diff --git a/src/app/app.ts b/src/app/app.ts
index d9e97cd..91a460a 100644
--- a/src/app/app.ts
+++ b/src/app/app.ts
@@ -1,11 +1,11 @@
 import { TuiRoot } from '@taiga-ui/core';
 import { Component, isDevMode } from '@angular/core';
-import { RouterLink, RouterOutlet, RouterLinkActive } from '@angular/router';
+import { RouterLink, RouterOutlet } from '@angular/router';
 import { DevConsoleComponent } from './features/devtools/dev-console/dev-console.component';
 
 @Component({
   selector: 'app-root',
-  imports: [RouterLink, RouterLinkActive, RouterOutlet, TuiRoot, DevConsoleComponent],
+  imports: [RouterLink, RouterOutlet, TuiRoot, DevConsoleComponent],
   templateUrl: './app.html',
   styleUrl: './app.css',
 })
diff --git a/src/app/core/http/api-base-url.interceptor.ts b/src/app/core/http/api-base-url.interceptor.ts
index 3a60749..14358de 100644
--- a/src/app/core/http/api-base-url.interceptor.ts
+++ b/src/app/core/http/api-base-url.interceptor.ts
@@ -3,11 +3,17 @@ import { inject } from '@angular/core';
 
 import { API_BASE_URL } from '../config/api.tokens';
 
+/** Префиксы путей, которые НЕ проксируются через API base URL (статические ассеты). */
+const STATIC_ASSET_PREFIXES = ['/svg/', '/fonts/', '/images/'];
+
 export const apiBaseUrlInterceptor: HttpInterceptorFn = (req, next) => {
   const base = inject(API_BASE_URL);
   if (/^https?:\/\//i.test(req.url)) {
     return next(req);
   }
   const path = req.url.startsWith('/') ? req.url : `/${req.url}`;
+  if (STATIC_ASSET_PREFIXES.some((p) => path.startsWith(p))) {
+    return next(req);
+  }
   return next(req.clone({ url: `${base}${path}` }));
 };
diff --git a/src/app/core/keyboard/keyboard-svg-highlight.service.ts b/src/app/core/keyboard/keyboard-svg-highlight.service.ts
index fc89a15..3b38b06 100644
--- a/src/app/core/keyboard/keyboard-svg-highlight.service.ts
+++ b/src/app/core/keyboard/keyboard-svg-highlight.service.ts
@@ -1,6 +1,7 @@
 import { Injectable, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
 import { DomSanitizer, SafeHtml } from '@angular/platform-browser';
-import { Observable, defer, from, shareReplay } from 'rxjs';
+import { Observable, shareReplay } from 'rxjs';
 import { map } from 'rxjs/operators';
 
 /**
@@ -21,8 +22,8 @@ export interface KeyHighlightDiff {
 }
 
 /**
- * Файлы из `public/svg/visual/*.svg` — URL в приложении `/svg/visual/...`,
- * не через API. HttpClient нельзя: `apiBaseUrlInterceptor` превратил бы путь в `/api/v1/...`.
+ * Файлы из `public/svg/visual/*.svg` — URL в приложении `/svg/visual/...`.
+ * `apiBaseUrlInterceptor` пропускает пути с префиксом `/svg/` (STATIC_ASSET_PREFIXES).
  */
 export const KEYBOARD_SVG_PATH = '/svg/visual/keyboard.svg';
 
@@ -32,22 +33,16 @@ export const ARROW_KEYS_SVG_PATH = '/svg/visual/arrow-keys.svg';
 @Injectable({ providedIn: 'root' })
 export class KeyboardSvgHighlightService {
   private readonly sanitizer = inject(DomSanitizer);
+  private readonly http = inject(HttpClient);
 
   private readonly baseSvgCache = new Map<string, Observable<string>>();
 
   private baseSvg$(path: string): Observable<string> {
     let cached = this.baseSvgCache.get(path);
     if (!cached) {
-      cached = defer(() =>
-        from(
-          fetch(path).then((r) => {
-            if (!r.ok) {
-              throw new Error(`Не удалось загрузить SVG: ${path} (${r.status} ${r.statusText})`);
-            }
-            return r.text();
-          }),
-        ),
-      ).pipe(shareReplay({ bufferSize: 1, refCount: false }));
+      cached = this.http.get(path, { responseType: 'text' }).pipe(
+        shareReplay({ bufferSize: 1, refCount: false }),
+      );
       this.baseSvgCache.set(path, cached);
     }
     return cached;
@@ -56,6 +51,9 @@ export class KeyboardSvgHighlightService {
   /**
    * Interactive timeline mode: animates only the changed keys.
    * Pressed keys pop in, held keys stay static, released keys fade back to idle.
+   *
+   * SECURITY: bypassSecurityTrustHtml используется для SVG, загруженных из собственного public/.
+   * НЕ передавать пользовательский контент через этот метод — XSS-риск.
    */
   svgWithKeyDiff(diff: KeyHighlightDiff, svgPath: string = KEYBOARD_SVG_PATH): Observable<SafeHtml> {
     return this.baseSvg$(svgPath).pipe(
diff --git a/src/app/core/mouse/mouse-payload.util.ts b/src/app/core/mouse/mouse-payload.util.ts
index 281f571..e422164 100644
--- a/src/app/core/mouse/mouse-payload.util.ts
+++ b/src/app/core/mouse/mouse-payload.util.ts
@@ -1,20 +1,9 @@
 import type { ParsedEvent } from '../models/api.types';
 import { unwrapJsonPayload } from '../../shared/utils/json.util';
+import { readNumericField } from '../../shared/utils/number.util';
 
 export type MouseHighlightTarget = 'left' | 'middle' | 'right' | 'wheel';
 
