Fix SSL SAN cert + React hydration #423

- SAN cert covers all 5 PWA domains (tasks,cal,plans,goals,chat)
- i18n hydration: SSR uses cs default, localStorage after mount
- Matches ThemeProvider pattern

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/tasks/app/globals.css

@@ -230,6 +230,24 @@ main {
   }
 }
 
+
+/* Mobile modal fix */
+.modal-content {
+    max-height: 90vh;
+    max-height: 90dvh; /* dynamic viewport height */
+    overflow-y: auto;
+    -webkit-overflow-scrolling: touch;
+    overscroll-behavior: contain;
+}
+
+/* Ensure modal buttons visible above keyboard */
+@media (max-width: 640px) {
+    .modal-content {
+        max-height: 85vh;
+        max-height: 85dvh;
+    }
+}
+
 /* Selection color */
 ::selection {
   background: rgba(59, 130, 246, 0.3);