Notes: raise limits (3,000 notes, 200k chars each), reject instead of truncating oversize notes, save-error feedback, richer editor toolbar + word count, copy note; v2.42.0

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "siteforge",
   "private": true,
-  "version": "2.41.0",
+  "version": "2.42.0",
   "type": "module",
   "scripts": {
     "dev": "vite",