chore: cleanup legacy plugins and add plugin assets

- Remove deprecated summary plugin (replaced by deep-dive)
- Remove js-render-poc experimental plugin
- Add plugin preview images
- Update publish scripts with create_plugin support

scripts/download_plugin_images.py

@@ -0,0 +1,133 @@
+"""
+Download plugin images from OpenWebUI Community
+下载远程插件图片到本地目录
+"""
+
+import os
+import sys
+import re
+import requests
+from urllib.parse import urlparse
+
+# Add current directory to path
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from openwebui_community_client import get_client
+
+
+def find_local_plugin_by_id(plugins_dir: str, post_id: str) -> str | None:
+    """根据 post_id 查找本地插件文件"""
+    for root, _, files in os.walk(plugins_dir):
+        for file in files:
+            if file.endswith(".py"):
+                file_path = os.path.join(root, file)
+                with open(file_path, "r", encoding="utf-8") as f:
+                    content = f.read(2000)
+
+                id_match = re.search(
+                    r"(?:openwebui_id|post_id):\s*([a-z0-9-]+)", content
+                )
+                if id_match and id_match.group(1).strip() == post_id:
+                    return file_path
+    return None
+
+
+def download_image(url: str, save_path: str) -> bool:
+    """下载图片"""
+    try:
+        response = requests.get(url, timeout=30)
+        response.raise_for_status()
+        with open(save_path, "wb") as f:
+            f.write(response.content)
+        return True
+    except Exception as e:
+        print(f"  Error downloading: {e}")
+        return False
+
+
+def get_image_extension(url: str) -> str:
+    """从 URL 获取图片扩展名"""
+    parsed = urlparse(url)
+    path = parsed.path
+    ext = os.path.splitext(path)[1].lower()
+    if ext in [".png", ".jpg", ".jpeg", ".gif", ".webp"]:
+        return ext
+    return ".png"  # 默认
+
+
+def main():
+    try:
+        client = get_client()
+    except ValueError as e:
+        print(f"Error: {e}")
+        sys.exit(1)
+
+    base_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+    plugins_dir = os.path.join(base_dir, "plugins")
+
+    print("Fetching remote posts from OpenWebUI Community...")
+    posts = client.get_all_posts()
+    print(f"Found {len(posts)} remote posts.\n")
+
+    downloaded = 0
+    skipped = 0
+    not_found = 0
+
+    for post in posts:
+        post_id = post.get("id")
+        title = post.get("title", "Unknown")
+        media = post.get("media", [])
+
+        if not media:
+            continue
+
+        # 只取第一张图片
+        first_media = media[0] if isinstance(media, list) else media
+
+        # 处理字典格式 {'url': '...', 'type': 'image'}
+        if isinstance(first_media, dict):
+            image_url = first_media.get("url")
+        else:
+            image_url = first_media
+
+        if not image_url:
+            continue
+
+        print(f"Processing: {title}")
+        print(f"  Image URL: {image_url}")
+
+        # 查找对应的本地插件
+        local_plugin = find_local_plugin_by_id(plugins_dir, post_id)
+        if not local_plugin:
+            print(f"  ⚠️  No local plugin found for ID: {post_id}")
+            not_found += 1
+            continue
+
+        # 确定保存路径
+        plugin_dir = os.path.dirname(local_plugin)
+        plugin_name = os.path.splitext(os.path.basename(local_plugin))[0]
+        ext = get_image_extension(image_url)
+        save_path = os.path.join(plugin_dir, plugin_name + ext)
+
+        # 检查是否已存在
+        if os.path.exists(save_path):
+            print(f"  ⏭️  Image already exists: {os.path.basename(save_path)}")
+            skipped += 1
+            continue
+
+        # 下载
+        print(f"  Downloading to: {save_path}")
+        if download_image(image_url, save_path):
+            print(f"  ✅ Downloaded: {os.path.basename(save_path)}")
+            downloaded += 1
+        else:
+            print(f"  ❌ Failed to download")
+
+    print(f"\n{'='*50}")
+    print(
+        f"Finished: {downloaded} downloaded, {skipped} skipped, {not_found} not found locally"
+    )
+
+
+if __name__ == "__main__":
+    main()