refactor(api): continue decoupling dify_graph from API concerns (#33580)

Signed-off-by: -LAN- <laipz8200@outlook.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: WH-2099 <wh2099@pm.me>

api/dify_graph/model_runtime/entities/provider_entities.py

@@ -93,10 +93,14 @@ class ModelCredentialSchema(BaseModel):
 
 class SimpleProviderEntity(BaseModel):
     """
-    Simple model class for provider.
+    Simplified provider schema exposed to callers.
+
+    `provider` is the canonical runtime identifier. `provider_name` is an optional
+    compatibility alias for short-name lookups and is empty when no alias exists.
     """
 
     provider: str
+    provider_name: str = ""
     label: I18nObject
     icon_small: I18nObject | None = None
     icon_small_dark: I18nObject | None = None
@@ -115,10 +119,15 @@ class ProviderHelpEntity(BaseModel):
 
 class ProviderEntity(BaseModel):
     """
-    Model class for provider.
+    Runtime-native provider schema.
+
+    `provider` is the canonical runtime identifier. `provider_name` is a
+    compatibility alias for callers that still resolve providers by short name and
+    is empty when no alias exists.
     """
 
     provider: str
+    provider_name: str = ""
     label: I18nObject
     description: I18nObject | None = None
     icon_small: I18nObject | None = None
@@ -153,6 +162,7 @@ class ProviderEntity(BaseModel):
         """
         return SimpleProviderEntity(
             provider=self.provider,
+            provider_name=self.provider_name,
             label=self.label,
             icon_small=self.icon_small,
             supported_model_types=self.supported_model_types,

api/dify_graph/model_runtime/entities/rerank_entities.py

@@ -1,6 +1,13 @@
+from typing import TypedDict
+
 from pydantic import BaseModel
 
 
+class MultimodalRerankInput(TypedDict):
+    content: str
+    content_type: str
+
+
 class RerankDocument(BaseModel):
     """
     Model class for rerank document.

api/dify_graph/model_runtime/entities/text_embedding_entities.py

@@ -1,10 +1,18 @@
 from decimal import Decimal
+from enum import StrEnum, auto
 
 from pydantic import BaseModel
 
 from dify_graph.model_runtime.entities.model_entities import ModelUsage
 
 
+class EmbeddingInputType(StrEnum):
+    """Embedding request input variants understood by the model runtime."""
+
+    DOCUMENT = auto()
+    QUERY = auto()
+
+
 class EmbeddingUsage(ModelUsage):
     """
     Model class for embedding usage.