Initial commit: Grounded Flutter frontend

A to-do app that doesn't believe you — an enforcement layer rather than a
neutral ledger.

Architecture ported from Autoreceptives/Frontend/Receptive: stacked MVVM with
the mandatory 4-file screen pattern, one ParentViewModel owning the loading /
network / error overlays and the handleError decision tree, one AppDataManager
gateway, dio comms carrying the three identity headers, secure storage with
random-suffixed keys, and a single-chokepoint Navigator. Package root and Dart
package name are both Grounded; org is nya.

The enforcement engine, one unit per formula in utils/:

- DebtEngine      w(class) x severity(d) x decay(t), sublinear severity so old
                  misses cannot swamp the score; abandonment 2x with 30-day
                  decay immunity; late complete retains 30%
- StandingEngine  Good -> Warned -> Grounded -> Lockdown, derived not set;
                  Grounded replaces home with the overdue queue
- CapacityEngine  blocks over-scheduling against p50 of historically completed
                  minutes, with a learned per-category estimation multiplier
- IntegrityEngine session integrity, weekly volume, plyometric contact ceiling
                  and enforced recovery gaps
- ExcuseAnalyser  on-device excuse clustering plus the confrontation copy
- GuardrailEngine distress detection and rationed amnesty
- ToneEngine      all enforcement copy, so the tone cap lives in one place

CommitmentEvent is append-only and is the source of truth rather than the
status field, which is what makes honest history and excuse analysis possible.

Goals contain commitments via parentId, and a task can be run from a
full-screen runner that derives elapsed time from wall-clock so screen-off
cannot lose time. Backgrounding pauses the clock and is counted. The runner is
mirrored into an ongoing notification, with alarm-class full-screen intents
reserved for non-negotiables.

Design language, fonts, icon and native splash are in place; Mason bricks are
retargeted to this project and verified end-to-end.

flutter analyze lib/ reports no errors.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Mfu2gQLSFN21YRBcU2NrTt

frontend/lib/Grounded/about/internal/application/CapacityProfile.dart

@@ -0,0 +1,57 @@
+/// What the user can realistically absorb, learned from history rather than
+/// asserted. Drives the capacity block at plan time.
+class CapacityProfile {
+  /// p50 of historically completed minutes, keyed by weekday (1 = Monday).
+  Map<int, double> completedMinutesByWeekday;
+
+  /// Per-category estimation multiplier — you say 30min, you take 70min -> 2.3.
+  Map<String, double> estimationMultipliers;
+
+  CapacityProfile({
+    Map<int, double>? completedMinutesByWeekday,
+    Map<String, double>? estimationMultipliers,
+  })  : completedMinutesByWeekday = completedMinutesByWeekday ?? <int, double>{},
+        estimationMultipliers = estimationMultipliers ?? <String, double>{};
+
+  factory CapacityProfile.fromJson(Map<String, dynamic> json) {
+    final Map<int, double> minutes = <int, double>{};
+    if (json['completedMinutesByWeekday'] != null) {
+      (json['completedMinutesByWeekday'] as Map<String, dynamic>)
+          .forEach((key, value) {
+        minutes[int.tryParse(key) ?? 1] = (value ?? 0).toDouble();
+      });
+    }
+
+    final Map<String, double> multipliers = <String, double>{};
+    if (json['estimationMultipliers'] != null) {
+      (json['estimationMultipliers'] as Map<String, dynamic>)
+          .forEach((key, value) {
+        multipliers[key] = (value ?? 1).toDouble();
+      });
+    }
+
+    return CapacityProfile(
+      completedMinutesByWeekday: minutes,
+      estimationMultipliers: multipliers,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = <String, dynamic>{};
+    data['completedMinutesByWeekday'] = completedMinutesByWeekday
+        .map((key, value) => MapEntry(key.toString(), value));
+    data['estimationMultipliers'] = estimationMultipliers;
+    return data;
+  }
+
+  /// The learned multiplier for a category, defaulting to honest 1.0 until
+  /// there is enough history to say otherwise.
+  double multiplierFor(String category) {
+    return estimationMultipliers[category] ?? 1.0;
+  }
+
+  /// The p50 of what actually gets done on this weekday.
+  double capacityFor(int weekday) {
+    return completedMinutesByWeekday[weekday] ?? 0;
+  }
+}