feat: healthcheck backend and fix data types

also small various features

frontend/composables/useApi.ts

@@ -1,13 +1,55 @@
+const RETRY_DELAYS = [0, 500, 1500]
+const CACHE_TTL_MS = 24 * 60 * 60 * 1000
+
+function cacheKey(url: string) {
+  return `nids_cache:${url}`
+}
+
+function saveToCache(url: string, data: unknown) {
+  try {
+    localStorage.setItem(cacheKey(url), JSON.stringify({ data, ts: Date.now() }))
+  } catch {}
+}
+
+function loadFromCache<T>(url: string): T | null {
+  try {
+    const raw = localStorage.getItem(cacheKey(url))
+    if (!raw) return null
+    const { data, ts } = JSON.parse(raw)
+    if (Date.now() - ts > CACHE_TTL_MS) return null
+    return data as T
+  } catch {
+    return null
+  }
+}
+
 // Базовый fetch к Go API
 export function useApi() {
-  async function get<T>(path: string, params?: Record<string, string | number>) {
+  async function get<T>(path: string, params?: Record<string, string | number>): Promise<T> {
     const url = new URL('/api' + path, window.location.origin)
     if (params) {
       Object.entries(params).forEach(([k, v]) => url.searchParams.set(k, String(v)))
     }
-    const res = await fetch(url.toString())
+    const urlStr = url.toString()
-    if (!res.ok) throw new Error(await res.text())
+
-    return res.json() as Promise<T>
+    let lastErr: unknown
+    for (let i = 0; i < RETRY_DELAYS.length; i++) {
+      if (i > 0) await new Promise(r => setTimeout(r, RETRY_DELAYS[i]))
+      try {
+        const res = await fetch(urlStr, { signal: AbortSignal.timeout(5000) })
+        if (!res.ok) throw new Error(await res.text())
+        const data = await res.json() as T
+        saveToCache(urlStr, data)
+        return data
+      } catch (e) {
+        lastErr = e
+      }
+    }
+
+    const cached = loadFromCache<T>(urlStr)
+    if (cached !== null) return cached
+
+    throw lastErr
   }
 
   async function post<T>(path: string, body?: unknown) {

frontend/composables/useBackendStatus.ts

@@ -0,0 +1,24 @@
+// Singleton: один interval на всё приложение
+let checkInterval: number | null = null
+const isOnline = ref<boolean>(true)
+
+export function useBackendStatus() {
+  async function check() {
+    try {
+      const res = await fetch('/api/health', { signal: AbortSignal.timeout(3000) })
+      isOnline.value = res.ok
+    } catch {
+      isOnline.value = false
+    }
+  }
+
+  function startPolling() {
+    if (checkInterval || !import.meta.client) return
+    check()
+    checkInterval = window.setInterval(check, 5000)
+  }
+
+  onMounted(startPolling)
+
+  return { isOnline, check }
+}

frontend/layouts/default.vue

@@ -31,8 +31,8 @@
         </NuxtLink>
       </nav>
 
-      <!-- Status indicator -->
+      <!-- Status indicators -->
-      <div class="px-4 py-4 border-t border-gray-800">
+      <div class="px-4 py-4 border-t border-gray-800 space-y-2">
         <div class="flex items-center gap-2">
           <span
             class="w-2 h-2 rounded-full shrink-0"
@@ -42,6 +42,15 @@
             {{ captureRunning ? 'Захват активен' : 'Захват остановлен' }}
           </span>
         </div>
+        <div class="flex items-center gap-2">
+          <span
+            class="w-2 h-2 rounded-full shrink-0"
+            :class="isOnline ? 'bg-green-400' : 'bg-red-500 animate-pulse'"
+          />
+          <span class="text-xs" :class="isOnline ? 'text-gray-400' : 'text-red-400'">
+            {{ isOnline ? 'Бэкенд онлайн' : 'Бэкенд недоступен' }}
+          </span>
+        </div>
       </div>
     </aside>
 
