feat(P6/T07): adapter compatibility validation dashboard (AutoRefresh)

AdapterCompatibilityDashboardAction added to HubsController (AutoRefresh).
Five panels: adapter summary KPIs (active/draft/deprecated), widget coverage
bar (adapter-backed vs native IHP, breakdown per spec), active contracts in use,
unassigned widgets, active adapter spec table with widget counts. Linked from
hub Show page and global nav.

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

Web/Controller/Hubs.hs

@@ -9,6 +9,7 @@ import Web.View.Hubs.TriageDashboard
 import Web.View.Hubs.GovernanceDashboard
 import Web.View.Hubs.AntifragilityDashboard
 import Web.View.Hubs.AgentAuditDashboard
+import Web.View.Hubs.AdapterCompatibilityDashboard
 import Generated.Types
 import IHP.Prelude
 import IHP.ControllerPrelude
@@ -228,3 +229,11 @@ instance Controller HubsController where
         reviews   <- query @AgentReviewRecord |> fetch
         widgets   <- query @Widget |> fetch
         render AgentAuditDashboardView { hub, proposals, reviews, widgets }
+
+    action AdapterCompatibilityDashboardAction { hubId } = autoRefresh do
+        hub      <- fetch hubId
+        specs    <- query @WidgetAdapterSpec |> orderByAsc #name |> fetch
+        widgets  <- query @Widget |> filterWhere (#hubId, hubId) |> fetch
+        envelopes  <- query @EnvelopeEmissionContract |> filterWhere (#status, "active") |> fetch
+        reportings <- query @InteractionReportingContract |> filterWhere (#status, "active") |> fetch
+        render AdapterCompatibilityDashboardView { hub, specs, widgets, envelopes, reportings }