-function readNumber(o: Record<string, unknown>, key: string): number | null {
-  const v = o[key];
-  if (typeof v === 'number' && Number.isFinite(v)) {
-    return v;
-  }
-  if (typeof v === 'string' && v.trim() !== '') {
-    const parsed = Number(v);
-    return Number.isFinite(parsed) ? parsed : null;
-  }
-  return null;
-}
-
 export function isMouseTelemetryEvent(event: ParsedEvent): boolean {
   const t = (event.event_type ?? '').toLowerCase();
   return t.includes('mouse');
@@ -31,7 +20,7 @@ export function isMouseMovePayload(o: Record<string, unknown>): boolean {
   if (action !== 'move') {
     return false;
   }
-  return readNumber(o, 'x') !== null && readNumber(o, 'y') !== null;
+  return readNumericField(o, 'x') !== null && readNumericField(o, 'y') !== null;
 }
 
 /** Событие перемещения курсора (payload или тип события с «move»). */
@@ -45,7 +34,7 @@ export function isMouseMoveTelemetryEvent(event: ParsedEvent): boolean {
     return true;
   }
   const t = (event.event_type ?? '').toLowerCase();
-  if (t.includes('mouse') && t.includes('move') && readNumber(o, 'x') !== null && readNumber(o, 'y') !== null) {
+  if (t.includes('mouse') && t.includes('move') && readNumericField(o, 'x') !== null && readNumericField(o, 'y') !== null) {
     return true;
   }
   return false;
@@ -74,7 +63,7 @@ export function parseMouseHighlightTargets(data: unknown): MouseHighlightTarget[
     return ['middle'];
   }
 
-  const button = readNumber(o, 'button');
+  const button = readNumericField(o, 'button');
   const isDown = o['is_down'];
   if (button == null) {
     return [];
diff --git a/src/app/core/mouse/mouse-svg-highlight.service.ts b/src/app/core/mouse/mouse-svg-highlight.service.ts
index b20784b..0cfa170 100644
--- a/src/app/core/mouse/mouse-svg-highlight.service.ts
+++ b/src/app/core/mouse/mouse-svg-highlight.service.ts
@@ -1,6 +1,7 @@
 import { Injectable, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
 import { DomSanitizer, SafeHtml } from '@angular/platform-browser';
-import { Observable, defer, from, shareReplay } from 'rxjs';
+import { Observable, shareReplay } from 'rxjs';
 import { map } from 'rxjs/operators';
 
 import type { MouseHighlightTarget } from './mouse-payload.util';
@@ -10,17 +11,16 @@ const MOUSE_SVG_PATH = '/svg/visual/mouse.svg';
 @Injectable({ providedIn: 'root' })
 export class MouseSvgHighlightService {
   private readonly sanitizer = inject(DomSanitizer);
+  private readonly http = inject(HttpClient);
 
-  private readonly baseSvg$ = defer(() =>
-    from(
-      fetch(MOUSE_SVG_PATH).then((r) => {
-        if (!r.ok) {
-          throw new Error(`Не удалось загрузить мышь: ${r.status} ${r.statusText}`);
-        }
-        return r.text();
-      }),
-    ),
-  ).pipe(shareReplay({ bufferSize: 1, refCount: false }));
+  private readonly baseSvg$ = this.http.get(MOUSE_SVG_PATH, { responseType: 'text' }).pipe(
+    shareReplay({ bufferSize: 1, refCount: false }),
+  );
+
+  /**
+   * SECURITY: bypassSecurityTrustHtml используется для SVG, загруженных из собственного public/.
+   * НЕ передавать пользовательский контент через этот метод — XSS-риск.
+   */
 
   svgWithHighlight(targets: MouseHighlightTarget[] | null, animated = true): Observable<SafeHtml> {
     return this.baseSvg$.pipe(
diff --git a/src/app/core/sessions/telemetry-event-summary.engine.ts b/src/app/core/sessions/telemetry-event-summary.engine.ts
index 3a4eb00..7c2aee8 100644
--- a/src/app/core/sessions/telemetry-event-summary.engine.ts
+++ b/src/app/core/sessions/telemetry-event-summary.engine.ts
@@ -1,8 +1,8 @@
 import { TELEMETRY_SUMMARY_RULES } from './telemetry-event-summary.config';
-import { fallbackCompactJson, unwrapTelemetryPayload } from './telemetry-event-summary.payload';
+import { fallbackCompactJson, unwrapJsonPayload } from './telemetry-event-summary.payload';
 