@@ -71,6 +80,15 @@
         </UButton>
       </header>
 
+      <!-- Offline banner -->
+      <div
+        v-if="!isOnline"
+        class="mx-6 mt-4 flex items-center gap-2 text-xs text-yellow-300 bg-yellow-950/50 border border-yellow-800/60 rounded-lg px-3 py-2 shrink-0"
+      >
+        <UIcon name="i-heroicons-signal-slash" class="w-4 h-4 shrink-0" />
+        Бэкенд недоступен — отображаются данные из БД
+      </div>
+
       <!-- Page content -->
       <main class="flex-1 overflow-auto p-6">
         <slot />
@@ -82,6 +100,7 @@
 <script setup lang="ts">
 const route = useRoute()
 const { status, stopCapture } = useCaptureStatus()
+const { isOnline } = useBackendStatus()
 
 const captureRunning = computed(() => status.value?.running ?? false)
 

frontend/nuxt.config.ts

@@ -11,9 +11,10 @@ export default defineNuxtConfig({
 
   // Проксируем только маршруты Go бэкенда (не трогаем /api/_nuxt_icon и др. внутренние)
   routeRules: {
-    '/api/alerts/**': { proxy: 'http://localhost:8080/api/alerts/**' },
+    '/api/health':     { proxy: 'http://localhost:8080/api/health' },
-    '/api/alerts':    { proxy: 'http://localhost:8080/api/alerts' },
+    '/api/alerts/**':  { proxy: 'http://localhost:8080/api/alerts/**' },
-    '/api/stats/**':  { proxy: 'http://localhost:8080/api/stats/**' },
+    '/api/alerts':     { proxy: 'http://localhost:8080/api/alerts' },
+    '/api/stats/**':   { proxy: 'http://localhost:8080/api/stats/**' },
     '/api/capture/**': { proxy: 'http://localhost:8080/api/capture/**' },
     '/api/reports/**': { proxy: 'http://localhost:8080/api/reports/**' },
   },

frontend/pages/index.vue

@@ -154,10 +154,13 @@ async function loadAll() {
     get<any>('/stats/top-ips', { limit: 5 }),
     get<any>('/alerts', { page_size: 8 }),
   ])
-  summary.value = sum
+  summary.value = {
+    ...sum,
+    by_type: (sum.by_type ?? []).map((t: any) => ({ ...t, attack_type: t.type })),
+  }
   timeline.value = tl.data ?? []
   topIPs.value = ips.data ?? []
-  recentAlerts.value = alerts.data ?? []
+  recentAlerts.value = (alerts.data ?? []).map((a: any) => ({ ...a, attack_type: a.type }))
 }
 
 onMounted(() => {
@@ -216,10 +219,10 @@ const typesReady = computed(() => summary.value.by_type?.length > 0)
 const typesData = computed(() => {
   const types: any[] = summary.value.by_type ?? []
   return {
-    labels: types.map(t => TYPE_LABELS[t.type] ?? t.type ?? '—'),
+    labels: types.map(t => TYPE_LABELS[t.attack_type] ?? t.attack_type ?? '—'),
     datasets: [{
       data: types.map(t => t.count),
-      backgroundColor: types.map(t => TYPE_COLORS[t.type] ?? '#6b7280'),
+      backgroundColor: types.map(t => TYPE_COLORS[t.attack_type] ?? '#6b7280'),
       borderWidth: 0,
     }],
   }

internal/api/server.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"fmt"
+	"net/http"
 
 	"dip-ids/internal/analyzer"
 	"dip-ids/internal/api/handlers"
@@ -27,7 +28,7 @@ func New(
 	r.Use(gin.Recovery())
 	r.Use(corsMiddleware())
 	r.Use(gin.LoggerWithConfig(gin.LoggerConfig{
-		SkipPaths: []string{"/api/capture/status"},
+		SkipPaths: []string{"/api/capture/status", "/api/health"},
 	}))
 
 	alertsH := handlers.NewAlertsHandler(db)
@@ -37,6 +38,10 @@ func New(
 
 	api := r.Group("/api")
 
