fix: clipboard fallback for insecure contexts, session rename via sessions.patch

- Add copyToClipboard utility with execCommand fallback for HTTP deployments (#76)
- Replace all navigator.clipboard.writeText calls with copyToClipboard
- Session rename now persists server-side via sessions.patch (#78)
- Pass onRename callback from App to Sidebar

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "pinchchat",
-  "version": "1.63.2",
+  "version": "1.64.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "pinchchat",
-      "version": "1.63.2",
+      "version": "1.64.0",
       "license": "MIT",
       "dependencies": {
         "@tailwindcss/vite": "^4.1.18",