feat: 完成工作流调度与上传下载 API

tests/fixtures/failing_node.py

@@ -0,0 +1,34 @@
+import http.server
+import json
+import os
+import threading
+
+
+class Handler(http.server.BaseHTTPRequestHandler):
+    def do_GET(self) -> None:
+        if self.path == "/health":
+            self.send_response(200)
+            self.end_headers()
+            return
+        self.send_response(404)
+        self.end_headers()
+
+    def do_POST(self) -> None:
+        self.send_response(500)
+        self.send_header("Content-Type", "application/json")
+        if os.environ.get("WOV_FAIL_INVALID_JSON") == "1":
+            body = b"not-json"
+        else:
+            body = json.dumps({"status": "failed", "error": "boom"}).encode("utf-8")
+        self.send_header("Content-Length", str(len(body)))
+        self.end_headers()
+        self.wfile.write(body)
+
+    def log_message(self, format, *args) -> None:
+        return
+
+
+server = http.server.ThreadingHTTPServer(("127.0.0.1", 0), Handler)
+print(f"WOV_NODE_READY port={server.server_address[1]}", flush=True)
+threading.Thread(target=server.serve_forever, daemon=True).start()
+threading.Event().wait()