+	api.GET("/health", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{"ok": true})
+	})
+
 	api.GET("/alerts", alertsH.GetAlerts)
 	api.DELETE("/alerts", alertsH.ClearAlerts)
 	api.DELETE("/alerts/:id", alertsH.DeleteAlert)

internal/report/pdf.go

@@ -15,6 +15,7 @@ import (
 	"github.com/johnfercher/maroto/v2/pkg/components/text"
 	"github.com/johnfercher/maroto/v2/pkg/config"
 	"github.com/johnfercher/maroto/v2/pkg/consts/align"
+	"github.com/johnfercher/maroto/v2/pkg/consts/border"
 	"github.com/johnfercher/maroto/v2/pkg/consts/fontstyle"
 	"github.com/johnfercher/maroto/v2/pkg/core"
 	"github.com/johnfercher/maroto/v2/pkg/props"
@@ -33,7 +34,6 @@ type Data struct {
 	RecentStats    []storage.PacketStat
 }
 
-// Пути к шрифту DejaVu Sans с поддержкой кириллицы
 var cyrillicFontCandidates = []string{
 	"/usr/share/fonts/TTF/DejaVuSans.ttf",
 	"/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
@@ -59,6 +59,17 @@ func findFont(candidates []string) string {
 
 const fontFamily = "DejaVu"
 
+// цветовая палитра
+var (
+	colorBlue      = &props.Color{Red: 37, Green: 99, Blue: 235}
+	colorBlueDark  = &props.Color{Red: 30, Green: 64, Blue: 175}
+	colorWhite     = &props.Color{Red: 255, Green: 255, Blue: 255}
+	colorGray100   = &props.Color{Red: 248, Green: 250, Blue: 252}
+	colorGray200   = &props.Color{Red: 226, Green: 232, Blue: 240}
+	colorGray500   = &props.Color{Red: 100, Green: 116, Blue: 139}
+	colorGray700   = &props.Color{Red: 55, Green: 65, Blue: 81}
+)
+
 // Generate создаёт PDF-отчёт и возвращает байты
 func Generate(d Data) ([]byte, error) {
 	normalFont := findFont(cyrillicFontCandidates)
@@ -71,14 +82,19 @@ func Generate(d Data) ([]byte, error) {
 		WithBottomMargin(15)
 
 	if normalFont != "" && boldFont != "" {
-		builder = builder.
+		fonts, err := repository.New().
-			WithCustomFonts([]*entity.CustomFont{
+			AddUTF8Font(fontFamily, fontstyle.Normal, normalFont).
-				{Family: fontFamily, Style: fontstyle.Normal, File: normalFont},
+			AddUTF8Font(fontFamily, fontstyle.Bold, boldFont).
-				{Family: fontFamily, Style: fontstyle.Bold, File: boldFont},
+			AddUTF8Font(fontFamily, fontstyle.Italic, normalFont).
-				{Family: fontFamily, Style: fontstyle.Italic, File: normalFont},
+			AddUTF8Font(fontFamily, fontstyle.BoldItalic, boldFont).
-				{Family: fontFamily, Style: fontstyle.BoldItalic, File: boldFont},
+			Load()
-			}).
+		if err != nil {
-			WithDefaultFont(&props.Font{Family: fontFamily, Size: 9})
+			log.Printf("[report] failed to load DejaVu font: %v", err)
+		} else {
+			builder = builder.
+				WithCustomFonts(fonts).
+				WithDefaultFont(&props.Font{Family: fontFamily, Size: 9})
+		}
 	} else {
 		log.Println("[report] DejaVu font not found, Cyrillic may not render. Install ttf-dejavu.")
 	}
@@ -87,45 +103,54 @@ func Generate(d Data) ([]byte, error) {
 
 	// ── Заголовок ─────────────────────────────────────────────────────────────
 	m.AddRows(buildHeader(d)...)
-	m.AddRow(3, line.NewCol(12, props.Line{Color: &props.Color{Red: 37, Green: 99, Blue: 235}}))
+	m.AddRow(2, line.NewCol(12, props.Line{Color: colorBlue, Thickness: 0.5}))
 	m.AddRows(buildMeta(d)...)
-	m.AddRow(5)
+	m.AddRow(6)
 
