refactor(docs): reorganize documentation structure and update styles

Reorganize documentation into core/advanced/extraction sections for better navigation.
Update terminal theme styles and add rich library for better CLI output.
Remove redundant tutorial files and consolidate content into core sections.
Add personal story to index page for project context.

BREAKING CHANGE: Documentation structure has been significantly reorganized

docs/md_v2/advanced/proxy-security.md

@@ -1,6 +1,4 @@
-# Proxy & Security
-
-Configure proxy settings and enhance security features in Crawl4AI for reliable data extraction.
+# Proxy 
 
 ## Basic Proxy Setup
 
@@ -58,38 +56,3 @@ async with AsyncWebCrawler(config=browser_config) as crawler:
         result = await crawler.arun(url=url, config=browser_config)
 ```
 
-## Custom Headers
-
-Add security-related headers via `BrowserConfig`:
-
-```python
-from crawl4ai.async_configs import BrowserConfig
-
-headers = {
-    "X-Forwarded-For": "203.0.113.195",
-    "Accept-Language": "en-US,en;q=0.9",
-    "Cache-Control": "no-cache",
-    "Pragma": "no-cache"
-}
-
-browser_config = BrowserConfig(headers=headers)
-async with AsyncWebCrawler(config=browser_config) as crawler:
-    result = await crawler.arun(url="https://example.com")
-```
-
-## Combining with Magic Mode
-
-For maximum protection, combine proxy with Magic Mode via `CrawlerRunConfig` and `BrowserConfig`:
-
-```python
-from crawl4ai.async_configs import BrowserConfig, CrawlerRunConfig
-
-browser_config = BrowserConfig(
-    proxy="http://proxy.example.com:8080",
-    headers={"Accept-Language": "en-US"}
-)
-crawler_config = CrawlerRunConfig(magic=True)  # Enable all anti-detection features
-
-async with AsyncWebCrawler(config=browser_config) as crawler:
-    result = await crawler.arun(url="https://example.com", config=crawler_config)
-```