feat(P7): IHF Phase 7 complete — advanced observability and operational integration

T01 schema: friction_scores, bottleneck_records, hub_health_snapshots,
cross_hub_propagations + migration 1743552000.

T02 Widget Pain Heatmap: computeFrictionScore (formula documented), RecomputeFriction
action, colour-coded grid view (green/yellow/amber/red).

T03 Workflow Bottleneck Analysis: detectBottlenecks across 4 pipeline stages
(candidate 30d, requirement 60d, decision 30d, observation 14d), idempotent,
severity from age ratio, resolve action.

T04 Hub Health Correlation: computeHubHealth (deduction table documented),
append-only HubHealthSnapshot, health history view, badge on hub Show page.

T05 Cross-Hub Propagation: annotation_cluster + widget_type_friction heuristics,
idempotent detection, acknowledge/resolve lifecycle.

T06 Operational Review Board: 4-panel AutoRefresh global dashboard — health matrix,
top-10 friction, bottleneck stage counts, open propagations.

T07 gate: 5 describe blocks in Test/Integration.hs; SCOPE.md updated Phase 7
complete; docs/phase7-summary.md written.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Web/View/Hubs/FrictionHeatmap.hs

@@ -0,0 +1,68 @@
+module Web.View.Hubs.FrictionHeatmap where
+
+import Web.Types
+import Generated.Types
+import IHP.Prelude
+import IHP.ViewPrelude
+import Application.Helper.FrictionScore (scoreBand)
+
+data FrictionHeatmapView = FrictionHeatmapView
+    { hub           :: !Hub
+    , widgets       :: ![Widget]
+    , frictionScores :: ![FrictionScore]
+    }
+
+instance View FrictionHeatmapView where
+    html FrictionHeatmapView { .. } = [hsx|
+        <div class="flex items-center justify-between mb-6">
+            <div>
+                <h1 class="text-2xl font-semibold">Friction Heatmap</h1>
+                <p class="text-sm text-gray-500">{hub.name}</p>
+            </div>
+            <div class="flex gap-2">
+                <a href={RecomputeFrictionAction { hubId = hub.id }}
+                   class="text-sm bg-indigo-600 text-white px-3 py-1.5 rounded hover:bg-indigo-700">
+                    Recompute
+                </a>
+                <a href={ShowHubAction { hubId = hub.id }}
+                   class="text-sm border border-gray-300 px-3 py-1.5 rounded hover:bg-gray-50">
+                    ← Hub
+                </a>
+            </div>
+        </div>
+
+        <div class="mb-4 flex gap-4 text-xs text-gray-500">
+            <span><span class="inline-block w-3 h-3 rounded bg-green-100 mr-1"></span>Low (0–19)</span>
+            <span><span class="inline-block w-3 h-3 rounded bg-yellow-100 mr-1"></span>Medium (20–39)</span>
+            <span><span class="inline-block w-3 h-3 rounded bg-orange-100 mr-1"></span>High (40–59)</span>
+            <span><span class="inline-block w-3 h-3 rounded bg-red-100 mr-1"></span>Critical (60+)</span>
+        </div>
+
+        {if null widgets
+            then [hsx|<p class="text-sm text-gray-400">No widgets in this hub.</p>|]
+            else [hsx|
+                <div class="grid grid-cols-3 gap-3">
+                    {forEach widgets renderWidgetCard}
+                </div>
+            |]}
+    |]
+      where
+        scoreFor w = maybe 0 (.score) (find (\fs -> fs.widgetId == w.id) frictionScores)
+        hasScore w = any (\fs -> fs.widgetId == w.id) frictionScores
+
+        renderWidgetCard :: Widget -> Html
+        renderWidgetCard w =
+            let s    = scoreFor w
+                band = scoreBand s
+            in [hsx|
+            <div class={"rounded-lg border p-4 " <> band}>
+                <div class="flex items-start justify-between">
+                    <a href={ShowWidgetAction { widgetId = w.id }}
+                       class="font-medium text-sm hover:underline">{w.name}</a>
+                    {if hasScore w
+                        then [hsx|<span class="text-lg font-bold">{show s}</span>|]
+                        else [hsx|<span class="text-xs text-gray-400">–</span>|]}
+                </div>
+                <p class="text-xs mt-1 opacity-70">{w.widgetType}</p>
+            </div>
+            |]