 	// ── Сводка по критичности ─────────────────────────────────────────────────
 	m.AddRows(buildSectionTitle("1. Сводка по уровням критичности")...)
+	m.AddRow(2)
 	m.AddRows(buildSeverityTable(d.BySeverity)...)
-	m.AddRow(4)
+	m.AddRow(6)
 
 	// ── Типы угроз ────────────────────────────────────────────────────────────
 	m.AddRows(buildSectionTitle("2. Типы обнаруженных угроз")...)
+	m.AddRow(2)
 	m.AddRows(buildTypeTable(d.ByType)...)
-	m.AddRow(4)
+	m.AddRow(6)
 
 	// ── Топ источников ────────────────────────────────────────────────────────
 	if len(d.TopIPs) > 0 {
 		m.AddRows(buildSectionTitle("3. Топ источников атак")...)
+		m.AddRow(2)
 		m.AddRows(buildTopIPsTable(d.TopIPs)...)
-		m.AddRow(4)
+		m.AddRow(6)
 	}
 
 	// ── Статистика трафика по протоколам ──────────────────────────────────────
 	if len(d.TrafficByProto) > 0 {
 		m.AddRows(buildSectionTitle("4. Статистика трафика по протоколам")...)
+		m.AddRow(2)
 		m.AddRows(buildTrafficProtoTable(d.TrafficByProto)...)
-		m.AddRow(4)
+		m.AddRow(6)
 	}
 
 	// ── Лог трафика (последние записи) ────────────────────────────────────────
 	if len(d.RecentStats) > 0 {
-		m.AddRows(buildSectionTitle(fmt.Sprintf("5. Журнал трафика (последние %d записей)", len(d.RecentStats)))...)
+		limit := len(d.RecentStats)
+		if limit > 100 {
+			limit = 100
+		}
+		m.AddRows(buildSectionTitle(fmt.Sprintf("5. Журнал трафика (последние %d записей)", limit))...)
+		m.AddRow(2)
 		m.AddRows(buildTrafficLogHeader()...)
 		for i, s := range d.RecentStats {
 			if i >= 100 {
 				break
 			}
-			m.AddRows(buildTrafficLogRow(s)...)
+			m.AddRows(buildTrafficLogRow(s, i)...)
 		}
-		m.AddRow(4)
+		m.AddRow(6)
 	}
 
 	// ── Журнал инцидентов ─────────────────────────────────────────────────────
@@ -134,12 +159,13 @@ func Generate(d Data) ([]byte, error) {
 		sectionNum = 4
 	}
 	m.AddRows(buildSectionTitle(fmt.Sprintf("%d. Журнал инцидентов", sectionNum))...)
+	m.AddRow(2)
 	m.AddRows(buildAlertsTableHeader()...)
 	for i, a := range d.Alerts {
 		if i >= 200 {
 			break
 		}
-		m.AddRows(buildAlertRow(a)...)
+		m.AddRows(buildAlertRow(a, i)...)
 	}
 
 	doc, err := m.Generate()
@@ -149,21 +175,22 @@ func Generate(d Data) ([]byte, error) {
 	return doc.GetBytes(), nil
 }
 
-// ── Секции отчёта ─────────────────────────────────────────────────────────────
+// ── Заголовок отчёта ──────────────────────────────────────────────────────────
 
