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/DeploymentRecords/New.hs

@@ -4,6 +4,7 @@ import Web.Types
 import Generated.Types
 import IHP.Prelude
 import IHP.ViewPrelude
+import Web.Routes ()
 
 data NewView = NewView
     { record      :: !DeploymentRecord
@@ -26,8 +27,6 @@ instance View NewView where
 
             <form method="POST" action={CreateDeploymentRecordAction}
                   class="bg-white rounded-lg border border-gray-200 px-6 py-5 space-y-4">
-                {hiddenField "authenticity_token"}
-
                 <div>
                     <label class="block text-sm font-medium text-gray-700 mb-1">
                         Decision <span class="text-red-500">*</span>
@@ -57,7 +56,6 @@ instance View NewView where
                            value={record.versionRef}
                            placeholder="e.g. v1.2.3, git:abc1234, deploy/2026-03-29"
                            class="w-full text-sm border border-gray-300 rounded px-3 py-2" />
-                    {validationErrorsFor record #versionRef}
                 </div>
 
                 <div>