feat(app): wire acp_events_purge runner into jobs scheduler

internal/app/app.go

@@ -373,6 +373,8 @@ func New(ctx context.Context, cfg *config.Config, dist embed.FS) (*App, error) {
 		log)
 	jobReaperRunner := runners.NewJobReaper(jobsRepo, cfg.Jobs.JobReaper.LeaseTimeout, log)
 	jobPurgeRunner := runners.NewJobPurge(jobsRepo, cfg.Jobs.JobPurge.CompletedRetention, log)
+	acpEventsPurgeRunner := runners.NewAcpEventsPurge(
+		acpEventsPurgeAdapter{repo: acpRepo}, cfg.Jobs.AcpEventsPurge.Retention, log)
 
 	deadLetterFn := func(ctx context.Context, job jobs.Job, herr error) {
 		errMsg := herr.Error()
@@ -443,6 +445,11 @@ func New(ctx context.Context, cfg *config.Config, dist embed.FS) (*App, error) {
 			Interval:           cfg.Jobs.JobPurge.Interval,
 			CompletedRetention: cfg.Jobs.JobPurge.CompletedRetention,
 		},
+		AcpEventsPurge: jobs.AcpEventsPurgeConfig{
+			Enabled:   cfg.Jobs.AcpEventsPurge.Enabled,
+			Interval:  cfg.Jobs.AcpEventsPurge.Interval,
+			Retention: cfg.Jobs.AcpEventsPurge.Retention,
+		},
 	}, jobs.ModuleDeps{
 		Repo: jobsRepo,
 		Handlers: map[jobs.JobType]jobs.Handler{
@@ -454,6 +461,7 @@ func New(ctx context.Context, cfg *config.Config, dist embed.FS) (*App, error) {
 			"attachment_cleanup": attCleanupRunner.Run,
 			"job_reaper":         jobReaperRunner.Run,
 			"job_purge":          jobPurgeRunner.Run,
+			"acp_events_purge":   acpEventsPurgeRunner.Run,
 		},
 		Clock:         clock.Real(),
 		Log:           log,
@@ -803,3 +811,11 @@ type dispatcherAdapter struct{ d *notify.Dispatcher }
 func (a dispatcherAdapter) Dispatch(ctx context.Context, msg notify.Message) error {
 	return a.d.Dispatch(ctx, msg)
 }
+
+// acpEventsPurgeAdapter exposes acp.Repository.PurgeEventsBefore as the narrow
+// interface required by runners.AcpEventsPurge.
+type acpEventsPurgeAdapter struct{ repo acp.Repository }
+
+func (a acpEventsPurgeAdapter) PurgeEventsBefore(ctx context.Context, before time.Time) (int64, error) {
+	return a.repo.PurgeEventsBefore(ctx, before)
+}