refactor(core): reorganize project structure and remove legacy code

Major reorganization of the project structure:
- Moved legacy synchronous crawler code to legacy folder
- Removed deprecated CLI and docs manager
- Consolidated version manager into utils.py
- Added CrawlerHub to __init__.py exports
- Fixed type hints in async_webcrawler.py
- Fixed minor bugs in chunking and crawler strategies

BREAKING CHANGE: Removed synchronous WebCrawler, CLI, and docs management functionality. Users should migrate to AsyncWebCrawler.

crawl4ai/crawlers/google_search/script.js

@@ -0,0 +1,115 @@
+(() => {
+    // Function to extract image data from Google Images page
+    function extractImageData() {
+        const keys = Object.keys(window.W_jd);
+        let allImageData = [];
+        let currentPosition = 0;
+
+        // Get the symbol we'll use (from first valid entry)
+        let targetSymbol;
+        for (let key of keys) {
+            try {
+                const symbols = Object.getOwnPropertySymbols(window.W_jd[key]);
+                if (symbols.length > 0) {
+                    targetSymbol = symbols[0];
+                    break;
+                }
+            } catch (e) {
+                continue;
+            }
+        }
+
+        if (!targetSymbol) return [];
+
+        // Iterate through ALL keys
+        for (let key of keys) {
+            try {
+                const o1 = window.W_jd[key][targetSymbol]
+                if (!o1) continue;
+                const data = Object.values(o1)[0]
+                // const data = window.W_jd[key][targetSymbol]?.Ws;
+                // Check if this is a valid image data entry
+                if (data && Array.isArray(data[1])) {
+                    const processedData = processImageEntry(data, currentPosition);
+                    if (processedData) {
+                        allImageData.push(processedData);
+                        currentPosition++;
+                    }
+                }
+            } catch (e) {
+                continue;
+            }
+        }
+
+        return allImageData;
+    }
+
+    function processImageEntry(entry, position) {
+        const imageData = entry[1];
+        if (!Array.isArray(imageData)) return null;
+
+        // Extract the image ID
+        const imageId = imageData[1];
+        if (!imageId) return null;
+
+        // Find the corresponding DOM element
+        const domElement = document.querySelector(`[data-docid="${imageId}"]`);
+        if (!domElement) return null;
+
+        // Extract data from the array structure
+        const [
+            _,
+            id,
+            thumbnailInfo,
+            imageInfo,
+            __,
+            ___,
+            rgb,
+            ____,
+            _____,
+            metadata
+        ] = imageData;
+
+        // Ensure we have the required data
+        if (!thumbnailInfo || !imageInfo) return null;
+
+        // Extract metadata from DOM
+        const title = domElement?.querySelector('.toI8Rb')?.textContent?.trim();
+        const source = domElement?.querySelector('.guK3rf')?.textContent?.trim();
+        const link = domElement?.querySelector('a.EZAeBe')?.href;
+
+        if (!link) return null;
+
+        // Build Google Image URL
+        const googleUrl = buildGoogleImageUrl(imageInfo[0], link, imageId, imageInfo[1], imageInfo[2]);
+
+        return {
+            title,
+            imageUrl: imageInfo[0],
+            imageWidth: imageInfo[2],
+            imageHeight: imageInfo[1],
+            thumbnailUrl: thumbnailInfo[0],
+            thumbnailWidth: thumbnailInfo[2],
+            thumbnailHeight: thumbnailInfo[1],
+            source,
+            domain: metadata['2000']?.[1] || new URL(link).hostname,
+            link,
+            googleUrl,
+            position: position + 1
+        };
+    }
+
+    function buildGoogleImageUrl(imgUrl, refUrl, tbnid, height, width) {
+        const params = new URLSearchParams({
+            imgurl: imgUrl,
+            tbnid: tbnid,
+            imgrefurl: refUrl,
+            docid: tbnid,
+            w: width.toString(),
+            h: height.toString(),
+        });
+
+        return `https://www.google.com/imgres?${params.toString()}`;
+    }
+    return extractImageData();
+})();