Refactor code to use 'any' type and improve context handling

internal/tasks/monthlyAggregate.go

@@ -7,7 +7,7 @@ import (
 	"log/slog"
 	"os"
 	"runtime"
-	"sort"
+	"slices"
 	"strings"
 	"sync"
 	"time"
@@ -246,7 +246,7 @@ func (c *CronTask) aggregateMonthlySummaryGoHourly(ctx context.Context, monthSta
 		for _, snap := range hourlySnapshots {
 			snapTimes = append(snapTimes, snap.SnapshotTime.Unix())
 		}
-		sort.Slice(snapTimes, func(i, j int) bool { return snapTimes[i] < snapTimes[j] })
+		slices.Sort(snapTimes)
 	}
 
 	lifecycleDeletions := c.applyLifecycleDeletions(ctx, aggMap, monthStart, monthEnd)
@@ -394,20 +394,12 @@ func (c *CronTask) aggregateMonthlySummaryGo(ctx context.Context, monthStart, mo
 func (c *CronTask) scanDailyTablesParallel(ctx context.Context, snapshots []report.SnapshotRecord) (map[monthlyAggKey]*monthlyAggVal, error) {
 	agg := make(map[monthlyAggKey]*monthlyAggVal, 1024)
 	mu := sync.Mutex{}
-	workers := runtime.NumCPU()
-	if workers < 2 {
-		workers = 2
-	}
-	if workers > len(snapshots) {
-		workers = len(snapshots)
-	}
+	workers := min(max(runtime.NumCPU(), 2), len(snapshots))
 
 	jobs := make(chan report.SnapshotRecord, len(snapshots))
 	wg := sync.WaitGroup{}
 	for i := 0; i < workers; i++ {
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
+		wg.Go(func() {
 			for snap := range jobs {
 				rows, err := c.scanDailyTable(ctx, snap)
 				if err != nil {
@@ -424,7 +416,7 @@ func (c *CronTask) scanDailyTablesParallel(ctx context.Context, snapshots []repo
 				}
 				mu.Unlock()
 			}
-		}()
+		})
 	}
 	for _, snap := range snapshots {
 		jobs <- snap