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/StewardshipRoles/Show.hs

@@ -4,6 +4,7 @@ import Web.Types
 import Generated.Types
 import IHP.Prelude
 import IHP.ViewPrelude
+import Web.Routes ()
 
 data ShowView = ShowView
     { role :: !StewardshipRole
@@ -17,9 +18,7 @@ instance View ShowView where
                 <a href={StewardshipRolesAction} class="text-sm text-gray-500 hover:underline">Stewards</a>
                 <span class="text-gray-300">/</span>
                 <h1 class="text-2xl font-semibold">{role.roleName}</h1>
-                {if isNothing role.revokedAt
-                    then [hsx|<span class="text-sm bg-green-100 text-green-700 px-2 py-0.5 rounded font-medium">active</span>|]
-                    else [hsx|<span class="text-sm bg-gray-100 text-gray-500 px-2 py-0.5 rounded font-medium">revoked</span>|]}
+                {renderRoleStatusBadge (isNothing role.revokedAt)}
             </div>
 
             <div class="bg-white rounded-lg border border-gray-200 p-6">
@@ -40,25 +39,33 @@ instance View ShowView where
                         <dt class="text-gray-500">Revoked At</dt>
                         <dd>{maybe "–" show role.revokedAt}</dd>
                     </div>
-                    {whenJust role.notes \n -> [hsx|
-                        <div class="col-span-2">
-                            <dt class="text-gray-500">Notes</dt>
-                            <dd class="text-gray-700">{n}</dd>
-                        </div>
-                    |]}
+                    {maybe mempty renderRoleNotes role.notes}
                 </dl>
             </div>
 
-            {if isNothing role.revokedAt
-                then [hsx|
-                    <div class="mt-4">
-                        <a href={RevokeRoleAction { stewardshipRoleId = role.id }}
-                           class="text-sm text-red-600 hover:underline"
-                           onclick="return confirm('Revoke this stewardship role?')">
-                            Revoke Role
-                        </a>
-                    </div>
-                |]
-                else mempty}
+            {if isNothing role.revokedAt then renderRevokeLink role.id else mempty}
         </div>
     |]
+
+renderRoleStatusBadge :: Bool -> Html
+renderRoleStatusBadge True  = [hsx|<span class="text-sm bg-green-100 text-green-700 px-2 py-0.5 rounded font-medium">active</span>|]
+renderRoleStatusBadge False = [hsx|<span class="text-sm bg-gray-100 text-gray-500 px-2 py-0.5 rounded font-medium">revoked</span>|]
+
+renderRoleNotes :: Text -> Html
+renderRoleNotes n = [hsx|
+    <div class="col-span-2">
+        <dt class="text-gray-500">Notes</dt>
+        <dd class="text-gray-700">{n}</dd>
+    </div>
+|]
+
+renderRevokeLink :: Id StewardshipRole -> Html
+renderRevokeLink rid = [hsx|
+    <div class="mt-4">
+        <a href={RevokeRoleAction (rid)}
+           class="text-sm text-red-600 hover:underline"
+           onclick="return confirm('Revoke this stewardship role?')">
+            Revoke Role
+        </a>
+    </div>
+|]