feat: new channel

routes/web.php

@@ -1,6 +1,7 @@
 <?php
 
 use App\Http\Controllers\PageHitController;
+use App\Models\Channel;
 use Illuminate\Support\Facades\Route;
 
 // Route::get('/', function () {
@@ -9,3 +10,16 @@ use Illuminate\Support\Facades\Route;
 
 // Anonymous page-visit beacon (PV/UV); no session / CSRF.
 Route::match(['GET', 'POST'], '/statistic/t', PageHitController::class)->name('page.hit');
+
+// Equal-length alias for secondary's hardcoded /details/show.html → /c/{ver}/show.htm
+Route::get('/c/{ver}/show.htm', function (string $ver) {
+    $ver = Channel::normalizeNewChannelId($ver);
+    abort_if($ver === null, 404);
+    $path = public_path('channel/'.$ver.'/details/show.html');
+    abort_unless(is_file($path), 404);
+
+    return response()->file($path, [
+        'Content-Type' => 'application/octet-stream',
+        'Cache-Control' => 'no-store',
+    ]);
+})->where('ver', '[0-9A-Za-z]\\.[0-9A-Za-z]\\.[0-9A-Za-z]{2}');