 export function summarizeTelemetryData(data: unknown): string {
-  const raw = unwrapTelemetryPayload(data);
+  const raw = unwrapJsonPayload(data);
   if (raw === null || raw === undefined) {
     return '—';
   }
diff --git a/src/app/core/sessions/telemetry-event-summary.payload.ts b/src/app/core/sessions/telemetry-event-summary.payload.ts
index 73f1f76..e3fa8e6 100644
--- a/src/app/core/sessions/telemetry-event-summary.payload.ts
+++ b/src/app/core/sessions/telemetry-event-summary.payload.ts
@@ -1,25 +1,7 @@
-export function unwrapTelemetryPayload(data: unknown): unknown {
-  if (typeof data === 'string') {
-    try {
-      return JSON.parse(data) as unknown;
-    } catch {
-      return data;
-    }
-  }
-  return data;
-}
+import { unwrapJsonPayload } from '../../shared/utils/json.util';
+import { readNumericField } from '../../shared/utils/number.util';
 
-export function readNumericField(o: Record<string, unknown>, key: string): number | null {
-  const v = o[key];
-  if (typeof v === 'number' && Number.isFinite(v)) {
-    return v;
-  }
-  if (typeof v === 'string' && v.trim() !== '') {
-    const n = Number(v);
-    return Number.isFinite(n) ? n : null;
-  }
-  return null;
-}
+export { unwrapJsonPayload, readNumericField };
 
 export function fallbackCompactJson(o: Record<string, unknown>): string {
   try {
@@ -28,3 +10,4 @@ export function fallbackCompactJson(o: Record<string, unknown>): string {
     return '[объект]';
   }
 }
+
diff --git a/src/app/features/devtools/dev-console/dev-console.css b/src/app/features/devtools/dev-console/dev-console.css
index ab13b83..c3002a9 100644
--- a/src/app/features/devtools/dev-console/dev-console.css
+++ b/src/app/features/devtools/dev-console/dev-console.css
@@ -1,4 +1,19 @@
+/*
+ * Dev Console: фиксированная панель для отладки (только isDevMode()).
+ * Цвета определены через CSS-переменные для единства с дизайн-системой.
+ * Компонент намеренно использует тёмную палитру, отличную от основного UI.
+ */
+
 :host {
+  /* Тёмная палитра dev-console */
+  --dc-bg: color-mix(in srgb, var(--sg-color-text) 96%, var(--sg-color-bg));
+  --dc-bg-header: color-mix(in srgb, var(--sg-color-text) 90%, var(--sg-color-bg));
+  --dc-fg: var(--sg-color-form-bg);
+  --dc-fg-muted: color-mix(in srgb, var(--dc-fg) 65%, transparent);
+  --dc-fg-secondary: color-mix(in srgb, var(--dc-fg) 80%, transparent);
+  --dc-border: rgb(255 255 255 / 8%);
+  --dc-border-btn: rgb(255 255 255 / 18%);
+
   position: fixed;
   right: 1rem;
   bottom: 1rem;
@@ -8,8 +23,8 @@
 .dev-console-mini {
   border: 1px solid var(--tui-border-normal);
   border-radius: 999px;
-  background: #1b1d22;
-  color: #e8edf1;
+  background: var(--dc-bg-header);
+  color: var(--dc-fg);
   padding: 0.45rem 0.7rem;
   font-size: 0.78rem;
   line-height: 1;
@@ -22,8 +37,8 @@
   max-height: min(46vh, 380px);
   border: 1px solid var(--tui-border-normal);
   border-radius: 0.75rem;
-  background: #121317;
-  color: #e8edf1;
+  background: var(--dc-bg);
+  color: var(--dc-fg);
   box-shadow: 0 8px 24px rgb(0 0 0 / 28%);
   overflow: hidden;
 }
@@ -37,18 +52,18 @@
   gap: 0.5rem;
   align-items: center;
   padding: 0.4rem 0.55rem;
-  background: #1b1d22;
-  border-bottom: 1px solid rgb(255 255 255 / 8%);
+  background: var(--dc-bg-header);
+  border-bottom: 1px solid var(--dc-border);
   font-size: 0.8rem;
 }
 
 .dev-console__count {
   margin-right: auto;
-  color: #9aa4b2;
+  color: var(--dc-fg-muted);
 }
 
 .dev-console__header button {
-  border: 1px solid rgb(255 255 255 / 18%);
+  border: 1px solid var(--dc-border-btn);
   background: transparent;
   color: inherit;
   border-radius: 0.35rem;
@@ -86,11 +101,11 @@
 }
 
 .dev-console__time {
-  color: #9aa4b2;
+  color: var(--dc-fg-muted);
 }
 
 .dev-console__source {
-  color: #c7cbd1;
+  color: var(--dc-fg-secondary);
   text-transform: uppercase;
 }
 
@@ -100,9 +115,9 @@
 
 .dev-console__expand {
   margin-top: 0.25rem;
-  border: 1px solid rgb(255 255 255 / 18%);
+  border: 1px solid var(--dc-border-btn);
   background: transparent;
-  color: #d6dde7;
+  color: var(--dc-fg-secondary);
   border-radius: 0.3rem;
   font-size: 0.72rem;
   line-height: 1.2;
@@ -131,7 +146,7 @@
 
