refactor(social): trim verbose comments + harden X chunked upload from review

Cold-review follow-ups on the PR:
- Trim the oversized docblocks/inline comments added across the API controller,
  MediaAttacher, Post, the publish job, and the X publisher to one line (keeping
  the @param/@return array-shape annotations).
- XPublisher::chunkedUpload now accepts ?string $mediaCategory and only sends
  media_category when present — getMediaCategory() can return null, so the strict
  string param was a latent TypeError (unreachable on X today, removed anyway).
- Fix MediaAttacher docblocks: the file imports Type as MediaType, so the
  @param array<Type> annotations didn't resolve — now array<MediaType>.
- Tests: cover the failed() job hook genericizing a raw error, and X failing
  cleanly (XPublishException) when media can't be downloaded.

app/Http/Controllers/Api/PostController.php

@@ -100,11 +100,7 @@ public function update(UpdatePostRequest $request, Post $post): PostResource|Jso
     }
 
     /**
-     * Download and host any external media URLs in an inline media array so the
-     * stored post never references a third-party URL (which can 404 or change at
-     * publish time). Items already on our storage pass through. Rejects the
-     * request when any URL can't be fetched, so a post is never persisted with
-     * broken media.
+     * Download and host external media URLs; reject (422) if one can't be fetched.
      *
      * @param  array<MediaType>  $allowedTypes
      * @param  array<int, array<string, mixed>>  $media

app/Http/Requests/Api/Post/StorePostRequest.php

@@ -69,9 +69,6 @@ public function rules(): array
     }
 
     /**
-     * The distinct platforms selected in this request, used to compute the
-     * media types acceptable for the post being created.
-     *
      * @return Collection<int, Platform>
      */
     public function selectedPlatforms(): Collection

app/Jobs/PublishToSocialPlatform.php

@@ -224,11 +224,8 @@ private function broadcastStatus(): void
     }
 
     /**
-     * A failure message safe to surface to the user — it ends up in the
-     * post-failure email. Only our own publish exceptions carry a vetted
-     * user-facing message; any other throwable (engine errors like TypeError,
-     * or library exceptions) can embed file paths and internals, so it's
-     * replaced with a generic line. The raw detail stays in the logs.
+     * A user-safe failure message: only our own publish exceptions are shown
+     * verbatim; anything else is genericized so internals never reach the email.
      */
     private function safeFailureMessage(\Throwable $e): string
     {

app/Models/Post.php

@@ -155,10 +155,7 @@ public function allowedMediaTypes(): array
     }
 
     /**
-     * The media types acceptable across a set of platforms: the intersection of
-     * what each platform allows. With no platform, accept anything. Lets callers
-     * that don't have a persisted Post yet (e.g. the API create flow) compute the
-     * same constraint from the platforms in the request.
+     * Media types acceptable across a set of platforms (intersection; empty = all).
      *
      * @param  Collection<int, Platform>  $platforms
      * @return array<Type>

app/Services/Post/MediaAttacher.php

@@ -45,13 +45,10 @@ public function attachFromUrls(Post $post, array $urls): array
     }
 
     /**
-     * Resolve an inline media array (as accepted by the public API on post
-     * create/update) into fully hosted media items. Items already stored on our
-     * disk (they carry a `path`) pass through untouched; every other item is
-     * treated as an external `url` to download and host, so publishing never
-     * depends on a third-party URL staying alive.
+     * Resolve an inline media array into hosted items: items with a `path` pass
+     * through, external URLs are downloaded and hosted.
      *
-     * @param  array<Type>  $allowedTypes
+     * @param  array<MediaType>  $allowedTypes
      * @param  array<int, array<string, mixed>>  $items
      * @return array{media: array<int, array<string, mixed>>, failed: array<int, string>}
      */
@@ -78,11 +75,9 @@ public function resolveInlineMedia(Workspace $workspace, array $allowedTypes, ar
     }
 
     /**
-     * Download a public URL, validate it against the accepted media types, and
-     * store it on the workspace. Returns the media item, or null on any failure
-     * (download error, disallowed type, oversized).
+     * Download a URL, validate its type, and store it on the workspace.
      *
-     * @param  array<Type>  $allowedTypes
+     * @param  array<MediaType>  $allowedTypes
      * @return array<string, mixed>|null
      */
     public function fetchToWorkspace(Workspace $workspace, array $allowedTypes, string $url): ?array

app/Services/Social/XPublisher.php

@@ -124,9 +124,6 @@ private function uploadMedia($mediaItem): ?array
                 );
             }
 
-            // Recover the MIME from the downloaded bytes when the item carries
-            // none (e.g. media attached by URL), and fail cleanly rather than
-            // with a TypeError when it still can't be determined.
             if (blank($mimeType)) {
                 $mimeType = mime_content_type($tempFile) ?: null;
             }
@@ -198,16 +195,21 @@ private function uploadMedia($mediaItem): ?array
         }
     }
 
