Fix compose focus steal; add contact picker to To field; v1.1.17

- Focus effect now only fires when compose/reply first opens, not on every
  keystroke — typing in the To field no longer jumps focus to the body
- 👥 button next to To field opens a searchable contact picker dropdown;
  selecting a contact fills in email and name instantly

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "siteforge",
   "private": true,
-  "version": "1.1.16",
+  "version": "1.1.17",
   "type": "module",
   "scripts": {
     "dev": "vite",