Rebuild Home around a forest header with streak, score and water

Home now opens on a deep green header: greeting, a Today / Weekly toggle,
a seven-day streak with a leaf on every kept day, minutes held with a +
ring, plan thumbnails, the report-card letter as the score, and one bar per
commitment class (weekly view swaps in per-day bars and class rates). The
+ opens an "Add to today" sheet over the blurred day. A water tracker sits
below the header, kept on the device. The nav marks the selected tab as a
filled block and drops the side action button.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KhQh614DMeYoQEH9SoMRUw

frontend/lib/Grounded/designs/input/InputFields.dart

@@ -85,10 +85,12 @@ Widget inputField(
 Widget quickAddField(
   TextEditingController controller,
   String hint,
-  ValueChanged<String> onSubmitted,
-) {
+  ValueChanged<String> onSubmitted, {
+  FocusNode? focusNode,
+}) {
   return TextField(
     controller: controller,
+    focusNode: focusNode,
     onSubmitted: onSubmitted,
     textInputAction: TextInputAction.done,
     style: TextStyle(