-    private function chunkedUpload(string $tempFile, int $totalBytes, string $mimeType, string $mediaCategory): array
+    private function chunkedUpload(string $tempFile, int $totalBytes, string $mimeType, ?string $mediaCategory): array
     {
+        $initPayload = [
+            'media_type' => $mimeType,
+            'total_bytes' => $totalBytes,
+        ];
+
+        if ($mediaCategory) {
+            $initPayload['media_category'] = $mediaCategory;
+        }
+
         // INIT
         $initResponse = $this->socialHttp()->withToken($this->accessToken)
             ->timeout(60)
-            ->post("{$this->baseUrl}/media/upload/initialize", [
-                'media_type' => $mimeType,
-                'media_category' => $mediaCategory,
-                'total_bytes' => $totalBytes,
-            ]);
+            ->post("{$this->baseUrl}/media/upload/initialize", $initPayload);
 
         if ($initResponse->failed()) {
             Log::error('X chunked upload INIT error', [

tests/Feature/Jobs/PublishToSocialPlatformTest.php

@@ -181,7 +181,6 @@
 
     $this->postPlatform->refresh();
     expect($this->postPlatform->status)->toBe(PlatformStatus::Failed);
-    // Untrusted exceptions are genericized — only vetted publish exceptions surface their message.
     expect($this->postPlatform->error_message)->toBe('An unexpected error occurred while publishing. Please try again.');
 });
 
@@ -206,7 +205,6 @@
 test('publish never leaks a raw internal error to the failure record (and the email)', function () {
     Event::fake();
 
-    // A PHP TypeError embeds the server file path in its message; it must not reach the user.
     $publisher = Mockery::mock(LinkedInPublisher::class);
     $publisher->shouldReceive('publish')->andThrow(new TypeError(
         'X::getMediaCategory(): Argument #1 ($mimeType) must be of type string, null given, called in /home/forge/app.trypost.it/releases/72198060/app/Services/Social/XPublisher.php on line 130'
@@ -223,6 +221,19 @@
         ->and($this->postPlatform->error_message)->not->toContain('getMediaCategory');
 });
 
+test('the job-failed hook also genericizes a raw internal error', function () {
+    Event::fake();
+
+    (new PublishToSocialPlatform($this->postPlatform))->failed(new TypeError(
+        'boom in /home/forge/app.trypost.it/releases/72198060/app/Services/Social/XPublisher.php on line 130'
+    ));
+
+    $this->postPlatform->refresh();
+    expect($this->postPlatform->status)->toBe(PlatformStatus::Failed)
+        ->and($this->postPlatform->error_message)->toBe('An unexpected error occurred while publishing. Please try again.')
+        ->and($this->postPlatform->error_message)->not->toContain('/home/forge');
+});
+
 test('publish to social platform marks account as token expired on auth failure', function () {
     Event::fake();
     Mail::fake();

tests/Feature/Services/Social/XPublisherTest.php

@@ -4,6 +4,7 @@
 
 use App\Enums\PostPlatform\ContentType;
 use App\Enums\SocialAccount\Platform;
+use App\Exceptions\Social\XPublishException;
 use App\Exceptions\TokenExpiredException;
 use App\Models\Post;
 use App\Models\PostPlatform;
@@ -254,16 +255,12 @@
 });
 
 test('x publisher recovers a missing mime type from the downloaded bytes', function () {
-    // Media attached by URL can arrive without a mime_type; X must still publish
-    // it instead of crashing with a TypeError in getMediaCategory().
     $this->post->update([
         'media' => [
             ['url' => 'https://cdn.example.com/listing'],
         ],
     ]);
 
-    // The resize itself is covered by MediaOptimizerTest; here we only need the
-    // MIME to be recovered so the upload doesn't crash on a null mime.
     $mockOptimizer = Mockery::mock(MediaOptimizer::class);
     $mockOptimizer->shouldReceive('optimizeImage')->andReturnUsing(function (string $tempFile) {
         $optimized = tempnam(sys_get_temp_dir(), 'x_opt_');
@@ -284,7 +281,6 @@
             return Http::response(['data' => ['id' => '1212121212', 'text' => 'Hello from X!']], 200);
         }
 
-        // The media download — real image bytes so the MIME can be sniffed.
         return Http::response(
             file_get_contents(__DIR__.'/../../../fixtures/1x1.png'),
             200,
@@ -399,3 +395,16 @@
 
     expect($appendCount)->toBeGreaterThan(1);
 });
+
+test('x publisher fails cleanly when media cannot be downloaded', function () {
+    $this->post->update([
+        'media' => [
+            ['url' => 'https://cdn.example.com/listing', 'mime_type' => 'image/jpeg'],
+        ],
+    ]);
+
+    Http::fake(['cdn.example.com/listing' => Http::response(null, 404)]);
+
+    expect(fn () => $this->publisher->publish($this->postPlatform))
+        ->toThrow(XPublishException::class, 'Could not fetch the media to upload to X');
+});