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/pages/heatmap_page.dart

@@ -2,10 +2,10 @@ import 'package:flutter/material.dart';
 
 import '../data/models.dart';
 import '../data/repository.dart';
-import '../theme/lawheatmap_tokens.dart';
+import '../theme/reclaim_tokens.dart';
 import '../widgets/demo_banner.dart';
 import '../widgets/heatmap_grid.dart';
-import '../widgets/lawheatmap_card.dart';
+import '../widgets/reclaim_card.dart';
 import '../widgets/tier_badge.dart';
 import 'norm_detail_page.dart';
 
@@ -35,7 +35,7 @@ class _HeatmapPageState extends State<HeatmapPage> {
         const DemoBanner(),
         Expanded(
           child: Padding(
-            padding: const EdgeInsets.all(LawHeatmapSpace.xl),
+            padding: const EdgeInsets.all(ReclaimSpace.xl),
             child: FutureBuilder<List<Evaluation>>(
               future: _future,
               builder: (context, snap) {
@@ -48,18 +48,18 @@ class _HeatmapPageState extends State<HeatmapPage> {
                   crossAxisAlignment: CrossAxisAlignment.start,
                   children: [
                     Text('Heatmap', style: t.displaySmall),
-                    const SizedBox(height: LawHeatmapSpace.xs),
+                    const SizedBox(height: ReclaimSpace.xs),
                     Text(
                       'X: jährliche Bürokratiekosten (€, log10). '
                       'Y: Nutzen-Score 0–5. Punktgröße: Betroffenheit. '
                       'Klick auf einen Punkt → Detail mit Pflichten + Quellen.',
                       style: t.bodyLarge?.copyWith(
-                        color: LawHeatmapColors.mute,
+                        color: ReclaimColors.mute,
                       ),
                     ),
-                    const SizedBox(height: LawHeatmapSpace.lg),
+                    const SizedBox(height: ReclaimSpace.lg),
                     Expanded(
-                      child: LawHeatmapCard(
+                      child: ReclaimCard(
                         accent: true,
                         expand: true,
                         child: HeatmapGrid(
@@ -77,10 +77,10 @@ class _HeatmapPageState extends State<HeatmapPage> {
                         ),
                       ),
                     ),
-                    const SizedBox(height: LawHeatmapSpace.lg),
+                    const SizedBox(height: ReclaimSpace.lg),
                     Wrap(
-                      spacing: LawHeatmapSpace.md,
-                      runSpacing: LawHeatmapSpace.sm,
+                      spacing: ReclaimSpace.md,
+                      runSpacing: ReclaimSpace.sm,
                       children: [
                         for (final e in items)
                           InkWell(
@@ -94,10 +94,10 @@ class _HeatmapPageState extends State<HeatmapPage> {
                                 ),
                               );
                             },
-                            child: LawHeatmapCard(
+                            child: ReclaimCard(
                               padding: const EdgeInsets.symmetric(
-                                horizontal: LawHeatmapSpace.md,
-                                vertical: LawHeatmapSpace.sm,
+                                horizontal: ReclaimSpace.md,
+                                vertical: ReclaimSpace.sm,
                               ),
                               child: Row(
                                 mainAxisSize: MainAxisSize.min,
@@ -105,7 +105,7 @@ class _HeatmapPageState extends State<HeatmapPage> {
                                   TierBadge(
                                       tier: e.tierLowest, compact: true),
                                   const SizedBox(
-                                      width: LawHeatmapSpace.sm),
+                                      width: ReclaimSpace.sm),
                                   Text(
                                     '${e.norm.jurabk} ${e.norm.paragraph}',
                                     style: t.labelLarge,