feat: load neutral workflow config

src/wf_config/__init__.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from .loader import load_workflow_config
 from .models import (
     ClientConfig,
     FilesystemStoreConfig,
@@ -12,6 +13,7 @@ from .models import (
 )
 
 __all__ = [
+    "load_workflow_config",
     "ClientConfig",
     "FilesystemStoreConfig",
     "LocalTargetConfig",

src/wf_config/loader.py

@@ -0,0 +1,32 @@
+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+from .models import FilesystemStoreConfig, WorkflowConfigFile
+
+
+def load_workflow_config(path: str | Path) -> WorkflowConfigFile:
+    """Load neutral workflow config and resolve local filesystem paths.
+
+    Relative filesystem store roots are config-file relative so `wf --config`
+    behaves the same regardless of the caller's current working directory.
+    """
+
+    config_path = Path(path)
+    data = json.loads(config_path.read_text(encoding="utf-8"))
+    config = WorkflowConfigFile.model_validate(data)
+    store = config.server.store
+    if isinstance(store, FilesystemStoreConfig) and not store.root.is_absolute():
+        config = config.model_copy(
+            update={
+                "server": config.server.model_copy(
+                    update={
+                        "store": store.model_copy(
+                            update={"root": (config_path.parent / store.root).resolve()}
+                        )
+                    }
+                )
+            }
+        )
+    return config