feat(T02-T11): IHF Phase 1 schema, controllers, views, and helpers

- Schema: hubs, widgets, widget_versions, interaction_events (append-only
  trigger), annotations, users — single migration file
- Web layer: Types, Routes, FrontController with auth + AutoRefresh layout
- Controllers: Hubs (CRUD), Widgets (CRUD + versioning), InteractionEvents
  (JSON capture, canonical event_type validation), Annotations (threaded,
  append-only)
- Sessions controller for IHP auth
- Views: Hubs (index/show/new/edit), Widgets (index/show/new/edit),
  Annotations (index/new), Sessions (login)
- widgetEnvelope helper with full data-* governance attributes
- Integration tests: Hub CRUD, Widget versioning, event capture, append-only
  guard, annotation threading, validation

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

Web/View/Widgets/Index.hs

@@ -0,0 +1,69 @@
+module Web.View.Widgets.Index where
+
+import Web.Types
+import Generated.Types
+import IHP.Prelude
+import IHP.ViewPrelude
+
+data IndexView = IndexView
+    { widgets :: ![Widget]
+    , hubs    :: ![Hub]
+    }
+
+instance View IndexView where
+    html IndexView { .. } = [hsx|
+        <div class="flex items-center justify-between mb-6">
+            <h1 class="text-2xl font-semibold">Widgets</h1>
+            <a href={NewWidgetAction}
+               class="bg-indigo-600 text-white text-sm font-medium px-4 py-2 rounded hover:bg-indigo-700">
+                Register Widget
+            </a>
+        </div>
+        <div class="bg-white rounded-lg border border-gray-200 overflow-hidden">
+            <table class="w-full text-sm">
+                <thead class="bg-gray-50 border-b border-gray-200">
+                    <tr>
+                        <th class="text-left px-4 py-3 font-medium text-gray-700">Name</th>
+                        <th class="text-left px-4 py-3 font-medium text-gray-700">Hub</th>
+                        <th class="text-left px-4 py-3 font-medium text-gray-700">Type</th>
+                        <th class="text-left px-4 py-3 font-medium text-gray-700">Status</th>
+                        <th class="text-left px-4 py-3 font-medium text-gray-700">Version</th>
+                        <th class="px-4 py-3"></th>
+                    </tr>
+                </thead>
+                <tbody>
+                    {forEach widgets (renderWidget hubs)}
+                </tbody>
+            </table>
+        </div>
+    |]
+
+renderWidget :: [Hub] -> Widget -> Html
+renderWidget hubs w = [hsx|
+    <tr class="border-b border-gray-100 hover:bg-gray-50">
+        <td class="px-4 py-3">
+            <a href={ShowWidgetAction { widgetId = w.id }}
+               class="font-medium text-indigo-600 hover:text-indigo-800">
+                {w.name}
+            </a>
+        </td>
+        <td class="px-4 py-3 text-gray-500">{hubName hubs w.hubId}</td>
+        <td class="px-4 py-3 text-gray-500">{w.widgetType}</td>
+        <td class="px-4 py-3">
+            <span class="inline-block px-2 py-0.5 rounded text-xs bg-green-100 text-green-800">
+                {w.status}
+            </span>
+        </td>
+        <td class="px-4 py-3 text-gray-500 text-xs">v{show w.version}</td>
+        <td class="px-4 py-3 text-right">
+            <a href={EditWidgetAction { widgetId = w.id }}
+               class="text-gray-500 hover:text-gray-700 text-xs">Edit</a>
+        </td>
+    </tr>
+|]
+
+hubName :: [Hub] -> Id Hub -> Text
+hubName hubs hubId =
+    case find (\h -> h.id == hubId) hubs of
+        Just h  -> h.name
+        Nothing -> "—"