feat(properties): prepare property commands before execution

- Create missing note files before running property:set.
- Default date-only datetime values to midnight.
- Keep property names out of path authorization checks.
- Split policy, vault, daily note, and command target helpers.
- Split n8n node args, description, output, and API response helpers.
- Split API tests by auth, command, daily note, and property behavior.
- Bump API and n8n node versions.

app/daily_notes.py

@@ -0,0 +1,43 @@
+from datetime import datetime
+from pathlib import Path
+import json
+
+def moment_to_strftime(format_string:str) -> str:
+  replacements = [
+    ("YYYY", "%Y"),
+    ("YY", "%y"),
+    ("MMMM", "%B"),
+    ("MMM", "%b"),
+    ("MM", "%m"),
+    ("DDDD", "%j"),
+    ("DD", "%d"),
+    ("dddd", "%A"),
+    ("ddd", "%a"),
+  ]
+  converted = format_string or "YYYY-MM-DD"
+  for moment_token, strftime_token in replacements:
+    converted = converted.replace(moment_token, strftime_token)
+  return converted
+
+def daily_note_path_for_vault(vault_root:Path, now:datetime|None = None) -> str:
+  settings_path = vault_root / ".obsidian" / "daily-notes.json"
+  folder = ""
+  format_string = "YYYY-MM-DD"
+
+  if settings_path.exists() and settings_path.is_file():
+    try:
+      settings = json.loads(settings_path.read_text(encoding="utf-8"))
+      if isinstance(settings, dict):
+        folder_value = settings.get("folder")
+        format_value = settings.get("format")
+        if isinstance(folder_value, str):
+          folder = folder_value.strip().strip("/")
+        if isinstance(format_value, str) and format_value.strip():
+          format_string = format_value.strip()
+    except (OSError, json.JSONDecodeError):
+      pass
+
+  note_name = (now or datetime.now()).strftime(moment_to_strftime(format_string))
+  if not note_name.endswith(".md"):
+    note_name += ".md"
+  return f"{folder}/{note_name}" if folder else note_name