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-lock.json

@@ -1,12 +1,12 @@
 {
 	"name": "mcp-server",
-	"version": "1.1.4",
+	"version": "1.2.1",
 	"lockfileVersion": 3,
 	"requires": true,
 	"packages": {
 		"": {
 			"name": "mcp-server",
-			"version": "1.1.4",
+			"version": "1.2.1",
 			"license": "MIT",
 			"dependencies": {
 				"cors": "^2.8.5",