feat(11-02): run plugin schedules as River periodic jobs through bonfire.Call

- pact.HasSchedule with ScheduledCommand and Daily/DailyAt/Every cadences (no River import)
- bonfire.Call, Catalog and ErrUnknownCommand for in-process command runs
- conga Daily/Every wall-clock schedules in app.timezone, periodic jobs on every worker,
  scheduled queue (MaxAttempts 1, unique by args within the cadence period)
- scheduled worker runs only entries matching the compiled table; unregistered
  commands are skipped with a Warn log
- generated app main publishes bonfire.NewCatalog(commands); hello main regenerated

examples/hello/main.go

@@ -45,6 +45,9 @@ func run(args []string, out io.Writer) error {
 			commands = append(commands, hasCommands.Commands()...)
 		}
 	}
+	if err := app.Publish(bonfire.NewCatalog(commands)); err != nil {
+		return err
+	}
 	root, err := bonfire.NewRoot("hello", commands, out)
 	if err != nil {
 		return err