 func buildHeader(d Data) []core.Row {
 	return []core.Row{
-		row.New(14).Add(
+		row.New(10).Add(
 			col.New(8).Add(
 				text.New("СИСТЕМА ОБНАРУЖЕНИЯ ВТОРЖЕНИЙ", props.Text{
-					Size:  16,
+					Size:  14,
 					Style: fontstyle.Bold,
-					Color: &props.Color{Red: 37, Green: 99, Blue: 235},
+					Color: colorBlue,
+					Top:   1,
 				}),
 				text.New("Отчёт об инцидентах сетевой безопасности", props.Text{
 					Size:  9,
-					Top:   8,
+					Top:   7,
-					Color: &props.Color{Red: 100, Green: 100, Blue: 100},
+					Color: colorGray500,
 				}),
 			),
 			col.New(4).Add(
@@ -171,13 +198,14 @@ func buildHeader(d Data) []core.Row {
 					Size:  9,
 					Align: align.Right,
 					Style: fontstyle.Bold,
-					Color: &props.Color{Red: 37, Green: 99, Blue: 235},
+					Color: colorBlue,
+					Top:   1,
 				}),
 				text.New(fmt.Sprintf("Дата: %s", d.GeneratedAt.Format("02.01.2006 15:04:05")), props.Text{
 					Size:  8,
-					Top:   5,
+					Top:   6,
 					Align: align.Right,
-					Color: &props.Color{Red: 120, Green: 120, Blue: 120},
+					Color: colorGray500,
 				}),
 			),
 		),
@@ -197,38 +225,52 @@ func buildMeta(d Data) []core.Row {
 			duration = "активна"
 		}
 	}
-	return []core.Row{
+	r := row.New(8).Add(
-		row.New(5).Add(
+		col.New(3).Add(metaCell("Источник", source)),
-			col.New(3).Add(metaCell("Источник", source)),
+		col.New(3).Add(metaCell("Режим", mode)),
-			col.New(3).Add(metaCell("Режим", mode)),
+		col.New(3).Add(metaCell("Длительность", duration)),
-			col.New(3).Add(metaCell("Длительность", duration)),
+		col.New(3).Add(metaCell("Пакетов / Объём", pkts+" / "+bytes)),
-			col.New(3).Add(metaCell("Пакетов / Объём", pkts+" / "+bytes)),
+	)
-		),
+	r.WithStyle(&props.Cell{
-	}
+		BackgroundColor: colorGray100,
+		BorderColor:     colorGray200,
+		BorderType:      border.Full,
+		BorderThickness: 0.3,
+	})
+	return []core.Row{r}
 }
 
 func metaCell(label, value string) core.Component {
 	return text.New(label+": "+value, props.Text{
 		Size:  8,
-		Color: &props.Color{Red: 80, Green: 80, Blue: 80},
+		Left:  2,
+		Top:   2,
+		Color: colorGray700,
 	})
 }
 
 func buildSectionTitle(title string) []core.Row {
-	return []core.Row{
+	r := row.New(8).Add(
-		row.New(8).Add(
+		col.New(12).Add(
-			col.New(12).Add(
+			text.New(title, props.Text{
-				text.New(title, props.Text{
+				Size:  10,
-					Size:  11,
+				Style: fontstyle.Bold,
-					Style: fontstyle.Bold,
+				Color: colorBlueDark,
-					Color: &props.Color{Red: 37, Green: 99, Blue: 235},
+				Left:  1,
-				}),
+				Top:   2,
-			),
+			}),
 		),
-	}
+	)
+	r.WithStyle(&props.Cell{
+		BackgroundColor: &props.Color{Red: 239, Green: 246, Blue: 255},
+		BorderColor:     colorBlue,
+		BorderType:      border.Left,
+		BorderThickness: 2,
+	})
+	return []core.Row{r}
 }
 
-// ── Таблицы сводки ────────────────────────────────────────────────────────────
+// ── Таблицы ───────────────────────────────────────────────────────────────────
 
