feat(read_note): return line numbers by default

Change withLineNumbers default from false to true so AI assistants
can reference specific line numbers when discussing notes.

- Apply line numbers to both simple and parseFrontmatter paths
- Add totalLines to ParsedNote type
- Update schema description to document new default
- Update tests to expect line-numbered content by default

BREAKING CHANGE: read_note now returns line-numbered content by default.
Pass withLineNumbers: false to get raw content.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "mcp-server",
-	"version": "1.2.0",
+	"version": "1.2.1",
 	"description": "MCP (Model Context Protocol) server plugin - exposes vault operations via HTTP",
 	"main": "main.js",
 	"scripts": {