Expose safe production build metadata

app/Http/Controllers/BuildInfoController.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\JsonResponse;
+
+final class BuildInfoController extends Controller
+{
+    public function __invoke(): JsonResponse
+    {
+        $path = base_path('build-info.json');
+
+        if (! is_file($path) || ! is_readable($path)) {
+            return response()->json(['error' => 'Build info unavailable'], 404)
+                ->header('Cache-Control', 'no-store, max-age=0');
+        }
+
+        $decoded = json_decode((string) file_get_contents($path), true);
+
+        if (! is_array($decoded)) {
+            return response()->json(['error' => 'Build info unavailable'], 404)
+                ->header('Cache-Control', 'no-store, max-age=0');
+        }
+
+        $commit = trim((string) ($decoded['git_sha'] ?? ''));
+        $release = trim((string) ($decoded['release_id'] ?? ''));
+        $builtAt = trim((string) ($decoded['deployed_at_utc'] ?? ''));
+
+        if ($commit === '' || $release === '' || $builtAt === '') {
+            return response()->json(['error' => 'Build info unavailable'], 404)
+                ->header('Cache-Control', 'no-store, max-age=0');
+        }
+
+        return response()->json([
+            'environment' => app()->environment(),
+            'commit' => $commit,
+            'built_at' => $builtAt,
+            'release' => $release,
+        ])->header('Cache-Control', 'no-store, max-age=0');
+    }
+}

routes/web.php

@@ -1,5 +1,7 @@
 <?php
 
+use App\Http\Controllers\BuildInfoController;
+
 use Illuminate\Support\Facades\Route;
 use Illuminate\Http\Request;
 use App\Http\Controllers\User\ProfileController;
@@ -78,6 +80,7 @@ use App\Http\Controllers\Settings\CollectionSurfaceController;
 use App\Services\GroupMembershipService;
 use Inertia\Inertia;
 
+Route::get('/build-info.json', BuildInfoController::class)->name('build-info');
 Route::get('/', [HomeController::class, 'index'])->name('index');
 Route::get('/home', [HomeController::class, 'index']);
 // Legacy route compatibility: permanently redirect old lost-password URL to the

tests/Feature/BuildInfoTest.php

@@ -0,0 +1,47 @@
+<?php
+
+use Illuminate\Support\Facades\File;
+
+it('returns either public build metadata or a non-disclosing not-found response', function (): void {
+    $response = $this->getJson('/build-info.json');
+
+    if (File::exists(base_path('build-info.json'))) {
+        $response->assertOk();
+        expect(array_keys($response->json()))->toBe(['environment', 'commit', 'built_at', 'release']);
+    } else {
+        $response->assertNotFound()
+            ->assertJson(['error' => 'Build info unavailable']);
+    }
+});
+
+it('exposes only the public release provenance fields', function (): void {
+    $path = base_path('build-info.json');
+    $hadOriginal = File::exists($path);
+    $original = $hadOriginal ? File::get($path) : null;
+
+    File::put($path, json_encode([
+        'git_sha' => 'abc1234',
+        'release_id' => '20260830-b37-abc1234',
+        'deployed_at_utc' => '2026-08-30T09:30:00Z',
+        'git_branch' => 'develop',
+        'git_dirty' => 0,
+        'remote_folder' => '/opt/www/virtual/SkinbaseNova',
+    ], JSON_THROW_ON_ERROR));
+
+    try {
+        $this->getJson('/build-info.json')
+            ->assertOk()
+            ->assertExactJson([
+                'environment' => app()->environment(),
+                'commit' => 'abc1234',
+                'built_at' => '2026-08-30T09:30:00Z',
+                'release' => '20260830-b37-abc1234',
+            ]);
+    } finally {
+        if ($hadOriginal) {
+            File::put($path, $original);
+        } else {
+            File::delete($path);
+        }
+    }
+});