refactor(core): decouple actors and remove workflow templates (#67)

Removes the deprecated `workflow_template` concept entirely across both backend API routers, internal logic handling within the `supervisory_node` and `consciousness_node`, and front-end components. Enables `consciousness_node` to work autonomously.

Also refactors core package structure to enforce the "one python package, one Ray Actor" architectural rule. `GlobalWorkflowManager`, `WorkflowRunningEngine`, `PostgresDatabase`, and `WorkerCluster` have been moved to their own top-level decoupled package directories with properly exported `__init__.py` modules. Test suites have been relocated and import paths updated across the system.

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
Co-authored-by: zhaoxi826 <198742034+zhaoxi826@users.noreply.github.com>

tests/utils/access_test.py

@@ -28,9 +28,9 @@ sys.modules["passlib"] = MagicMock()
 sys.modules["passlib.context"] = MagicMock()
 sys.modules["pretor.core.database.table.user"] = MagicMock()
 
-import pytest
-import jwt
-from pretor.utils.access import Accessor
+import pytest  # noqa: E402
+import jwt  # noqa: E402
+from pretor.utils.access import Accessor  # noqa: E402
 
 
 def test_decode_token_success():
@@ -55,6 +55,7 @@ def test_decode_token_expired():
     token = "expired.token.here"
 
     from fastapi import HTTPException
+
     with patch("jwt.decode", side_effect=jwt.ExpiredSignatureError):
         with patch("pretor.utils.access.HTTPException", HTTPException):
             with pytest.raises(HTTPException) as excinfo:
@@ -69,6 +70,7 @@ def test_decode_token_invalid():
     token = "invalid.token.here"
 
     from fastapi import HTTPException
+
     with patch("jwt.decode", side_effect=jwt.InvalidTokenError):
         with patch("pretor.utils.access.HTTPException", HTTPException):
             with pytest.raises(HTTPException) as excinfo:
@@ -93,4 +95,5 @@ def test_decode_token_validation_error():
                         Accessor._decode_token(token)
 
             assert excinfo.value.status_code == 401
-            assert excinfo.value.detail == "无效的认证凭证"
+            assert excinfo.value.detail == "无效的认证凭证"
+# noqa: E402