feat: Inertia profile settings page, Studio edit redesign, EGS, Nova UI components\n\n- Redesign /dashboard/profile as Inertia React page (Settings/ProfileEdit)\n with SettingsLayout sidebar, Nova UI components (TextInput, Textarea,\n Toggle, Select, RadioGroup, Modal, Button), avatar drag-and-drop,\n password change, and account deletion sections\n- Redesign Studio artwork edit page with two-column layout, Nova components,\n integrated TagPicker, and version history modal\n- Add shared MarkdownEditor component\n- Add Early-Stage Growth System (EGS): SpotlightEngine, FeedBlender,\n GridFiller, AdaptiveTimeWindow, ActivityLayer, admin panel\n- Fix upload category/tag persistence (V1+V2 paths)\n- Fix tag source enum, category tree display, binding resolution\n- Add settings.jsx Vite entry, settings.blade.php wrapper\n- Update ProfileController with JSON response support for API calls\n- Various route fixes (profile.edit, toolbar settings link)"

app/Services/NotFoundLogger.php

@@ -0,0 +1,59 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services;
+
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Log;
+use Illuminate\Support\Str;
+
+/**
+ * NotFoundLogger
+ *
+ * Logs 404 and 500 error events to dedicated log channels so they can
+ * be tracked, aggregated and used to create redirect rules later.
+ *
+ * 404 → logged to 'not_found' channel (see config/logging.php daily driver)
+ * 500 → logged to default channel with correlation ID
+ */
+final class NotFoundLogger
+{
+    /**
+     * Log a 404 hit: URL, referrer, user-agent, user ID.
+     */
+    public function log404(Request $request): void
+    {
+        Log::channel(config('logging.not_found_channel', 'daily'))->info('404 Not Found', [
+            'url'        => $request->fullUrl(),
+            'method'     => $request->method(),
+            'referrer'   => $request->header('Referer') ?? '(direct)',
+            'user_agent' => $request->userAgent(),
+            'user_id'    => $request->user()?->id,
+            'ip'         => $request->ip(),
+        ]);
+    }
+
+    /**
+     * Log a 500 server error with a generated correlation ID.
+     * Returns the correlation ID so it can be shown on the error page.
+     */
+    public function log500(\Throwable $e, Request $request): string
+    {
+        $correlationId = strtoupper(Str::random(8));
+
+        Log::error('500 Server Error [' . $correlationId . ']', [
+            'correlation_id' => $correlationId,
+            'url'            => $request->fullUrl(),
+            'method'         => $request->method(),
+            'exception'      => get_class($e),
+            'message'        => $e->getMessage(),
+            'file'           => $e->getFile(),
+            'line'           => $e->getLine(),
+            'user_id'        => $request->user()?->id,
+            'ip'             => $request->ip(),
+        ]);
+
+        return $correlationId;
+    }
+}