fix(provider): fix Bailian rerank payload compatibility for qwen3-rerank (#6222)

* fix(provider): align bailian qwen3 rerank payload with latest API schema

* fix(provider): explicitly ignore unsupported return_documents for qwen3 rerank

Author: kawayiYokami

astrbot/core/provider/sources/bailian_rerank_source.py

@@ -33,6 +33,8 @@ class BailianNetworkError(BailianRerankError):
 class BailianRerankProvider(RerankProvider):
     """阿里云百炼文本重排序适配器."""
 
+    QWEN3_RERANK_MODEL = "qwen3-rerank"
+
     def __init__(self, provider_config: dict, provider_settings: dict) -> None:
         super().__init__(provider_config, provider_settings)
         self.provider_config = provider_config
@@ -83,19 +85,35 @@ def _build_payload(
         Returns:
             请求载荷字典
         """
+        normalized_model = self.model.strip().lower()
+        normalized_top_n = top_n if top_n is not None and top_n > 0 else None
+
+        # qwen3-rerank follows a model-specific payload:
+        # query/documents/top_n/instruct should be at the top level.
+        if normalized_model == self.QWEN3_RERANK_MODEL:
+            payload = {
+                "model": self.model,
+                "query": query,
+                "documents": documents,
+            }
+            if normalized_top_n is not None:
+                payload["top_n"] = normalized_top_n
+            if self.instruct:
+                payload["instruct"] = self.instruct
+            if self.return_documents:
+                logger.warning(
+                    "qwen3-rerank does not support return_documents; "
+                    "this option will be ignored."
+                )
+            return payload
+
         base = {"model": self.model, "input": {"query": query, "documents": documents}}
 
         params = {
             k: v
             for k, v in [
-                ("top_n", top_n if top_n is not None and top_n > 0 else None),
+                ("top_n", normalized_top_n),
                 ("return_documents", True if self.return_documents else None),
-                (
-                    "instruct",
-                    self.instruct
-                    if self.instruct and self.model == "qwen3-rerank"
-                    else None,
-                ),
             ]
             if v is not None
         }