feat: Add Response.accepted() / accepted(body) factories

Author: thced

README.md

@@ -62,6 +62,8 @@ Response.empty();                                 // 204 No Content, no body
 Response.status(404);                             // 404, no body
 Response.status(200);                             // 200 OK, no body
 Response.ok(Map.of("id", "42"));                  // 200 OK, JSON body via TypeMapper
+Response.accepted();                              // 202 Accepted, no body
+Response.accepted(Map.of("jobId", "job-42"));     // 202 Accepted, JSON body
 Response.of(201, newResource);                    // any status, JSON body
 Response.text(200, "hello");                      // text/plain; UTF-8
 Response.bytes(200, pdf, "application/pdf");      // pre-serialised bytes

src/main/java/com/retailsvc/http/Response.java

@@ -48,6 +48,16 @@ public static Response ok(Object body) {
     return new Response(200, body, null, Map.of());
   }
 
+  /** {@code 202 Accepted} with no body. Use for fire-and-forget async work. */
+  public static Response accepted() {
+    return new Response(202, null, null, Map.of());
+  }
+
+  /** {@code 202 Accepted} with {@code body} serialised as JSON (typically a job/poll URL). */
+  public static Response accepted(Object body) {
+    return new Response(202, body, null, Map.of());
+  }
+
   /** {@code status} with {@code body} serialised by the content-type's {@link TypeMapper}. */
   public static Response of(int status, Object body) {
     return new Response(status, body, null, Map.of());