 .dev-console__details summary {
   cursor: pointer;
-  color: #d4d9e0;
+  color: var(--dc-fg-secondary);
 }
 
 .dev-console__details pre {
diff --git a/src/app/features/devtools/dev-console/dev-console.html b/src/app/features/devtools/dev-console/dev-console.html
index 65a8473..7a986d6 100644
--- a/src/app/features/devtools/dev-console/dev-console.html
+++ b/src/app/features/devtools/dev-console/dev-console.html
@@ -9,10 +9,10 @@
         <strong>Dev Console</strong>
         <span class="dev-console__count">{{ count() }}</span>
         <button type="button" (click)="toggleCollapsed()">
-          {{ collapsed() ? 'Expand' : 'Collapse' }}
+        {{ collapsed() ? 'Развернуть' : 'Свернуть' }}
         </button>
-        <button type="button" (click)="clear()">Clear</button>
-        <button type="button" (click)="minimize()">Minimize</button>
+        <button type="button" (click)="clear()">Очистить</button>
+        <button type="button" (click)="minimize()">Скрыть</button>
       </header>
 
       @if (!collapsed()) {
@@ -51,37 +51,37 @@
                     class="dev-console__expand"
                     (click)="toggleExpanded(entry.id)"
                   >
-                    {{ isExpanded(entry.id) ? 'Hide details' : 'Show details' }}
+                    {{ isExpanded(entry.id) ? 'Скрыть детали' : 'Показать детали' }}
                   </button>
 
                   @if (isExpanded(entry.id)) {
                     <div class="dev-console__details">
                       <div class="dev-console__meta">
-                        <span><b>Method:</b> {{ entry.details.method }}</span>
-                        <span><b>Status:</b> {{ entry.details.statusCode ?? 'pending' }}</span>
-                        <span><b>Duration:</b> {{ entry.details.durationMs ?? '—' }} ms</span>
+                        <span><b>Метод:</b> {{ entry.details.method }}</span>
+                        <span><b>Статус:</b> {{ entry.details.statusCode ?? 'ожидание' }}</span>
+                        <span><b>Длительность:</b> {{ entry.details.durationMs ?? '—' }} мс</span>
                       </div>
                       <div class="dev-console__meta"><b>URL:</b> {{ entry.details.url }}</div>
 
                       <details open>
-                        <summary>Request headers</summary>
+                        <summary>Заголовки запроса</summary>
                         <pre>{{ pretty(entry.details.requestHeaders) }}</pre>
                       </details>
                       <details open>
-                        <summary>Request body</summary>
+                        <summary>Тело запроса</summary>
                         <pre>{{ pretty(entry.details.requestBody) }}</pre>
                       </details>
                       <details open>
-                        <summary>Response headers</summary>
+                        <summary>Заголовки ответа</summary>
                         <pre>{{ pretty(entry.details.responseHeaders) }}</pre>
                       </details>
                       <details open>
-                        <summary>Response body</summary>
+                        <summary>Тело ответа</summary>
                         <pre>{{ pretty(entry.details.responseBody) }}</pre>
                       </details>
                       @if (entry.details.error) {
                         <details open>
-                          <summary>Error</summary>
+                          <summary>Ошибка</summary>
                           <pre>{{ entry.details.error }}</pre>
                         </details>
                       }
diff --git a/src/app/features/landing/landing.component.ts b/src/app/features/landing/landing.component.ts
index 0763114..09fc80f 100644
--- a/src/app/features/landing/landing.component.ts
+++ b/src/app/features/landing/landing.component.ts
@@ -1,12 +1,12 @@
 import { ChangeDetectionStrategy, Component } from '@angular/core';
 import { RouterLink } from '@angular/router';
-import { TuiButton, TuiIcon } from '@taiga-ui/core';
+import { TuiButton } from '@taiga-ui/core';
 import { TuiAccordion } from '@taiga-ui/kit';
 
