feat(obsidian): add property frontmatter commands

- Expose Obsidian CLI property commands via the n8n Obsidian API node
- Add a new Property resource with operations: Set, Read, Remove, List
- Implement correct args mapping for property:set/property:read/property:remove/properties
- Return raw CLI stdout for property read/list for easier downstream parsing
- Update node README with frontmatter/property usage examples
- Bump package version to 0.2.5

packages/n8n-nodes-obsidian-api/README.md

@@ -16,6 +16,11 @@ Resources:
   - Delete
   - Rename
   - List Files
+- **Property**
+  - Set
+  - Read
+  - Remove
+  - List
 - **Daily Note**
   - Append
   - Prepend
@@ -51,6 +56,29 @@ Raw command example:
 ["vault=work", "read", "path=Inbox/Note.md"]
 ```
 
+## Properties / frontmatter
+The official Obsidian CLI supports property/frontmatter commands. The n8n node exposes them as the **Property** resource:
+
+- **Set** sends `property:set path=<note> name=<property> value=<value> type=<type>`
+- **Read** sends `property:read path=<note> name=<property>`
+- **Remove** sends `property:remove path=<note> name=<property>`
+- **List** sends `properties name=<optional> format=<yaml|json|tsv>`
+
+Examples:
+```text
+path=00 Kontext/Feedback Browser CLI Tests.md
+name=tags
+value=kontext, feedback-browser-cli-tests
+type=list
+```
+
+```text
+path=00 Kontext/Feedback Browser CLI Tests.md
+name=date
+value=2026-06-24
+type=date
+```
+
 ## Local install in self-hosted n8n
 From this repo:
 ```bash