Erstelle CLAUDE.md für RSS-Bridge-Doku

Bridge_Docs/01_How_to_create_a_new_bridge.md

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+# How to create a completely new bridge
+
+New code files MUST have `declare(strict_types=1);` at the top of file:
+
+```php
+<?php
+
+declare(strict_types=1);
+```
+
+Create the new bridge in e.g. `bridges/BearBlogBridge.php`:
+
+```php
+<?php
+
+declare(strict_types=1);
+
+class BearBlogBridge extends BridgeAbstract
+{
+    const NAME = 'BearBlog (bearblog.dev)';
+
+    public function collectData()
+    {
+        $dom = getSimpleHTMLDOM('https://herman.bearblog.dev/blog/');
+        foreach ($dom->find('.blog-posts li') as $li) {
+            $a = $li->find('a', 0);
+            $this->items[] = [
+                'title' => $a->plaintext,
+                'uri' => 'https://herman.bearblog.dev' . $a->href,
+            ];
+        }
+    }
+}
+```
+
+Learn more in [bridge api](https://rss-bridge.github.io/rss-bridge/Bridge_API/index.html).