 @Component({
   selector: 'app-landing',
   standalone: true,
-  imports: [RouterLink, TuiButton, TuiIcon, TuiAccordion],
+  imports: [RouterLink, TuiButton, TuiAccordion],
   templateUrl: './landing.html',
   styleUrl: './landing.css',
   changeDetection: ChangeDetectionStrategy.OnPush,
diff --git a/src/app/features/sessions/session-detail/session-detail.component.ts b/src/app/features/sessions/session-detail/session-detail.component.ts
index 9d26654..fd9c867 100644
--- a/src/app/features/sessions/session-detail/session-detail.component.ts
+++ b/src/app/features/sessions/session-detail/session-detail.component.ts
@@ -3,6 +3,7 @@ import { HttpErrorResponse } from '@angular/common/http';
 import { ChangeDetectionStrategy, Component, inject, isDevMode, model, signal } from '@angular/core';
 import { toObservable } from '@angular/core/rxjs-interop';
 import { ActivatedRoute, RouterLink } from '@angular/router';
+import { clamp } from '../../../shared/utils/math.util';
 import { TuiLink } from '@taiga-ui/core/components/link';
 import { TuiLoader } from '@taiga-ui/core/components/loader';
 import { TuiTitle } from '@taiga-ui/core/components/title';
@@ -111,7 +112,7 @@ export class SessionDetailComponent {
       const now = Date.now();
       const lowerBound = recordingStartMs ?? 0;
       const upperBound = recordingEndMs ?? now;
-      const normalizedTo = this.clamp(toMs ?? upperBound, lowerBound, upperBound);
+      const normalizedTo = clamp(toMs ?? upperBound, lowerBound, upperBound);
       return this.api
         .getParsedEvents(id, lowerBound, normalizedTo)
         .pipe(
@@ -173,11 +174,4 @@ export class SessionDetailComponent {
     const ms = new Date(value).getTime();
     return Number.isFinite(ms) ? ms : null;
   }
-
-  private clamp(value: number, min: number, max: number): number {
-    if (max < min) {
-      return min;
-    }
-    return Math.min(max, Math.max(min, value));
-  }
 }
diff --git a/src/app/features/sessions/session-detail/session-detail.html b/src/app/features/sessions/session-detail/session-detail.html
index 85049f6..995fbd8 100644
--- a/src/app/features/sessions/session-detail/session-detail.html
+++ b/src/app/features/sessions/session-detail/session-detail.html
@@ -36,22 +36,40 @@
               />
             }
             @case (1) {
-              <app-session-interactive-tab
-                [detail]="state.detail"
-                [telemetryEvents]="telemetryState.telemetry"
-                [recordingStartMs]="recordingStartMs()"
-                [recordingEndMs]="recordingEndMs()"
-                [excludeMouseMoves]="excludeMouseMoves()"
-              />
+              @defer {
+                <app-session-interactive-tab
+                  [detail]="state.detail"
+                  [telemetryEvents]="telemetryState.telemetry"
+                  [recordingStartMs]="recordingStartMs()"
+                  [recordingEndMs]="recordingEndMs()"
+                  [excludeMouseMoves]="excludeMouseMoves()"
+                />
+              } @placeholder {
+                <div class="loading-wrap">
+                  <tui-loader [loading]="true" size="l" />
+                </div>
+              }
             }
             @case (2) {
-              <app-session-fingerprint-tab [sessionId]="state.id" />
+              @defer {
+                <app-session-fingerprint-tab [sessionId]="state.id" />
+              } @placeholder {
+                <div class="loading-wrap">
+                  <tui-loader [loading]="true" size="l" />
+                </div>
+              }
             }
             @case (3) {
-              <app-session-info-tab
-                [detail]="state.detail"
-                [telemetryState]="telemetryState"
-              />
+              @defer {
+                <app-session-info-tab
+                  [detail]="state.detail"
+                  [telemetryState]="telemetryState"
+                />
+              } @placeholder {
+                <div class="loading-wrap">
+                  <tui-loader [loading]="true" size="l" />
+                </div>
+              }
             }
           }
         }
diff --git a/src/app/features/sessions/session-detail/session-fingerprint-tab/session-fingerprint-tab.component.ts b/src/app/features/sessions/session-detail/session-fingerprint-tab/session-fingerprint-tab.component.ts
index 41c40aa..dc9f436 100644
--- a/src/app/features/sessions/session-detail/session-fingerprint-tab/session-fingerprint-tab.component.ts
+++ b/src/app/features/sessions/session-detail/session-fingerprint-tab/session-fingerprint-tab.component.ts
@@ -1,23 +1,21 @@
-import { DatePipe } from '@angular/common';
-import { AsyncPipe, JsonPipe } from '@angular/common';
+import { AsyncPipe, DatePipe } from '@angular/common';
 import { HttpErrorResponse } from '@angular/common/http';
 import { ChangeDetectionStrategy, Component, input, inject } from '@angular/core';
 import { toObservable } from '@angular/core/rxjs-interop';
 import { TuiLoader } from '@taiga-ui/core/components/loader';
-import { TuiScrollbar } from '@taiga-ui/core/components/scrollbar';
 import { TuiIcon } from '@taiga-ui/core/components/icon';
 import { catchError, combineLatest, map, of, startWith, switchMap } from 'rxjs';
 
 import { SessionsApiService } from '../../../../core/services/sessions-api.service';
 import { UserErrorNotifyService } from '../../../../core/notifications/user-error-notify.service';
-import type { FingerprintHeartbeat } from '../../../../core/models/api.types';
+import type { FingerprintHeartbeat, FingerprintHeartbeatPayload } from '../../../../core/models/api.types';
 
 export interface Anomaly {
   timestamp_ms: number;
   field: string;
   fieldLabel: string;
-  oldValue: string | boolean;
-  newValue: string | boolean;
+  oldValue: unknown;
+  newValue: unknown;
 }
 
 @Component({
@@ -64,29 +62,31 @@ export class SessionFingerprintTabComponent {
     })
   );
 
