refactor(web): remove deprecated dashboard components and enhance KPI grid

- Deleted unused components: `DashboardActivityTimeline`, `DashboardFramePanel`, `DashboardModulesGrid`, `DashboardRecentJobsGrid`, and `DashboardRecentRevisionsGrid` to streamline the dashboard.
- Updated `DashboardKpiGrid` to improve KPI display logic, including progress indicators and enhanced badge functionality.
- Refactored `DashboardNetworkHealth` to provide better status representation based on loading states and network conditions.
- Introduced new properties for KPI cards to support progress tracking and improved visual feedback.

This cleanup aims to enhance performance and maintainability of the dashboard while providing a better user experience.

internal/pipeline/scheduler_due.go

@@ -1,6 +1,7 @@
 package pipeline
 
 import (
+	"hash/fnv"
 	"time"
 
 	"evobgp/internal/store"
@@ -10,6 +11,8 @@ import (
 const SchedulerTickSec = 30
 
 // ModuleDueForScheduler reports whether a module's refresh interval bucket rolled since the last scheduler tick.
+// A stable per-module offset (fnv32 of ID) spreads bucket boundaries so modules with the same interval
+// do not all become due on the same tick (thundering herd).
 func ModuleDueForScheduler(mod *store.Module, now time.Time) bool {
 	if mod == nil || !mod.Enabled || mod.Type == "IP_RANGES" || mod.RefreshIntervalSec <= 0 {
 		return false
@@ -18,7 +21,21 @@ func ModuleDueForScheduler(mod *store.Module, now time.Time) bool {
 	if win < 60 {
 		win = 60
 	}
-	cur := now.Unix() / win
-	prev := (now.Unix() - SchedulerTickSec) / win
+	offset := moduleSchedulerOffset(mod.ID, win)
+	cur := (now.Unix() - offset) / win
+	prev := (now.Unix() - offset - SchedulerTickSec) / win
 	return cur != prev
 }
+
+func moduleSchedulerOffset(moduleID string, win int64) int64 {
+	if win <= 0 {
+		return 0
+	}
+	return int64(fnv32a(moduleID) % uint32(win))
+}
+
+func fnv32a(s string) uint32 {
+	h := fnv.New32a()
+	_, _ = h.Write([]byte(s))
+	return h.Sum32()
+}