Fix examples and SDK for Immich v2 API compatibility

- Fix AssetUploadStatus serialization to use snake_case (created/duplicate/rejected)
- Fix AssetOrder serialization to use lowercase (asc/desc)
- Add file_created_at/file_modified_at to UploadAssetBuilder
- Fix AddAssetsBuilder response type to Vec<Value> instead of AlbumResponse
- Fix ServerAbout model - version is String not ServerVersion struct
- Update upload_photos.rs to handle duplicate responses correctly
- Update server_info.rs to display new ServerAbout fields
- Update AGENTS.md with new example list

examples/server_info.rs

@@ -38,6 +38,13 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     let about = client.server().about().await?;
     println!("  Version: {}", about.version);
     println!("  Version URL: {}", about.version_url);
+    println!("  Licensed: {}", about.licensed);
+    if let Some(ref build) = about.build {
+        println!("  Build: {}", build);
+    }
+    if let Some(ref repository) = about.repository {
+        println!("  Repository: {}", repository);
+    }
 
     Ok(())
 }