fix: render registry workspaces for harness

harness/tht/config.py

@@ -162,6 +162,11 @@ class PathsConfig(BaseModel):
     sessions: Path = Path("sessions")
 
 
+class RuntimeIdentityConfig(BaseModel):
+    workspace_id: str = Field(pattern=r"^[a-z][a-z0-9-]{2,62}$")
+    workspace_revision: str = Field(pattern=r"^[0-9a-f]{40}$")
+
+
 class WorkspaceRoots(PathsConfig):
     pass
 
@@ -305,7 +310,9 @@ class ExecutionConfig(BaseModel):
 
 class Config(BaseModel):
     _workspace_id: str = PrivateAttr(default="default")
+    _workspace_revision: str | None = PrivateAttr(default=None)
     _config_source: str = PrivateAttr(default="direct")
+    runtime_identity: RuntimeIdentityConfig | None = None
     dwh: DwhResourceConfig
     vectors: VectorResourceConfig | None = None
     session_storage: SessionStorageConfig | None = None
@@ -354,10 +361,20 @@ def workspace_id_from_path(path: Path) -> str:
     return path.resolve().stem.lower().replace(".", "-").replace("_", "-")
 
 
+def workspace_id_for_config(config: Config, path: Path) -> str:
+    """Return the canonical runtime identity, falling back for legacy configs."""
+    if config.runtime_identity is not None:
+        return config.runtime_identity.workspace_id
+    return workspace_id_from_path(path)
+
+
 def load_config(path: Path) -> Config:
     if not path.exists():
         raise ConfigError(f"File di configurazione non trovato: {path}")
-    raw = yaml.safe_load(path.read_text())
+    try:
+        raw = yaml.safe_load(path.read_text())
+    except yaml.YAMLError as exc:
+        raise ConfigError(f"Configurazione YAML non valida: {path}") from exc
     if not isinstance(raw, dict):
         raise ConfigError(f"Configurazione non valida (atteso un mapping YAML): {path}")
     expanded = _resolve_secret_files(_expand_env(raw))
@@ -407,7 +424,12 @@ def load_config(path: Path) -> Config:
             FutureWarning,
             stacklevel=2,
         )
-    cfg._workspace_id = workspace_id_from_path(path)
+    cfg._workspace_id = workspace_id_for_config(cfg, path)
+    cfg._workspace_revision = (
+        cfg.runtime_identity.workspace_revision
+        if cfg.runtime_identity is not None
+        else None
+    )
     cfg._config_source = path.resolve().as_posix()
     return cfg