feat: honor temporal read context

src/govoplan_parties/backend/manifest.py

@@ -66,7 +66,7 @@ manifest = ModuleManifest(
             id="parties.procedure-and-representation",
             title="Procedure parties and representation",
             summary="Keep procedure roles and authority distinct from subject master data.",
-            body="Parties stores immutable procedure participation and explicit representation powers. Powers cannot disappear silently and delivery uses frozen contact snapshots.",
+            body="Parties stores immutable procedure participation and explicit representation powers. Powers cannot disappear silently and delivery uses frozen contact snapshots. Unversioned reads follow the titlebar valid-time and recorded-time selection; explicit procedure resolution times take precedence and current authorization is unchanged.",
             layer="configured",
             documentation_types=("admin", "user"),
             audience=("user", "operator", "module_admin", "auditor"),

src/govoplan_parties/backend/service.py

@@ -3,7 +3,6 @@ from __future__ import annotations
 from datetime import UTC, datetime
 from typing import Any, Mapping, Sequence
 
-from sqlalchemy import or_
 from sqlalchemy.orm import Session
 
 from govoplan_core.core.institutional import (
@@ -15,6 +14,8 @@ from govoplan_core.core.institutional import (
     revise_procedure_party,
     revoke_party_representation,
 )
+from govoplan_core.core.temporal import TemporalDataContext
+from govoplan_core.db.temporal import apply_temporal_revision_filter
 from govoplan_parties.backend.db.models import ProcedurePartyRevision
 
 
@@ -123,7 +124,7 @@ def get_procedure_party(
         ProcedurePartyRevision.party_id == party_id,
     )
     if revision is None:
-        query = query.filter(ProcedurePartyRevision.superseded_at.is_(None))
+        query = apply_temporal_revision_filter(query, ProcedurePartyRevision)
     else:
         query = query.filter(ProcedurePartyRevision.revision == revision)
     row = query.order_by(ProcedurePartyRevision.recorded_at.desc()).first()
@@ -151,13 +152,17 @@ class SqlPartyResolver:
             ProcedurePartyRevision.procedure_owner_module == procedure_ref.owner_module,
             ProcedurePartyRevision.procedure_id == procedure_ref.object_id,
         )
-        if effective_at is None:
-            query = query.filter(ProcedurePartyRevision.superseded_at.is_(None))
-        else:
-            query = query.filter(
-                or_(ProcedurePartyRevision.valid_from.is_(None), ProcedurePartyRevision.valid_from <= effective_at),
-                or_(ProcedurePartyRevision.valid_to.is_(None), ProcedurePartyRevision.valid_to > effective_at),
+        context = None
+        if effective_at is not None:
+            context = TemporalDataContext(
+                validity_mode="at",
+                valid_at=effective_at,
             )
+        query = apply_temporal_revision_filter(
+            query,
+            ProcedurePartyRevision,
+            context=context,
+        )
         rows = query.order_by(
             ProcedurePartyRevision.party_id.asc(),
             ProcedurePartyRevision.recorded_at.desc(),