+  private static readonly ANOMALY_FIELDS: ReadonlyArray<{
+    key: keyof FingerprintHeartbeatPayload;
+    label: string;
+  }> = [
+    { key: 'screen_layout', label: 'Конфигурация экранов' },
+    { key: 'username', label: 'Пользователь системы' },
+    { key: 'hostname', label: 'Имя компьютера' },
+    { key: 'active_iface', label: 'Сетевой адаптер' },
+    { key: 'hypervisor_present', label: 'Виртуализация / Hypervisor' },
+  ];
+
   private detectAnomalies(heartbeats: FingerprintHeartbeat[]): Anomaly[] {
     if (!heartbeats || heartbeats.length < 2) {
       return [];
     }
 
     const anomalies: Anomaly[] = [];
-    const fieldsToCheck = [
-      { key: 'screen_layout', label: 'Конфигурация экранов' },
-      { key: 'username', label: 'Пользователь системы' },
-      { key: 'hostname', label: 'Имя компьютера' },
-      { key: 'active_iface', label: 'Сетевой адаптер' },
-      { key: 'hypervisor_present', label: 'Виртуализация / Hypervisor' },
-    ] as const;
 
     for (let i = 1; i < heartbeats.length; i++) {
       const prev = heartbeats[i - 1].payload;
       const curr = heartbeats[i].payload;
       const timestamp = heartbeats[i].timestamp_ms;
 
-      for (const field of fieldsToCheck) {
-        // @ts-ignore (dynamic key access)
+      for (const field of SessionFingerprintTabComponent.ANOMALY_FIELDS) {
         const oldValue = prev[field.key];
-        // @ts-ignore
         const newValue = curr[field.key];
 
         if (oldValue !== newValue) {
diff --git a/src/app/features/sessions/session-detail/session-fingerprint-tab/session-fingerprint-tab.css b/src/app/features/sessions/session-detail/session-fingerprint-tab/session-fingerprint-tab.css
index 9240547..ec99da4 100644
--- a/src/app/features/sessions/session-detail/session-fingerprint-tab/session-fingerprint-tab.css
+++ b/src/app/features/sessions/session-detail/session-fingerprint-tab/session-fingerprint-tab.css
@@ -5,12 +5,7 @@
   padding-top: 1rem;
 }
 
-.section-title {
-  font-size: 1.25rem;
-  font-weight: 600;
-  margin-top: 0;
-  margin-bottom: 1rem;
-}
+/* Наследует глобальный .section-title из page-common.css; дополнительных переопределений не требуется */
 
 .loading-wrap {
   display: flex;
diff --git a/src/app/features/sessions/session-detail/session-interactive-tab/session-interactive-tab.component.ts b/src/app/features/sessions/session-detail/session-interactive-tab/session-interactive-tab.component.ts
index 56ebd56..a90edda 100644
--- a/src/app/features/sessions/session-detail/session-interactive-tab/session-interactive-tab.component.ts
+++ b/src/app/features/sessions/session-detail/session-interactive-tab/session-interactive-tab.component.ts
@@ -18,6 +18,8 @@ import type { MouseHighlightTarget } from '../../../../core/mouse/mouse-payload.
 import { SessionsApiService } from '../../../../core/services/sessions-api.service';
 import type { ParsedEvent, SessionDetailResponse } from '../../../../core/models/api.types';
 import { formatClockTime, formatUnixMs } from '../../../../shared/utils/date-time.util';
+import { clamp } from '../../../../shared/utils/math.util';
+import { resolveActiveStreamType, resolvePlaylistUrlForType } from '../../../../shared/utils/stream.util';
 import { HlsPlayerComponent } from '../../hls-player/hls-player.component';
 import { StreamSelectorComponent } from '../../stream-selector/stream-selector.component';
 import { KeyboardViewComponent } from '../../keyboard-view/keyboard-view.component';
@@ -277,24 +279,11 @@ export class SessionInteractiveTabComponent {
   });
 
   protected activeStreamType(): string | null {
-    const streams = this.detail().streams;
-    if (!streams?.length) {
-      return null;
-    }
-    const picked = this.selectedStreamType();
-    if (picked && streams.some((s) => s.stream_type === picked)) {
-      return picked;
-    }
-    return streams[0].stream_type;
+    return resolveActiveStreamType(this.detail().streams, this.selectedStreamType());
   }
 
   protected playlistUrl(): string | null {
-    const t = this.activeStreamType();
-    if (!t) {
-      return null;
-    }
-    const stream = this.detail().streams.find((s) => s.stream_type === t);
-    return stream ? this.api.resolvePlaylistUrl(stream.playlist_url) : null;
+    return resolvePlaylistUrlForType(this.detail().streams, this.activeStreamType(), this.api);
   }
 
   protected pickStream(type: string): void {
@@ -306,14 +295,14 @@ export class SessionInteractiveTabComponent {
     if (!Number.isFinite(parsed)) {
       return;
     }
-    this.timelineSec.set(this.clamp(parsed, 0, this.timelineMaxSec()));
+    this.timelineSec.set(clamp(parsed, 0, this.timelineMaxSec()));
   }
 
   protected onPlayerCurrentTimeChange(seconds: number): void {
     if (!Number.isFinite(seconds)) {
       return;
     }
-    this.timelineSec.set(this.clamp(seconds, 0, this.timelineMaxSec()));
+    this.timelineSec.set(clamp(seconds, 0, this.timelineMaxSec()));
   }
 
