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/store/memory_domain_cache.go

@@ -0,0 +1,41 @@
+package store
+
+import (
+	"strings"
+	"time"
+)
+
+func (m *Memory) GetDomainResolveCache(fqdn string) (*DomainResolveCacheEntry, bool, error) {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	if m.domainResolveCache == nil {
+		return nil, false, nil
+	}
+	e, ok := m.domainResolveCache[strings.ToLower(strings.TrimSpace(fqdn))]
+	if !ok || e == nil {
+		return nil, false, nil
+	}
+	return &DomainResolveCacheEntry{
+		FQDN:       e.FQDN,
+		Addrs:      append([]string(nil), e.Addrs...),
+		ResolvedAt: e.ResolvedAt,
+	}, true, nil
+}
+
+func (m *Memory) SetDomainResolveCache(fqdn string, addrs []string) error {
+	key := strings.ToLower(strings.TrimSpace(fqdn))
+	if key == "" {
+		return ErrInvalidInput
+	}
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	if m.domainResolveCache == nil {
+		m.domainResolveCache = make(map[string]*DomainResolveCacheEntry)
+	}
+	m.domainResolveCache[key] = &DomainResolveCacheEntry{
+		FQDN:       key,
+		Addrs:      append([]string(nil), addrs...),
+		ResolvedAt: time.Now().UTC(),
+	}
+	return nil
+}