feat(api): add comprehensive repository management API endpoints

- Introduce new repo module with complete repository functionality
- Add endpoints for repository CRUD operations (create, get, update, archive, delete)
- Implement branch management with create, list, delete and protection features
- Add tag management with create, list and delete operations
- Include release management with create, update and delete capabilities
- Support repository forking with sync functionality
- Implement starring and watching mechanisms for repositories
- Add member management with roles and invitations
- Provide deploy key management for CI/CD integration
- Create webhook management for external integrations
- Implement branch protection rules with approval requirements
- Add commit status and comment functionality for code reviews
- Include merge checking logic for pull requests
- Register all new endpoints in OpenAPI documentation
- Configure routes to handle new repository-specific paths

api/repo/check_branch_merge.rs

@@ -0,0 +1,56 @@
+use actix_web::{web, HttpResponse};
+use serde::Deserialize;
+use utoipa::IntoParams;
+
+use crate::api::response::{ApiResponse, ApiErrorResponse};
+use crate::error::AppError;
+use crate::service::repo::protection::BranchMergeCheck;
+use crate::service::AppService;
+use crate::session::Session;
+
+#[derive(Debug, Deserialize, IntoParams)]
+pub struct PathParams {
+    pub workspace_name: String,
+    pub repo_name: String,
+    pub target_branch: String,
+}
+
+#[derive(Debug, Deserialize, IntoParams)]
+pub struct QueryParams {
+    pub pr_number: i64,
+}
+
+/// Check if a branch meets merge requirements
+#[utoipa::path(
+    get,
+    path = "/api/v1/workspaces/{workspace_name}/repos/{repo_name}/branches/{target_branch}/merge-check",
+    tag = "Repos",
+    params(PathParams, QueryParams),
+    responses(
+        (status = 200, description = "Merge check completed successfully", body = ApiResponse<BranchMergeCheck>),
+        (status = 401, description = "Unauthorized", body = ApiErrorResponse),
+        (status = 403, description = "Forbidden", body = ApiErrorResponse),
+        (status = 404, description = "Repository or pull request not found", body = ApiErrorResponse),
+        (status = 500, description = "Internal server error", body = ApiErrorResponse),
+    ),
+    security(("session_cookie" = []))
+)]
+pub async fn check_branch_merge(
+    service: web::Data<AppService>,
+    session: Session,
+    path: web::Path<PathParams>,
+    query: web::Query<QueryParams>,
+) -> Result<HttpResponse, AppError> {
+    let check = service
+        .repo
+        .repo_check_branch_merge_allowed(
+            &session,
+            &path.workspace_name,
+            &path.repo_name,
+            &path.target_branch,
+            query.pr_number,
+        )
+        .await?;
+
+    Ok(HttpResponse::Ok().json(ApiResponse::new(check)))
+}