feat: honor temporal read context

src/govoplan_decisions/backend/manifest.py

@@ -68,7 +68,7 @@ manifest = ModuleManifest(
             id="decisions.formal-outcome",
             title="Formal institutional Decisions",
             summary="Reconstruct authority, evidence, reasoning, outcome, effects, and review history.",
-            body="Decisions preserves immutable formal outcomes. Corrections and revocations create linked revisions; requested and observed effects remain distinct for reconciliation.",
+            body="Decisions preserves immutable formal outcomes. Corrections and revocations create linked revisions; requested and observed effects remain distinct for reconciliation. List and unversioned detail reads follow the titlebar valid-time and recorded-time selection; exact revision references remain exact and current authorization is unchanged.",
             layer="configured",
             documentation_types=("admin", "user"),
             audience=("user", "operator", "module_admin", "auditor"),

src/govoplan_decisions/backend/service.py

@@ -12,6 +12,7 @@ from govoplan_core.core.institutional import (
     TemporalRevision,
     revise_formal_decision,
 )
+from govoplan_core.db.temporal import apply_temporal_revision_filter
 from govoplan_decisions.backend.db.models import FormalDecisionRevision
 
 
@@ -37,7 +38,7 @@ class SqlDecisionRegistry:
             FormalDecisionRevision.decision_id == reference.object_id,
         )
         if reference.version is None:
-            query = query.filter(FormalDecisionRevision.superseded_at.is_(None))
+            query = apply_temporal_revision_filter(query, FormalDecisionRevision)
         else:
             query = query.filter(FormalDecisionRevision.revision == reference.version)
         row = query.order_by(FormalDecisionRevision.recorded_at.desc()).first()
@@ -142,8 +143,8 @@ def list_decisions(
         raise DecisionStoreError("Decision list limit must be between 1 and 200.")
     query = session.query(FormalDecisionRevision).filter(
         FormalDecisionRevision.tenant_id == tenant_id,
-        FormalDecisionRevision.superseded_at.is_(None),
     )
+    query = apply_temporal_revision_filter(query, FormalDecisionRevision)
     if state:
         query = query.filter(FormalDecisionRevision.state == state)
     if decision_type: