fix(WP-0014/A2): continued type-correctness fixes and Tailwind CSS output

- Schema.sql: add FK constraints for phases 6–12 so IHP generates Id X
  instead of UUID for FK columns (widget_adapter_specs, friction_scores,
  hub_routing_rules, agent_proposals, hub_capability_manifests, etc.)
- HubHealth, ModelRouter, ApiInteractionEvents: remove toUUID() wrappers
  now that FK columns carry proper Id types
- FederatedGovernance/Dashboard, HubRoutingRules/Index: same Id comparison fix
- AgentProposals/Index, DecisionRecords/Index, ApiConsumers/Edit: Id type fixes
- BottleneckDetector: add Data.Coerce import; CrossHubPropagation: add guard
- ApiKeys: qualify cryptohash-sha256 import to resolve package ambiguity
- WebhookDeliveryJob: use LBS.fromStrict; remove duplicate diffUTCTime
- Sessions/New: use renderFlashMessages (IHP built-in)
- ArchiveRecords/LineageInspector: simplify renderChainStep signature
- static/app.css: Tailwind CSS output (2011 lines) — A3 confirmed
- workplans/IHUB-WP-0015-local-deployment-intro-ui.md: add workplan

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

Web/View/Sessions/New.hs

@@ -13,7 +13,7 @@ instance View NewView where
         <div class="max-w-sm mx-auto mt-16">
             <h1 class="text-2xl font-semibold mb-6">Sign in to inter-hub</h1>
             <form method="POST" action={CreateSessionAction} class="space-y-4">
-                {forEach (getFlashMessages) renderFlash}
+                {renderFlashMessages}
                 <div>
                     <label class="block text-sm font-medium text-gray-700 mb-1">Email</label>
                     <input type="email" name="email" required
@@ -35,7 +35,3 @@ instance View NewView where
         </div>
     |]
 
-renderFlash :: Text -> Html
-renderFlash msg = [hsx|
-    <div class="bg-red-50 border border-red-200 text-red-700 rounded px-3 py-2 text-sm">{msg}</div>
-|]