fix(preprocess): bind DWH artifacts to workspace

harness/tht/config.py

@@ -5,7 +5,7 @@ from pathlib import Path
 from typing import Annotated, Any, Literal
 
 import yaml
-from pydantic import BaseModel, Field, SecretStr, model_validator, ValidationError
+from pydantic import BaseModel, Field, PrivateAttr, SecretStr, model_validator, ValidationError
 
 from tht.config_compat import translate_legacy_config
 
@@ -283,6 +283,8 @@ class ExecutionConfig(BaseModel):
 
 
 class Config(BaseModel):
+    _workspace_id: str = PrivateAttr(default="default")
+    _config_source: str = PrivateAttr(default="direct")
     dwh: DwhResourceConfig
     vectors: VectorResourceConfig | None = None
     roots: WorkspaceRoots = WorkspaceRoots()
@@ -376,6 +378,8 @@ def load_config(path: Path) -> Config:
             FutureWarning,
             stacklevel=2,
         )
+    cfg._workspace_id = path.stem.lower().replace(".", "-").replace("_", "-")
+    cfg._config_source = path.resolve().as_posix()
     return cfg