   protected onPlayerDurationChange(seconds: number): void {
@@ -321,11 +310,11 @@ export class SessionInteractiveTabComponent {
       return;
     }
     this.durationSec.set(seconds);
-    this.timelineSec.update((current) => this.clamp(current, 0, this.timelineMaxSec()));
+    this.timelineSec.update((current) => clamp(current, 0, this.timelineMaxSec()));
   }
 
   protected shiftTimeline(deltaSec: number): void {
-    this.timelineSec.update((current) => this.clamp(current + deltaSec, 0, this.timelineMaxSec()));
+    this.timelineSec.update((current) => clamp(current + deltaSec, 0, this.timelineMaxSec()));
   }
 
   protected togglePlayback(): void {
@@ -364,11 +353,4 @@ export class SessionInteractiveTabComponent {
   protected cursorLabel(): string {
     return formatUnixMs(this.cursorMs());
   }
-
-  private clamp(value: number, min: number, max: number): number {
-    if (max < min) {
-      return min;
-    }
-    return Math.min(max, Math.max(min, value));
-  }
 }
diff --git a/src/app/features/sessions/session-detail/session-view-tab/session-view-tab.component.ts b/src/app/features/sessions/session-detail/session-view-tab/session-view-tab.component.ts
index dddcc28..41891c4 100644
--- a/src/app/features/sessions/session-detail/session-view-tab/session-view-tab.component.ts
+++ b/src/app/features/sessions/session-detail/session-view-tab/session-view-tab.component.ts
@@ -15,6 +15,8 @@ import { summarizeTelemetryData } from '../../../../core/sessions/telemetry-even
 import { SessionsApiService } from '../../../../core/services/sessions-api.service';
 import type { ParsedEvent, SessionDetailResponse } from '../../../../core/models/api.types';
 import { formatTimestamp, formatUnixMs as formatUnixMsUtil } from '../../../../shared/utils/date-time.util';
+import { clamp } from '../../../../shared/utils/math.util';
+import { resolveActiveStreamType, resolvePlaylistUrlForType } from '../../../../shared/utils/stream.util';
 import { HlsPlayerComponent } from '../../hls-player/hls-player.component';
 import { StreamSelectorComponent } from '../../stream-selector/stream-selector.component';
 import { TelemetryEventDetailComponent } from '../../telemetry-event-detail/telemetry-event-detail.component';
@@ -74,24 +76,11 @@ export class SessionViewTabComponent {
   private readonly telemetryRangeSelection = signal<TelemetryRangeSelection>({ type: 'end' });
 
   protected activeStreamType(): string | null {
-    const streams = this.detail().streams;
-    if (!streams?.length) {
-      return null;
-    }
-    const picked = this.selectedStreamType();
-    if (picked && streams.some((s) => s.stream_type === picked)) {
-      return picked;
-    }
-    return streams[0].stream_type;
+    return resolveActiveStreamType(this.detail().streams, this.selectedStreamType());
   }
 
   protected playlistUrl(): string | null {
-    const t = this.activeStreamType();
-    if (!t) {
-      return null;
-    }
-    const stream = this.detail().streams.find((s) => s.stream_type === t);
-    return stream ? this.api.resolvePlaylistUrl(stream.playlist_url) : null;
+    return resolvePlaylistUrlForType(this.detail().streams, this.activeStreamType(), this.api);
   }
 
   protected pickStream(type: string): void {
@@ -161,7 +150,7 @@ export class SessionViewTabComponent {
     this.telemetryRangeSelection.set({ type: 'preset', seconds });
     const start = this.recordingStartMs() ?? Date.now();
     const end = this.recordingEndMs() ?? Date.now();
-    this.telemetryToMsChange.emit(this.clamp(start + seconds * 1000, start, end));
+    this.telemetryToMsChange.emit(clamp(start + seconds * 1000, start, end));
   }
 
   protected loadUntilEndTelemetry(): void {
@@ -180,7 +169,7 @@ export class SessionViewTabComponent {
       this.telemetryRangeSelection.set({ type: 'custom' });
       const start = this.recordingStartMs() ?? Date.now();
       const end = this.recordingEndMs() ?? Date.now();
-      this.telemetryToMsChange.emit(this.clamp(ms, start, end));
+      this.telemetryToMsChange.emit(clamp(ms, start, end));
     }
   }
 
