feat(api): implement pull request assignees and check runs endpoints

- Add PR assignees API with list, assign, and unassign operations
- Add PR check runs API with create, update, list, and delete operations
- Implement workspace finding by ID method in core service
- Update .gitignore to include .env* files while preserving .env.example
- Reorder imports in multiple API files for consistency
- Format function calls with proper line breaks across PR-related APIs
- Add wiki revision comparison endpoint with proper schema definitions
- Integrate new API modules into main application setup
- Add health check, readiness probe, and OpenAPI endpoints to main server
- Configure session management and dependency injection in main application

gen_openapi.rs

@@ -1,12 +1,11 @@
-use utoipa::OpenApi;
 use appks::api::openapi::OpenApiDoc;
+use utoipa::OpenApi;
 
 fn main() {
-    let json = OpenApiDoc::openapi()
-        .to_pretty_json();
+    let json = OpenApiDoc::openapi().to_pretty_json();
     if let Ok(json) = json {
         if let Err(e) = std::fs::write("openapi.json", json) {
             eprintln!("{}", e);
         }
     }
-}
+}