 func buildSeverityTable(data []storage.SeverityCount) []core.Row {
 	rows := []core.Row{tableHeaderRow([]colDef{
@@ -239,13 +281,23 @@ func buildSeverityTable(data []storage.SeverityCount) []core.Row {
 	for _, s := range data {
 		counts[s.Severity] = s.Count
 	}
-	for _, sev := range []string{"critical", "high", "medium", "low"} {
+	for i, sev := range []string{"critical", "high", "medium", "low"} {
-		rows = append(rows, row.New(6).Add(
+		r := row.New(7).Add(
 			col.New(6).Add(text.New(severityLabel(sev), props.Text{
-				Size: 9, Style: fontstyle.Bold, Color: severityColor(sev),
+				Size:  9,
+				Style: fontstyle.Bold,
+				Color: severityColor(sev),
+				Left:  2,
+				Top:   2,
 			})),
-			col.New(6).Add(text.New(fmt.Sprintf("%d", counts[sev]), props.Text{Size: 9})),
+			col.New(6).Add(text.New(fmt.Sprintf("%d", counts[sev]), props.Text{
-		))
+				Size: 9,
+				Left: 2,
+				Top:  2,
+			})),
+		)
+		r.WithStyle(dataRowStyle(i))
+		rows = append(rows, r)
 	}
 	return rows
 }
@@ -255,11 +307,13 @@ func buildTypeTable(data []storage.TypeCount) []core.Row {
 		{w: 6, label: "Тип атаки"},
 		{w: 6, label: "Количество"},
 	})}
-	for _, t := range data {
+	for i, t := range data {
-		rows = append(rows, row.New(6).Add(
+		r := row.New(7).Add(
-			col.New(6).Add(text.New(typeLabel(t.Type), props.Text{Size: 9})),
+			col.New(6).Add(text.New(typeLabel(t.Type), props.Text{Size: 9, Left: 2, Top: 2})),
-			col.New(6).Add(text.New(fmt.Sprintf("%d", t.Count), props.Text{Size: 9})),
+			col.New(6).Add(text.New(fmt.Sprintf("%d", t.Count), props.Text{Size: 9, Left: 2, Top: 2})),
-		))
+		)
+		r.WithStyle(dataRowStyle(i))
+		rows = append(rows, r)
 	}
 	return rows
 }
@@ -267,39 +321,39 @@ func buildTypeTable(data []storage.TypeCount) []core.Row {
 func buildTopIPsTable(data []storage.IPCount) []core.Row {
 	rows := []core.Row{tableHeaderRow([]colDef{
 		{w: 1, label: "#"},
-		{w: 7, label: "IP-адрес источника"},
+		{w: 8, label: "IP-адрес источника"},
-		{w: 4, label: "Алертов"},
+		{w: 3, label: "Алертов"},
 	})}
 	for i, ip := range data {
-		rows = append(rows, row.New(6).Add(
+		r := row.New(7).Add(
-			col.New(1).Add(text.New(fmt.Sprintf("%d", i+1), props.Text{Size: 8})),
+			col.New(1).Add(text.New(fmt.Sprintf("%d", i+1), props.Text{Size: 8, Left: 2, Top: 2})),
-			col.New(7).Add(text.New(ip.SrcIP, props.Text{Size: 8})),
+			col.New(8).Add(text.New(ip.SrcIP, props.Text{Size: 8, Left: 2, Top: 2})),
-			col.New(4).Add(text.New(fmt.Sprintf("%d", ip.Count), props.Text{Size: 8})),
+			col.New(3).Add(text.New(fmt.Sprintf("%d", ip.Count), props.Text{Size: 8, Left: 2, Top: 2})),
-		))
+		)
+		r.WithStyle(dataRowStyle(i))
+		rows = append(rows, r)
 	}
 	return rows
 }
 
-// ── Таблица трафика по протоколам ─────────────────────────────────────────────
-
 func buildTrafficProtoTable(data []storage.ProtocolCount) []core.Row {
 	rows := []core.Row{tableHeaderRow([]colDef{
 		{w: 4, label: "Протокол"},
 		{w: 4, label: "Пакетов"},
 		{w: 4, label: "Объём трафика"},
 	})}
-	for _, p := range data {
+	for i, p := range data {
-		rows = append(rows, row.New(6).Add(
+		r := row.New(7).Add(
-			col.New(4).Add(text.New(p.Protocol, props.Text{Size: 9, Style: fontstyle.Bold})),
+			col.New(4).Add(text.New(p.Protocol, props.Text{Size: 9, Style: fontstyle.Bold, Left: 2, Top: 2})),
-			col.New(4).Add(text.New(fmt.Sprintf("%d", p.Count), props.Text{Size: 9})),
+			col.New(4).Add(text.New(fmt.Sprintf("%d", p.Count), props.Text{Size: 9, Left: 2, Top: 2})),
-			col.New(4).Add(text.New(humanBytes(p.Bytes), props.Text{Size: 9})),
+			col.New(4).Add(text.New(humanBytes(p.Bytes), props.Text{Size: 9, Left: 2, Top: 2})),
-		))
+		)
+		r.WithStyle(dataRowStyle(i))
+		rows = append(rows, r)
 	}
 	return rows
 }
 