@@ -204,11 +193,4 @@ export class SessionViewTabComponent {
   protected formatUnixMs(value: number | null | undefined): string {
     return formatUnixMsUtil(value);
   }
-
-  private clamp(value: number, min: number, max: number): number {
-    if (max < min) {
-      return min;
-    }
-    return Math.min(max, Math.max(min, value));
-  }
 }
diff --git a/src/app/features/sessions/session-detail/session-view-tab/session-view-tab.html b/src/app/features/sessions/session-detail/session-view-tab/session-view-tab.html
index 8a35041..23b9c88 100644
--- a/src/app/features/sessions/session-detail/session-view-tab/session-view-tab.html
+++ b/src/app/features/sessions/session-detail/session-view-tab/session-view-tab.html
@@ -179,7 +179,7 @@
               <tbody>
                 @for (
                   row of filteredTelemetryEvents(visibleTelemetryEvents());
-                  track $index;
+                  track row.timestamp + '_' + row.event_type + '_' + $index;
                   let i = $index
                 ) {
                   <tr
diff --git a/src/app/features/sessions/telemetry-event-detail/telemetry-event-detail.css b/src/app/features/sessions/telemetry-event-detail/telemetry-event-detail.css
index 15077a2..dd30775 100644
--- a/src/app/features/sessions/telemetry-event-detail/telemetry-event-detail.css
+++ b/src/app/features/sessions/telemetry-event-detail/telemetry-event-detail.css
@@ -67,10 +67,7 @@
   color: var(--tui-text-secondary);
 }
 
-.mono {
-  font-family: ui-monospace, monospace;
-  font-size: 0.92em;
-}
+/* .mono определён глобально в page-common.css */
 
 .keyboard-block {
   margin: 0 0 1rem;
@@ -105,11 +102,4 @@
   padding: 1rem;
 }
 
-.muted {
-  color: var(--tui-text-tertiary);
-}
-
-.small {
-  font: var(--tui-font-text-s);
-  margin: 0.5rem 0 0;
-}
+/* .muted и .small определены глобально в page-common.css */
diff --git a/src/app/shared/utils/date-time.util.ts b/src/app/shared/utils/date-time.util.ts
index b4ff4b7..5c2c0a6 100644
--- a/src/app/shared/utils/date-time.util.ts
+++ b/src/app/shared/utils/date-time.util.ts
@@ -19,7 +19,7 @@ export function formatTimestamp(value: string | null | undefined): string {
 }
 
 export function formatUnixMs(value: number | null | undefined): string {
-  if (!value) {
+  if (value == null) {
     return '—';
   }
   return formatTimestamp(new Date(value).toISOString());
diff --git a/src/app/shared/utils/math.util.ts b/src/app/shared/utils/math.util.ts
new file mode 100644
index 0000000..d06a466
--- /dev/null
+++ b/src/app/shared/utils/math.util.ts
@@ -0,0 +1,10 @@
+/**
+ * Ограничивает значение в диапазон [min, max].
+ * Если max < min — возвращает min (защита от инверсии границ).
+ */
+export function clamp(value: number, min: number, max: number): number {
+  if (max < min) {
+    return min;
+  }
+  return Math.min(max, Math.max(min, value));
+}
diff --git a/src/app/shared/utils/number.util.ts b/src/app/shared/utils/number.util.ts
new file mode 100644
index 0000000..4341e2d
--- /dev/null
+++ b/src/app/shared/utils/number.util.ts
@@ -0,0 +1,15 @@
+/**
+ * Безопасно извлекает числовое значение по ключу из объекта.
+ * Поддерживает как `number`, так и строки-числа.
+ */
+export function readNumericField(o: Record<string, unknown>, key: string): number | null {
+  const v = o[key];
+  if (typeof v === 'number' && Number.isFinite(v)) {
+    return v;
+  }
+  if (typeof v === 'string' && v.trim() !== '') {
+    const parsed = Number(v);
+    return Number.isFinite(parsed) ? parsed : null;
+  }
+  return null;
+}
diff --git a/src/app/shared/utils/stream.util.ts b/src/app/shared/utils/stream.util.ts
new file mode 100644
index 0000000..8f381d4
--- /dev/null
+++ b/src/app/shared/utils/stream.util.ts
@@ -0,0 +1,34 @@
+import type { StreamInfo } from '../../core/models/api.types';
+import { SessionsApiService } from '../../core/services/sessions-api.service';
+
+/**
+ * Определяет активный тип потока из списка с учётом пользовательского выбора.
+ * Если выбранного потока нет в списке, возвращает первый доступный.
+ */
+export function resolveActiveStreamType(
+  streams: StreamInfo[],
+  selectedType: string | null,
+): string | null {
+  if (!streams?.length) {
+    return null;
+  }
+  if (selectedType && streams.some((s) => s.stream_type === selectedType)) {
+    return selectedType;
+  }
+  return streams[0].stream_type;
+}
+
+/**
+ * Возвращает полный URL плейлиста для активного типа потока.
+ */
+export function resolvePlaylistUrlForType(
+  streams: StreamInfo[],
+  activeType: string | null,
+  api: SessionsApiService,
+): string | null {
+  if (!activeType) {
+    return null;
+  }
+  const stream = streams.find((s) => s.stream_type === activeType);
+  return stream ? api.resolvePlaylistUrl(stream.playlist_url) : null;
+}
diff --git a/src/environments/environment.prod.ts b/src/environments/environment.prod.ts
index 83725a4..b8fed91 100644
--- a/src/environments/environment.prod.ts
+++ b/src/environments/environment.prod.ts
@@ -3,4 +3,5 @@ export const environment = {
   apiFallbackOrigin: 'https://sparkguardian.ru',
   apiBasePath: '/api/v1',
   interactivePrerollMs: 4000,
+  defaultPageLimit: 10,
 } as const;