fix: add trim() to adapter detectors for consistent whitespace handling

Update all adapter detector classes to use trim() when checking for empty
strings, ensuring whitespace-only strings properly fall back to parent
detectors. This aligns adapter detectors with the pattern used in base
detector classes.

Changes:
- Twitter: AuthorName, Description
- Wikipedia: Title, Description
- Archive: Title, AuthorName, Description
- ImageShack: Title, AuthorName, Description
- Gist: AuthorName

Author: uzulla

src/Adapters/Archive/Detectors/AuthorName.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('metadata', 'creator');
-        return (is_string($result) && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && trim($result) !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Archive/Detectors/Description.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('metadata', 'extract');
-        return (is_string($result) && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && trim($result) !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Archive/Detectors/Title.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('metadata', 'title');
-        return (is_string($result) && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && trim($result) !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Gist/Detectors/AuthorName.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('owner');
-        return (is_string($result) && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && trim($result) !== '') ? $result : parent::detect();
     }
 }

src/Adapters/ImageShack/Detectors/AuthorName.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('owner', 'username');
-        return (is_string($result) && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && trim($result) !== '') ? $result : parent::detect();
     }
 }

src/Adapters/ImageShack/Detectors/Description.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('description');
-        return (is_string($result) && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && trim($result) !== '') ? $result : parent::detect();
     }
 }

src/Adapters/ImageShack/Detectors/Title.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('title');
-        return (is_string($result) && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && trim($result) !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Twitter/Detectors/AuthorName.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('includes', 'users', '0', 'name');
-        return (is_string($result) && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && trim($result) !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Twitter/Detectors/Description.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('data', 'text');
-        return (is_string($result) && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && trim($result) !== '') ? $result : parent::detect();
     }
 }

src/Adapters/Wikipedia/Detectors/Description.php

@@ -15,6 +15,6 @@ public function detect(): ?string
         $api = $extractor->getApi();
 
         $result = $api->str('extract');
-        return (is_string($result) && $result !== '') ? $result : parent::detect();
+        return (is_string($result) && trim($result) !== '') ? $result : parent::detect();
     }
 }