Add routines module and full goal management

Routines: workout, meditation and must-do routines with timed, rep and
tick steps, sets and rest. A library screen, a builder with templates
and drag-to-reorder steps, and a full-screen player that auto-advances
timed phases, counts backgrounding and logs broken chains as partial.

Goals: a goal editor (deadline, colour, category, default class, archive),
routines linked to goals, and a goal field on tasks and routines. Tasks
added from inside a goal are now actually attached to it via parentId.

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

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

@@ -0,0 +1,63 @@
+import 'package:flutter/cupertino.dart';
+
+import '../../about/internal/application/TextType.dart';
+import '../../utils/Colors.dart';
+import '../text/Text.dart';
+
+/// A labelled minus / value / plus control for sets, reps and seconds.
+/// Numbers are stepped, not typed — nobody wants a keyboard mid-routine-edit.
+Widget countStepper(
+  String label,
+  String value, {
+  required VoidCallback onMinus,
+  required VoidCallback onPlus,
+  bool canMinus = true,
+}) {
+  return Container(
+    padding: const EdgeInsets.fromLTRB(14, 10, 8, 10),
+    decoration: BoxDecoration(
+      color: colorWhite,
+      borderRadius: BorderRadius.circular(12),
+      border: Border.all(color: colorBorder, width: 1),
+    ),
+    child: Row(
+      children: [
+        Expanded(
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              text(label.toUpperCase(), 9, TextType.Bold,
+                  color: colorGrey2, letterSpacing: 1.0),
+              const SizedBox(height: 4),
+              text(value, 17, TextType.Medium, color: colorPrimaryDark),
+            ],
+          ),
+        ),
+        _stepButton(CupertinoIcons.minus, canMinus ? onMinus : null),
+        const SizedBox(width: 6),
+        _stepButton(CupertinoIcons.plus, onPlus),
+      ],
+    ),
+  );
+}
+
+Widget _stepButton(IconData icon, VoidCallback? onTap) {
+  final bool enabled = onTap != null;
+
+  return GestureDetector(
+    onTap: onTap,
+    behavior: HitTestBehavior.opaque,
+    child: Container(
+      width: 34,
+      height: 34,
+      alignment: Alignment.center,
+      decoration: BoxDecoration(
+        color: enabled ? colorSecondary : colorInset,
+        borderRadius: BorderRadius.circular(10),
+      ),
+      child: Icon(icon,
+          size: 14, color: enabled ? colorPrimaryDark : colorGrey),
+    ),
+  );
+}