refactor(maintenance): remove hardcoded retention and wire scheduler

RunPeriodicMaintenance и RunCleanup удалены; scheduler политик в StartBackground; deprecated /postgres/cleanup принимает policy_id.

Co-authored-by: Cursor <[email protected]>

internal/jobs/postgres_worker.go

@@ -2,7 +2,6 @@ package jobs
 
 import (
 	"fmt"
-	"strings"
 
 	"evobgp/internal/pgmonitor"
 )
@@ -118,35 +117,7 @@ func (w *Worker) runPostgresMaint(j *Job, kind string) {
 }
 
 func (w *Worker) runPostgresCleanup(j *Job) {
-	if w == nil || w.PgPool == nil {
-		j.Fail("postgresql not configured")
-		return
-	}
-	policy, _ := j.Meta["policy"].(string)
-	dryRun, _ := j.Meta["dry_run"].(bool)
-	limit := 0
-	if v, ok := j.Meta["limit"].(float64); ok {
-		limit = int(v)
-	}
-	actor, _ := j.Meta["actor_prefix"].(string)
-	ctx, cancel := j.workContext()
-	defer cancel()
-	auditID, _ := pgmonitor.InsertMaintenanceAudit(ctx, w.PgPool, j.TenantID, actor, "cleanup", policy, dryRun)
-	detail, err := pgmonitor.RunCleanup(ctx, w.PgPool, strings.TrimSpace(policy), dryRun, limit)
-	var errMsg *string
-	status := StatusSucceeded
-	if err != nil {
-		s := err.Error()
-		errMsg = &s
-		status = StatusFailed
-		j.Fail(s)
-	} else {
-		j.mergeMeta(map[string]any{"cleanup": detail, "audit_id": auditID})
-		j.Succeed()
-	}
-	if auditID != "" {
-		_ = pgmonitor.FinishMaintenanceAudit(ctx, w.PgPool, auditID, status, detail, errMsg)
-	}
+	j.Fail("postgres_cleanup deprecated: configure maintenance_policy in UI and use maintenance_policy_run")
 }
 
 // EnqueuePostgresAnalyzerJobs enqueues periodic analyzer jobs (global tenant id).