feat: remove ai, uploader, and weebs modules

Remove all AI chat/gemini/image endpoints, ryzencdn uploader/file-serve
endpoints, and weebs anime-info/manga-info/whatanime/waifu endpoints.
14 files changed, 1032 lines deleted. cargo check clean, all tests pass.

src/application/mod.rs

@@ -1,4 +1,3 @@
-pub mod ai;
 pub mod anime;
 pub mod anime2;
 pub mod downloader;
@@ -9,5 +8,3 @@ pub mod proxy;
 pub mod search;
 pub mod stalk;
 pub mod tools;
-pub mod uploader;
-pub mod weebs;