chore: enhance configuration descriptions (#8624)

api/configs/middleware/vdb/pgvector_config.py

@@ -6,30 +6,30 @@ from pydantic_settings import BaseSettings
 
 class PGVectorConfig(BaseSettings):
     """
-    PGVector configs
+    Configuration settings for PGVector (PostgreSQL with vector extension)
     """
 
     PGVECTOR_HOST: Optional[str] = Field(
-        description="PGVector host",
+        description="Hostname or IP address of the PostgreSQL server with PGVector extension (e.g., 'localhost')",
         default=None,
     )
 
     PGVECTOR_PORT: Optional[PositiveInt] = Field(
-        description="PGVector port",
+        description="Port number on which the PostgreSQL server is listening (default is 5433)",
         default=5433,
     )
 
     PGVECTOR_USER: Optional[str] = Field(
-        description="PGVector user",
+        description="Username for authenticating with the PostgreSQL database",
         default=None,
     )
 
     PGVECTOR_PASSWORD: Optional[str] = Field(
-        description="PGVector password",
+        description="Password for authenticating with the PostgreSQL database",
         default=None,
     )
 
     PGVECTOR_DATABASE: Optional[str] = Field(
-        description="PGVector database",
+        description="Name of the PostgreSQL database to connect to",
         default=None,
     )