Add governed GRB refresh workflow

backend/app/schemas/__init__.py

@@ -16,6 +16,7 @@ from .source_catalog import (
     SourceCatalogProbeReport,
     SourceCatalogProbeSummary,
 )
+from .grb_refresh import GrbRefreshLayerPlan, GrbRefreshPlan, GrbRefreshPlanSummary
 from .detection import (
     DetectionListResponse,
     DetectionModelCapability,
@@ -149,6 +150,9 @@ __all__ = [
     "SourceCatalogProbeItem",
     "SourceCatalogProbeReport",
     "SourceCatalogProbeSummary",
+    "GrbRefreshLayerPlan",
+    "GrbRefreshPlan",
+    "GrbRefreshPlanSummary",
     "DetectionListResponse",
     "DetectionModelCapability",
     "DetectionModelsResponse",

backend/app/schemas/grb_refresh.py

@@ -0,0 +1,63 @@
+from __future__ import annotations
+
+from datetime import date, datetime
+from typing import Literal
+from uuid import UUID
+
+from pydantic import BaseModel
+
+
+GrbRefreshLayerStatus = Literal[
+    "current",
+    "update_available",
+    "not_loaded",
+    "review_required",
+    "remote_unavailable",
+]
+
+
+class GrbRefreshLayerPlan(BaseModel):
+    theme: Literal["buildings", "roads", "water", "parcels"]
+    display_name: str
+    collections: list[str]
+    temporal_series_key: str
+    status: GrbRefreshLayerStatus
+    local_dataset_id: UUID | None = None
+    local_source_version: str | None = None
+    local_observed_at: datetime | None = None
+    local_imported_at: datetime | None = None
+    local_feature_count: int | None = None
+    local_size_bytes: int | None = None
+    retained_after_refresh: bool = True
+    action_message: str
+
+
+class GrbRefreshPlanSummary(BaseModel):
+    layer_count: int
+    current_count: int
+    update_available_count: int
+    not_loaded_count: int
+    review_required_count: int
+    remote_unavailable_count: int
+    new_dataset_count_if_applied: int
+    retained_dataset_count: int
+    current_feature_count: int
+    current_size_bytes: int
+
+
+class GrbRefreshPlan(BaseModel):
+    project_id: UUID
+    scope: str
+    generated_at: datetime
+    remote_status: str
+    remote_version: str | None = None
+    remote_edition_date: date | None = None
+    catalog_checked_at: datetime | None = None
+    summary: GrbRefreshPlanSummary
+    layers: list[GrbRefreshLayerPlan]
+    execution_mode: Literal["operator_stage_then_apply"] = "operator_stage_then_apply"
+    staging_required: bool = True
+    automatic_import: bool = False
+    destructive_replacement: bool = False
+    message: str
+    limitations: list[str]