feat(domain): subscription grouping, coverage row states, auto-fill resolution and fill budget

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/domain/src/slot/index.ts

@@ -46,6 +46,19 @@ export {
   unitsOverlap,
 } from "./gaps.ts";
 export { busyStatus, type PlanStage, stageAfter, transitionWithInflight } from "./inflight.ts";
+export {
+  type CoverageColumnInput,
+  type CoverageRowCell,
+  type CoverageRowInput,
+  type CoverageRowResult,
+  type CoverageState,
+  type CoveredFact,
+  coverageRow,
+  type SubscriptionGroupInput,
+  type SubscriptionGroupName,
+  type SubscriptionGroupResult,
+  subscriptionGroup,
+} from "./overview.ts";
 export {
   canTransition,
   type SlotEvent,