-// ── Журнал трафика ────────────────────────────────────────────────────────────
-
 func buildTrafficLogHeader() []core.Row {
 	return []core.Row{tableHeaderRow([]colDef{
 		{w: 3, label: "Время"},
@@ -309,41 +363,43 @@ func buildTrafficLogHeader() []core.Row {
 	})}
 }
 
-func buildTrafficLogRow(s storage.PacketStat) []core.Row {
+func buildTrafficLogRow(s storage.PacketStat, idx int) []core.Row {
-	return []core.Row{
+	r := row.New(6).Add(
-		row.New(5).Add(
+		col.New(3).Add(text.New(s.CreatedAt.Format("02.01 15:04:05"), props.Text{Size: 7, Left: 2, Top: 1})),
-			col.New(3).Add(text.New(s.CreatedAt.Format("02.01 15:04:05"), props.Text{Size: 7})),
+		col.New(2).Add(text.New(s.Protocol, props.Text{Size: 7, Style: fontstyle.Bold, Left: 2, Top: 1})),
-			col.New(2).Add(text.New(s.Protocol, props.Text{Size: 7, Style: fontstyle.Bold})),
+		col.New(4).Add(text.New(s.SrcIP, props.Text{Size: 7, Left: 2, Top: 1})),
-			col.New(4).Add(text.New(s.SrcIP, props.Text{Size: 7})),
+		col.New(3).Add(text.New(s.DstIP+" "+humanBytes(s.Bytes), props.Text{Size: 7, Left: 2, Top: 1})),
-			col.New(3).Add(text.New(s.DstIP+" "+humanBytes(s.Bytes), props.Text{Size: 7})),
+	)
-		),
+	r.WithStyle(dataRowStyle(idx))
-	}
+	return []core.Row{r}
 }
 
-// ── Журнал инцидентов ─────────────────────────────────────────────────────────
-
 func buildAlertsTableHeader() []core.Row {
 	return []core.Row{tableHeaderRow([]colDef{
 		{w: 3, label: "Дата/Время"},
 		{w: 2, label: "Тип"},
 		{w: 2, label: "Критичность"},
-		{w: 2, label: "Источник"},
+		{w: 3, label: "Источник"},
-		{w: 3, label: "Описание"},
+		{w: 2, label: "Описание"},
 	})}
 }
 
-func buildAlertRow(a storage.Alert) []core.Row {
+func buildAlertRow(a storage.Alert, idx int) []core.Row {
-	return []core.Row{
+	r := row.New(7).Add(
-		row.New(6).Add(
+		col.New(3).Add(text.New(a.CreatedAt.Format("02.01.06 15:04"), props.Text{Size: 7, Left: 2, Top: 2})),
-			col.New(3).Add(text.New(a.CreatedAt.Format("02.01.06 15:04:05"), props.Text{Size: 7})),
+		col.New(2).Add(text.New(typeLabel(a.Type), props.Text{Size: 7, Left: 2, Top: 2})),
-			col.New(2).Add(text.New(typeLabel(a.Type), props.Text{Size: 7})),
+		col.New(2).Add(text.New(severityLabel(a.Severity), props.Text{
-			col.New(2).Add(text.New(severityLabel(a.Severity), props.Text{
+			Size:  7,
-				Size: 7, Style: fontstyle.Bold, Color: severityColor(a.Severity),
+			Style: fontstyle.Bold,
-			})),
+			Color: severityColor(a.Severity),
-			col.New(2).Add(text.New(a.SrcIP, props.Text{Size: 7})),
+			Left:  2,
-			col.New(3).Add(text.New(truncate(a.Description, 60), props.Text{Size: 7})),
+			Top:   2,
-		),
+		})),
-	}
+		col.New(3).Add(text.New(a.SrcIP, props.Text{Size: 7, Left: 2, Top: 2})),
+		col.New(2).Add(text.New(truncate(a.Description, 40), props.Text{Size: 7, Left: 2, Top: 2})),
+	)
+	r.WithStyle(dataRowStyle(idx))
+	return []core.Row{r}
 }
 
