fix(api): handle reasoning and generating polling statuses

BFL's get_result reference documents two intermediate statuses the
Status enum was missing: Reasoning and Generating (returned by FLUX 3
tasks). Status(status) raised ValueError on them, which landed in the
JSON-parsing error handler with a misleading log line. Both now retry
like Pending, and the retry log prints the actual status.

nodes/base.py

@@ -107,8 +107,8 @@ class BaseFlux:
                 if Status(status) == Status.READY:
                     print(f"[BFL] Task {task_id} ready after {elapsed:.1f}s — downloading image")
                     return self.process_result(result, output_format=output_format)
-                elif Status(status) == Status.PENDING:
-                    print(f"[BFL] Attempt {attempt}/{max_attempts}: pending — retrying in 5s")
+                elif Status(status) in [Status.PENDING, Status.REASONING, Status.GENERATING]:
+                    print(f"[BFL] Attempt {attempt}/{max_attempts}: {status} — retrying in 5s")
                     attempt += 1
                     if attempt <= max_attempts:
                         time.sleep(5)

nodes/status.py

@@ -1,9 +1,12 @@
 from enum import Enum
 
+
 class Status(Enum):
     TASK_NOT_FOUND = "Task not found"
     PENDING = "Pending"
+    REASONING = "Reasoning"
+    GENERATING = "Generating"
     REQUEST_MODERATED = "Request Moderated"
     CONTENT_MODERATED = "Content Moderated"
     READY = "Ready"
-    ERROR = "Error" 
+    ERROR = "Error"