feat: migrate anime2 scraper from alqanime.si to alqanime.net

- Change BASE_URL from https://alqanime.si to https://alqanime.net
- Remove BASE_DETAIL_URL (now same as BASE_URL)
- Remove detail_image_url method (no longer needed)
- Simplify detail() use case: remove dual-fetch logic that merged
  results from both domains (now same URL)
- Fix CLAUDE.md stale comment

src/infrastructure/repository/alqanime.rs

@@ -7,8 +7,7 @@ use crate::domain::error::ScrapingError;
 use crate::domain::repository::ScrapingRepository;
 use crate::infrastructure::scraping::proxy_fetch::fetch_with_proxy_only;
 
-const BASE_URL: &str = "https://alqanime.si";
-const BASE_DETAIL_URL: &str = "https://alqanime.net";
+const BASE_URL: &str = "https://alqanime.net";
 
 pub struct AlqanimeRepository;
 
@@ -38,11 +37,7 @@ impl AlqanimeRepository {
     }
 
     pub fn detail_url(&self, slug: &str) -> String {
-        format!("{}/{}/", BASE_DETAIL_URL, slug)
-    }
-
-    pub fn detail_image_url(&self, slug: &str) -> String {
-        format!("{}/anime/{}/", BASE_URL, slug)
+        format!("{}/{}/", BASE_URL, slug)
     }
 
     pub fn genre_page_url(&self, genre_slug: &str, page: u32) -> String {