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/PatternPerformance/Index.hs

@@ -1,6 +1,6 @@
 module Web.View.PatternPerformance.Index where
 
-import Web.View.Prelude
+import IHP.ViewPrelude
 
 data IndexView = IndexView
     { records :: ![PatternPerformanceRecord]
@@ -14,15 +14,7 @@ instance View IndexView where
                 <h1 class="text-2xl font-bold text-gray-900">Pattern Performance</h1>
             </div>
             <div class="mb-4 flex gap-2 flex-wrap">
-                {forM_ hubs \h -> [hsx|
-                    <form method="POST" action={ComputePatternPerformanceAction { hubIdForPerformance = h.id }} class="inline">
-                        {csrfTokenTag}
-                        <button type="submit"
-                            class="px-3 py-1.5 text-sm bg-indigo-600 text-white rounded hover:bg-indigo-700">
-                            Recompute for {h.name}
-                        </button>
-                    </form>
-                |]}
+                {forEach hubs renderRecomputeButton}
             </div>
             <div class="bg-white shadow rounded-lg overflow-hidden">
                 <table class="min-w-full divide-y divide-gray-200">
@@ -53,7 +45,7 @@ instance View IndexView where
             <tr>
                 <td class="px-6 py-4 text-sm text-gray-500">{rankLabel}</td>
                 <td class="px-6 py-4 text-sm font-medium text-gray-900">
-                    <a href={ShowWidgetPatternAction { widgetPatternId = r.widgetPatternId }}
+                    <a href={ShowWidgetPatternAction (r.widgetPatternId)}
                        class="text-blue-600 hover:underline">{show r.widgetPatternId}</a>
                 </td>
                 <td class="px-6 py-4 text-sm text-gray-500">{show r.adoptionCount}</td>
@@ -62,3 +54,14 @@ instance View IndexView where
                 <td class="px-6 py-4 text-sm text-gray-500">{maybe "-" show r.meanOutcomeValue}</td>
             </tr>
         |]
+
+renderRecomputeButton :: Hub -> Html
+renderRecomputeButton h = [hsx|
+    <form method="POST" action={ComputePatternPerformanceAction (h.id)} class="inline">
+        {csrfTokenTag}
+        <button type="submit"
+            class="px-3 py-1.5 text-sm bg-indigo-600 text-white rounded hover:bg-indigo-700">
+            Recompute for {h.name}
+        </button>
+    </form>
+|]