 // ── Вспомогательные типы и функции ───────────────────────────────────────────
@@ -360,11 +416,33 @@ func tableHeaderRow(cols []colDef) core.Row {
 			text.New(c.label, props.Text{
 				Size:  9,
 				Style: fontstyle.Bold,
-				Color: &props.Color{Red: 255, Green: 255, Blue: 255},
+				Color: colorWhite,
+				Left:  2,
+				Top:   2,
 			}),
 		))
 	}
-	return row.New(7).Add(cells...)
+	r := row.New(8).Add(cells...)
+	r.WithStyle(&props.Cell{
+		BackgroundColor: colorBlue,
+		BorderColor:     colorBlueDark,
+		BorderType:      border.Full,
+		BorderThickness: 0.3,
+	})
+	return r
+}
+
+func dataRowStyle(idx int) *props.Cell {
+	bg := colorWhite
+	if idx%2 == 0 {
+		bg = colorGray100
+	}
+	return &props.Cell{
+		BackgroundColor: bg,
+		BorderColor:     colorGray200,
+		BorderType:      border.Bottom,
+		BorderThickness: 0.3,
+	}
 }
 
 func severityLabel(s string) string {
@@ -433,8 +511,9 @@ func humanBytes(b int64) string {
 }
 
 func truncate(s string, n int) string {
-	if len([]rune(s)) <= n {
+	runes := []rune(s)
+	if len(runes) <= n {
 		return s
 	}
-	return string([]rune(s)[:n-3]) + "..."
+	return string(runes[:n-3]) + "..."
 }

internal/storage/db.go

@@ -87,8 +87,8 @@ func (d *DB) CreatePacketStat(s *PacketStat) error {
 }
 
 type SeverityCount struct {
-	Severity string
+	Severity string `json:"severity"`
-	Count    int64
+	Count    int64  `json:"count"`
 }
 
 func (d *DB) AlertsBySeverity() ([]SeverityCount, error) {
@@ -101,8 +101,8 @@ func (d *DB) AlertsBySeverity() ([]SeverityCount, error) {
 }
 
 type TypeCount struct {
-	Type  string
+	Type  string `json:"type"`
-	Count int64
+	Count int64  `json:"count"`
 }
 
 func (d *DB) AlertsByType() ([]TypeCount, error) {
@@ -115,8 +115,8 @@ func (d *DB) AlertsByType() ([]TypeCount, error) {
 }
 
 type IPCount struct {
-	SrcIP string
+	SrcIP string `json:"src_ip"`
-	Count int64
+	Count int64  `json:"count"`
 }
 
 func (d *DB) TopSourceIPs(limit int) ([]IPCount, error) {
@@ -131,16 +131,16 @@ func (d *DB) TopSourceIPs(limit int) ([]IPCount, error) {
 }
 
 type TimelinePoint struct {
-	Hour  string
+	Hour  string `json:"hour"`
-	Count int64
+	Count int64  `json:"count"`
 }
 
 func (d *DB) AlertsTimeline(hours int) ([]TimelinePoint, error) {
-	since := time.Now().Add(-time.Duration(hours) * time.Hour)
+	since := time.Now().UTC().Add(-time.Duration(hours) * time.Hour)
 	var result []TimelinePoint
 	err := d.db.Model(&Alert{}).
-		Select("strftime('%Y-%m-%dT%H:00:00', created_at) as hour, count(*) as count").
+		Select("strftime('%Y-%m-%dT%H:00:00Z', created_at) as hour, count(*) as count").
-		Where("created_at >= ?", since).
+		Where("created_at >= datetime(?)", since.Format("2006-01-02 15:04:05")).
 		Group("hour").
 		Order("hour asc").
 		Find(&result).Error
@@ -154,9 +154,9 @@ func (d *DB) TotalAlerts() (int64, error) {
 }
 
 type ProtocolCount struct {
-	Protocol string
+	Protocol string `json:"protocol"`
-	Count    int64
+	Count    int64  `json:"count"`
-	Bytes    int64
+	Bytes    int64  `json:"bytes"`
 }
 
 func (d *DB) TrafficByProtocol() ([]ProtocolCount, error) {