Add schedule sync and schedule-aware playback

src/network/proclamation_sync.h

@@ -23,9 +23,18 @@ bool parseGroupsJson(const std::string& body,
 // the DB, preserving any existing selection and forcing `defaultProclamationId`
 // to stay selected. Returns true only if the API sync succeeded; on failure the
 // database is left untouched so the app can fall back to cached data.
+//
+// Also requests the user's schedule and replaces the stored schedule when the
+// device has an email + license key. Schedule sync is best-effort: a schedule
+// failure never fails (or rolls back) the proclamation sync.
 bool syncProclamationsFromApi(radiantwave::db::DatabaseManager& db,
                               const std::string& defaultProclamationId);
 
+// Fetch GET /schedule for the device's paired email + license key and replace
+// the stored schedule blocks. Skips (returns false) when either credential is
+// missing. Returns true only on HTTP 2xx + successful parse + successful store.
+bool syncScheduleFromApi(radiantwave::db::DatabaseManager& db);
+
 // Parse color palettes embedded in the proclamations JSON payload. Each
 // proclamation object may carry a "colorPalette" array of "#RRGGBB" strings;
 // the palette is keyed by the proclamation's solfeggioFrequencyId. When