/**
 * @tactical-media-broadcast-hub/scheduling — shared schedule time semantics (WP3, reused by WP13).
 *
 * A schedule is a five-field cron expression plus an explicit IANA timezone
 * (never server-local; UTC allowed). Occurrences are evaluated in that zone as
 * nominal local times, then materialized to UTC fire instants. The occurrence
 * key is the materialized UTC instant, so `UNIQUE (workspace_id, schedule_id,
 * fire_at_utc)` holds by construction.
 *
 * - DST gap: a nonexistent local time fires at the first valid instant after
 *   the gap (shift forward).
 * - DST fold: an ambiguous local time fires once, at its earlier instant.
 * - Collapse: several nominal local times mapping onto one post-gap instant
 *   yield exactly one occurrence.
 * - Re-materialization on tzdata/timezone change deletes unclaimed future
 *   occurrences and regenerates only strictly-later slots, never refiring a
 *   slot already fired under the old zone.
 *
 * Pure functions only: no app, DB or Temporal imports.
 */
export {
  SchedulingError,
  InvalidCronError,
  InvalidTimezoneError,
  InvalidNominalLocalError,
  InvalidInstantError,
  ImpossibleScheduleError,
} from "./errors.js";
export {
  canonicalTimezone,
  isValidTimezone,
  assertValidTimezone,
  wallOfInstant,
  offsetMs,
  toInstantMs,
  currentTzdataVersion,
  epochOfWall,
} from "./timezone.js";
export type { WallClock, NominalLocal } from "./timezone.js";
export { parseCron, cronMatchesDay, cronMatchesTime, FIELD_NAMES } from "./cron.js";
export type { ParsedCron, CronField } from "./cron.js";
export { formatNominal, parseNominal, compareWall, wallEquals, wallAsEpochMs } from "./nominal.js";
export { resolveWallToInstant } from "./materialize.js";
export { materializeOccurrence } from "./materialize-api.js";
export {
  prepareSchedule,
  sortedHours,
  sortedMinutes,
  slotNominal,
  matchingLocalDays,
  stepOneLocalDay,
} from "./schedule.js";
export type { ScheduleSpec, Occurrence, PreparedSchedule } from "./schedule.js";
export { nextOccurrencesPrepared } from "./occurrences.js";
export type { NextOccurrencesOptions } from "./occurrences.js";
export { nextOccurrences, materializeOccurrences } from "./occurrences_extra.js";
export { rematerialize } from "./rematerialize.js";
export type { StoredOccurrence, RematerializeOptions, RematerializeResult } from "./rematerialize.js";