feat: Add Clickzetta Lakehouse vector database integration (#22551)

Co-authored-by: Claude <noreply@anthropic.com>

api/configs/middleware/storage/clickzetta_volume_storage_config.py

@@ -0,0 +1,65 @@
+"""ClickZetta Volume Storage Configuration"""
+
+from typing import Optional
+
+from pydantic import Field
+from pydantic_settings import BaseSettings
+
+
+class ClickZettaVolumeStorageConfig(BaseSettings):
+    """Configuration for ClickZetta Volume storage."""
+
+    CLICKZETTA_VOLUME_USERNAME: Optional[str] = Field(
+        description="Username for ClickZetta Volume authentication",
+        default=None,
+    )
+
+    CLICKZETTA_VOLUME_PASSWORD: Optional[str] = Field(
+        description="Password for ClickZetta Volume authentication",
+        default=None,
+    )
+
+    CLICKZETTA_VOLUME_INSTANCE: Optional[str] = Field(
+        description="ClickZetta instance identifier",
+        default=None,
+    )
+
+    CLICKZETTA_VOLUME_SERVICE: str = Field(
+        description="ClickZetta service endpoint",
+        default="api.clickzetta.com",
+    )
+
+    CLICKZETTA_VOLUME_WORKSPACE: str = Field(
+        description="ClickZetta workspace name",
+        default="quick_start",
+    )
+
+    CLICKZETTA_VOLUME_VCLUSTER: str = Field(
+        description="ClickZetta virtual cluster name",
+        default="default_ap",
+    )
+
+    CLICKZETTA_VOLUME_SCHEMA: str = Field(
+        description="ClickZetta schema name",
+        default="dify",
+    )
+
+    CLICKZETTA_VOLUME_TYPE: str = Field(
+        description="ClickZetta volume type (table|user|external)",
+        default="user",
+    )
+
+    CLICKZETTA_VOLUME_NAME: Optional[str] = Field(
+        description="ClickZetta volume name for external volumes",
+        default=None,
+    )
+
+    CLICKZETTA_VOLUME_TABLE_PREFIX: str = Field(
+        description="Prefix for ClickZetta volume table names",
+        default="dataset_",
+    )
+
+    CLICKZETTA_VOLUME_DIFY_PREFIX: str = Field(
+        description="Directory prefix for User Volume to organize Dify files",
+        default="dify_km",
+    )