Chiusura fase di ristrutturazione e modularizzazione del workflow per favorire sviluppo modulare

harness/tests/test_workflow_observable_contract.py

@@ -1,15 +1,15 @@
 """Executable baseline for persisted workflow behavior touched by the refactor."""
 
+import hashlib
 from dataclasses import asdict
 from datetime import UTC, datetime
-import hashlib
 
 import pytest
 
-from tht.evidence.corpus.models import CanonicalDocument, CorpusManifest
-from tht.evidence.corpus.store import CorpusStore
 from tht.decisions import DecisionRecord, append_decision
 from tht.evidence import project_session
+from tht.evidence.corpus.models import CanonicalDocument, CorpusManifest
+from tht.evidence.corpus.store import CorpusStore
 from tht.phase import current_phase, effective_decisions
 from tht.session.models import Candidate, SchemaLinking
 from tht.workflow import load_workflow