fix(WP-0014): pre-flight compilation fixes, Tailwind pipeline, and admin seed

A2 — Compilation fixes:
- Remove inline FK constraints from Schema.sql; IHP schema compiler cannot
  parse them. Add 1744329600-restore-fk-constraints.sql migration to restore
  referential integrity at the DB level.
- Rename `#label` → `#label_` throughout to avoid clash with Haskell built-in.
- Fix `hub.id == hid` UUID comparisons to use `toUUID hub.id`.
- Replace non-existent `setStatus`/`respondJson` calls with
  `renderJsonWithStatusCode` throughout Api controllers.
- Fix qualified package import for `cryptohash-sha256` in Auth.hs.
- Add `CanSelect (Text, Text)` instance in Helper.View.
- Refactor HSX inline lambdas to named helper functions in 100+ views
  (GHC cannot infer types for anonymous functions inside quasi-quoted HSX).
- Fix missing imports (IHP.QueryBuilder, IHP.Fetch, Web.Routes, Only, etc.)
  across helpers and controllers.
- Remove duplicate `diffUTCTime` definition in BottleneckDetector.
- Change `createEventForHub` return type from `IO ResponseReceived` to `IO ()`.
- Seed type-registry vocabulary via 1744502400-seed-type-registries.sql
  (moved from Schema.sql where IHP does not execute INSERT statements).

A3 — Tailwind build pipeline:
- Add `tailwindcss` to flake.nix native packages.
- Uncomment `tailwind.exec` process in devenv shell config.
- Add tailwind/tailwind.config.js (scans Web/View/**/*.hs).
- Add tailwind/app.css with @tailwind directives.

A4 — Admin user seed:
- Add 1744416000-seed-admin-user.sql: inserts admin@inter-hub.local
  with bcrypt-hashed password admin1234! (cost 10).
- Add .env.example documenting all required environment variables
  and default admin credentials.

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

Web/View/Hubs/TriageDashboard.hs

@@ -4,6 +4,7 @@ import Web.Types
 import Generated.Types
 import IHP.Prelude
 import IHP.ViewPrelude
+import Web.Routes ()
 
 data TriageDashboardView = TriageDashboardView
     { hub               :: !Hub
@@ -20,7 +21,7 @@ instance View TriageDashboardView where
         <div class="mb-6 flex items-center gap-2 text-sm text-gray-500">
             <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>
+            <a href={ShowHubAction (hub.id)} class="hover:text-gray-700">{hub.name}</a>
             <span>/</span>
             <span>Triage Dashboard</span>
         </div>
@@ -46,25 +47,13 @@ instance View TriageDashboardView where
             <!-- Triage queue -->
             <section>
                 <h2 class="text-lg font-medium mb-3">Triage Queue (Open)</h2>
-                {if null triageQueue
-                    then [hsx|<p class="text-sm text-gray-400">Queue empty.</p>|]
-                    else [hsx|
-                        <div class="space-y-2">
-                            {forEach triageQueue (renderQueueItem widgets)}
-                        </div>
-                    |]}
+                {renderTriageQueue triageQueue widgets}
             </section>
 
             <!-- Recent escalations -->
             <section>
                 <h2 class="text-lg font-medium mb-3">Recent Escalations</h2>
-                {if null recentEscalations
-                    then [hsx|<p class="text-sm text-gray-400">No escalations yet.</p>|]
-                    else [hsx|
-                        <div class="space-y-2">
-                            {forEach recentEscalations (renderEscalationItem widgets)}
-                        </div>
-                    |]}
+                {renderEscalationsSection recentEscalations widgets}
             </section>
         </div>
 
@@ -85,6 +74,22 @@ renderKpi label status candidates colorClass =
     </div>
 |]
 
+renderTriageQueue :: [RequirementCandidate] -> [Widget] -> Html
+renderTriageQueue [] _ = [hsx|<p class="text-sm text-gray-400">Queue empty.</p>|]
+renderTriageQueue items ws = [hsx|
+    <div class="space-y-2">
+        {forEach items (renderQueueItem ws)}
+    </div>
+|]
+
+renderEscalationsSection :: [RequirementCandidate] -> [Widget] -> Html
+renderEscalationsSection [] _ = [hsx|<p class="text-sm text-gray-400">No escalations yet.</p>|]
+renderEscalationsSection items ws = [hsx|
+    <div class="space-y-2">
+        {forEach items (renderEscalationItem ws)}
+    </div>
+|]
+
 renderQueueItem :: [Widget] -> RequirementCandidate -> Html
 renderQueueItem widgets c =
     let mWidget = find (\w -> w.id == c.sourceWidgetId) widgets
@@ -92,7 +97,7 @@ renderQueueItem widgets c =
     in [hsx|
     <div class="bg-white rounded border border-gray-200 px-4 py-3">
         <div class="flex items-start justify-between gap-2">
-            <a href={ShowRequirementCandidateAction { requirementCandidateId = c.id }}
+            <a href={ShowRequirementCandidateAction (c.id)}
                class="text-sm font-medium text-indigo-600 hover:text-indigo-800 leading-snug">
                 {c.title}
             </a>
@@ -115,7 +120,7 @@ renderEscalationItem widgets c =
             <span class={statusClass c.status <> " text-xs px-2 py-0.5 rounded"}>{c.status}</span>
             <span class="text-xs text-gray-500">{maybe "—" (.name) mWidget}</span>
         </div>
-        <a href={ShowRequirementCandidateAction { requirementCandidateId = c.id }}
+        <a href={ShowRequirementCandidateAction (c.id)}
            class="text-sm text-indigo-600 hover:text-indigo-800">{c.title}</a>
     </div>
 |]