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.

manifest.json

@@ -1,7 +1,7 @@
 {
 	"id": "mcp-server",
 	"name": "MCP Server",
-	"version": "1.2.0",
+	"version": "1.2.1",
 	"minAppVersion": "0.15.0",
 	"description": "Exposes vault operations via Model Context Protocol (MCP) over HTTP.",
 	"author": "William Ballou",