feat: honor temporal read context

docs/MANDATES_DOMAIN.md

@@ -21,6 +21,11 @@ Consumers must freeze the exact mandate reference and evidence used for a
 consequential action. A later mandate correction does not rewrite historical
 decisions or effects.
 
+Catalogue reads follow the platform temporal-data context, independently
+selecting valid time and the system's recorded-state cutoff. A resolver's
+explicit effective instant takes precedence. Competence and authorization for
+a new action are never recovered merely by browsing historical data.
+
 ## Revision And Recovery
 
 Creation and revision use optimistic concurrency. Every new revision has a new

src/govoplan_mandates/backend/manifest.py

@@ -117,7 +117,8 @@ manifest = ModuleManifest(
             summary="Define and resolve effective authority, jurisdiction, legal basis, and evidence.",
             body=(
                 "Mandates stores immutable revisions and resolves the one effective authority for a task. "
-                "Conflicting or missing authority fails closed. Consequential consumers retain the exact revision and evidence."
+                "Conflicting or missing authority fails closed. Consequential consumers retain the exact revision and evidence. "
+                "Catalogue reads follow the titlebar valid-time and recorded-time selection; explicit resolution times take precedence and current authorization is unchanged."
             ),
             layer="configured",
             documentation_types=("admin", "user"),

src/govoplan_mandates/backend/service.py

@@ -3,7 +3,6 @@ from __future__ import annotations
 from datetime import UTC, datetime
 from typing import Any, Mapping
 
-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 (
     resolve_mandate_candidates,
     revise_mandate_definition,
 )
+from govoplan_core.core.temporal import TemporalDataContext
+from govoplan_core.db.temporal import apply_temporal_revision_filter
 from govoplan_mandates.backend.db.models import MandateRevision
 
 
@@ -120,7 +121,7 @@ def get_mandate(
     if revision is not None:
         query = query.filter(MandateRevision.revision == revision)
     else:
-        query = query.filter(MandateRevision.superseded_at.is_(None))
+        query = apply_temporal_revision_filter(query, MandateRevision)
     row = query.order_by(MandateRevision.recorded_at.desc()).first()
     return _definition_from_row(row) if row is not None else None
 
@@ -137,8 +138,8 @@ def list_mandates(
         raise MandateStoreError("Mandate list limit must be between 1 and 200.")
     query = session.query(MandateRevision).filter(
         MandateRevision.tenant_id == tenant_id,
-        MandateRevision.superseded_at.is_(None),
     )
+    query = apply_temporal_revision_filter(query, MandateRevision)
     if status:
         query = query.filter(MandateRevision.status == status)
     rows = query.order_by(
@@ -162,19 +163,19 @@ class SqlMandateResolver:
                 "Mandate resolution cannot cross tenants."
             )
         typed_session = _session(session)
+        query = typed_session.query(MandateRevision).filter(
+            MandateRevision.tenant_id == tenant_id,
+        )
+        query = apply_temporal_revision_filter(
+            query,
+            MandateRevision,
+            context=TemporalDataContext(
+                validity_mode="at",
+                valid_at=request.effective_at,
+            ),
+        )
         rows = (
-            typed_session.query(MandateRevision)
-            .filter(
-                MandateRevision.tenant_id == tenant_id,
-                or_(
-                    MandateRevision.valid_from.is_(None),
-                    MandateRevision.valid_from <= request.effective_at,
-                ),
-                or_(
-                    MandateRevision.valid_to.is_(None),
-                    MandateRevision.valid_to > request.effective_at,
-                ),
-            )
+            query
             .order_by(
                 MandateRevision.mandate_id.asc(),
                 MandateRevision.recorded_at.desc(),

tests/test_mandates.py

@@ -13,6 +13,11 @@ from govoplan_core.core.institutional import (
     MandateResolutionRequest,
     TemporalRevision,
 )
+from govoplan_core.core.temporal import (
+    TemporalDataContext,
+    bind_temporal_data_context,
+    reset_temporal_data_context,
+)
 from govoplan_mandates.backend.db.models import MandateRevision
 from govoplan_mandates.backend.service import (
     MandateStoreError,
@@ -124,6 +129,31 @@ class MandateTests(unittest.TestCase):
             )
         )
 
+    def test_read_context_can_reconstruct_recorded_state(self) -> None:
+        record_mandate(self.session, self.principal, definition=definition())
+        record_mandate(
+            self.session,
+            self.principal,
+            definition=definition(revision="2", status="suspended"),
+            expected_revision="1",
+        )
+        token = bind_temporal_data_context(
+            TemporalDataContext(
+                validity_mode="at",
+                valid_at=NOW + timedelta(hours=1),
+                recorded_at=NOW + timedelta(seconds=30),
+            )
+        )
+        try:
+            result = get_mandate(
+                self.session,
+                self.principal,
+                mandate_id="committee-permit",
+            )
+            self.assertEqual("1", result.temporal.revision if result else None)
+        finally:
+            reset_temporal_data_context(token)
+
 
 if __name__ == "__main__":
     unittest.main()