fix(WP-0017/E3): Layer 3 error fixes — controllers and views

Fix compilation errors across 6 controllers and 29 views: import cleanup,
ResponseException pattern for API auth, type fixes, unused import removal.

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

Web/View/ArchiveRecords/Show.hs

@@ -5,7 +5,6 @@ import Generated.Types
 import IHP.Prelude
 import IHP.ViewPrelude
 import Web.Routes ()
-import Data.Coerce (coerce)
 
 data ShowView = ShowView
     { record :: !ArchiveRecord
@@ -62,7 +61,7 @@ renderLineageLink :: ArchiveRecord -> Html
 renderLineageLink record
     | record.subjectType == "Widget" = [hsx|
         <div class="mt-4">
-            <a href={LineageInspectorAction (coerce record.subjectId)}
+            <a href={LineageInspectorAction (Id record.subjectId)}
                class="text-sm text-indigo-600 hover:underline">View Lineage →</a>
         </div>
     |]