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/Hubs/Edit.hs

@@ -0,0 +1,31 @@
+module Web.View.Hubs.Edit where
+
+import Web.Types
+import Generated.Types
+import IHP.Prelude
+import IHP.ViewPrelude
+
+data EditView = EditView { hub :: !Hub }
+
+instance View EditView where
+    html EditView { .. } = [hsx|
+        <div class="max-w-lg">
+            <div class="flex items-center gap-2 text-sm text-gray-500 mb-4">
+                <a href={HubsAction} class="hover:text-gray-700">Hubs</a>
+                <span>/</span>
+                <a href={ShowHubAction { hubId = hub.id }} class="hover:text-gray-700">{hub.name}</a>
+                <span>/</span>
+                <span>Edit</span>
+            </div>
+            <h1 class="text-2xl font-semibold mb-6">Edit Hub</h1>
+            {renderForm hub}
+        </div>
+    |]
+
+renderForm :: Hub -> Html
+renderForm hub = formFor hub [hsx|
+    {textField #name}
+    {(textField #slug) { helpText = "Lowercase, URL-safe identifier" }}
+    {textField #domain}
+    {submitButton}
+|]