattern in extra_patterns or [] if pattern)
+  return patterns
+
+def is_ignored(rel_path: str, patterns: list[str]) -> bool:
+  path = rel_path.strip('/')
+  parts = path.split('/')
+  for pattern in patterns:
+    normalized = pattern.strip().replace('\\', '/').strip('/')
+    if not normalized:
+      continue
+    if pattern.endswith('/'):
+      if path == normalized or path.startswith(f'{normalized}/'):
+        return True
+      continue
+    if '/' in normalized:
+      if fnmatch(path, normalized):
+        return True
+    elif any(fnmatch(part, normalized) for part in parts):
+      return True
+  return False