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

internal/build/build.go

@@ -121,6 +121,9 @@ func generateMain(m Manifest) ([]byte, error) {
 	b.WriteString("\t\t\tcommands = append(commands, hasCommands.Commands()...)\n")
 	b.WriteString("\t\t}\n")
 	b.WriteString("\t}\n")
+	b.WriteString("\tif err := app.Publish(bonfire.NewCatalog(commands)); err != nil {\n")
+	b.WriteString("\t\treturn err\n")
+	b.WriteString("\t}\n")
 	fmt.Fprintf(&b, "\troot, err := bonfire.NewRoot(%s, commands, out)\n", strconv.Quote(m.Binary))
 	b.WriteString("\tif err != nil {\n")
 	b.WriteString("\t\treturn err\n")