feat(brand): rename product to Recl∆Im (Reclaim) across app, bundle, docs

Recl∆Im — the F∆I product line for Pflicht-basierte
Wirkungsanalyse und Reform-Vorschlags-Pipelines. Replaces the
working title 'Law-Heatmap', which described the demo view
rather than the platform. Heatmap, Norms list, Hub view,
Methodik are now four panes of the same Recl∆Im app.

Renames in this commit:

  Flutter package      lawheatmap_app   -> reclaim_app
  macOS bundle id      ai.flemming.lawheatmapApp -> ai.flemming.reclaim
  macOS PRODUCT_NAME   lawheatmap_app   -> reclaim_app
  Theme tokens         LawHeatmapColors/Space/Radius/Typography/Theme
                       -> Reclaim*
  Surface card         LawHeatmapCard   -> ReclaimCard
  Top-level widget     LawHeatmapApp    -> ReclaimApp
  Theme files          lawheatmap_theme.dart/lawheatmap_tokens.dart
                       -> reclaim_theme.dart/reclaim_tokens.dart
  Widget file          lawheatmap_card.dart -> reclaim_card.dart
  Build script         build-macos.sh paths and headline string
  Docs                 MACHBARKEITSSTUDIE.md, METHODIK.md, RUN.md,
                       app/README.md, flow YAML
  UI strings           'F∆I Law-Heatmap' / 'Law-Heatmap'
                       -> 'Recl∆Im' / 'Recl∆Im (F∆I)' for vendor-
                       prefixed contexts

flutter analyze: clean. flutter test: 2/2 passing.

The local working directory stays fai_lawheatmap/ for now —
the dir is referenced by the .claude project metadata; renaming
it would break session continuity for no real gain. The Forgejo
repo was renamed via API in the same change-set (fai/lawheatmap
-> fai/reclaim), with the legacy slug serving a redirect
courtesy of Forgejo's built-in rename handling.

Signed-off-by: flemming-it <sf@flemming.it>

app/lib/widgets/heatmap_grid.dart

@@ -3,7 +3,7 @@ import 'dart:math' as math;
 import 'package:flutter/material.dart';
 
 import '../data/models.dart';
-import '../theme/lawheatmap_tokens.dart';
+import '../theme/reclaim_tokens.dart';
 
 /// 2D scatter heatmap — x: Schaden (€/Jahr, log-scaled),
 /// y: Nutzen (0–5), point area: Betroffenheit (sqrt-scaled).
@@ -121,7 +121,7 @@ class _HeatmapPainter extends CustomPainter {
   void paint(Canvas canvas, Size size) {
     final layout = _Layout(size);
     final onSurface = theme.colorScheme.onSurface;
-    const mute = LawHeatmapColors.mute;
+    const mute = ReclaimColors.mute;
 
     // Plot frame.
     final frame = Paint()
@@ -163,7 +163,7 @@ class _HeatmapPainter extends CustomPainter {
     const axisStyle = TextStyle(
       color: mute,
       fontSize: 10,
-      fontFamily: LawHeatmapTypography.body,
+      fontFamily: ReclaimTypography.body,
     );
     _drawText(
       canvas,
@@ -205,8 +205,8 @@ class _HeatmapPainter extends CustomPainter {
       final r = layout.radius(e);
       final hot = e.skmEurPerYear > 50000000;
       final color = Color.lerp(
-        LawHeatmapColors.benefitSaturated,
-        LawHeatmapColors.harmWarm,
+        ReclaimColors.benefitSaturated,
+        ReclaimColors.harmWarm,
         hot ? 0.5 : 0.0,
       )!;
       final body = Paint()..color = color.withValues(alpha: 0.7);
@@ -224,7 +224,7 @@ class _HeatmapPainter extends CustomPainter {
         TextStyle(
           color: onSurface,
           fontSize: 11,
-          fontFamily: LawHeatmapTypography.body,
+          fontFamily: ReclaimTypography.body,
           fontWeight: i == hoverIndex ? FontWeight.w600 : FontWeight.w400,
         ),
       );
@@ -240,8 +240,8 @@ class _HeatmapPainter extends CustomPainter {
         ..color = theme.colorScheme.surface.withValues(alpha: 0.92);
       final boxBorder = Paint()
         ..style = PaintingStyle.stroke
-        ..color = LawHeatmapColors.signal.withValues(alpha: 0.6);
-      final rrect = RRect.fromRectAndRadius(box, LawHeatmapRadius.sm);
+        ..color = ReclaimColors.signal.withValues(alpha: 0.6);
+      final rrect = RRect.fromRectAndRadius(box, ReclaimRadius.sm);
       canvas.drawRRect(rrect, boxPaint);
       canvas.drawRRect(rrect, boxBorder);
       _drawText(
@@ -252,7 +252,7 @@ class _HeatmapPainter extends CustomPainter {
           color: onSurface,
           fontSize: 12,
           fontWeight: FontWeight.w600,
-          fontFamily: LawHeatmapTypography.body,
+          fontFamily: ReclaimTypography.body,
         ),
       );
       _drawText(
@@ -262,7 +262,7 @@ class _HeatmapPainter extends CustomPainter {
         const TextStyle(
           color: mute,
           fontSize: 11,
-          fontFamily: LawHeatmapTypography.body,
+          fontFamily: ReclaimTypography.body,
         ),
       );
       _drawText(
@@ -272,7 +272,7 @@ class _HeatmapPainter extends CustomPainter {
         const TextStyle(
           color: mute,
           fontSize: 11,
-          fontFamily: LawHeatmapTypography.body,
+          fontFamily: ReclaimTypography.body,
         ),
       );
     }