diff --git a/.github/workflows/test-app.yml b/.github/workflows/test-app.yml
index 9b338851..0a9e073f 100644
--- a/.github/workflows/test-app.yml
+++ b/.github/workflows/test-app.yml
@@ -4,39 +4,60 @@ on:
     pull_request:
 
 jobs:
-    build:
-        name: Build Image Without Push
+    lint:
+        name: Lint
         runs-on: ubuntu-latest
         steps:
             - name: Checkout
               uses: actions/checkout@v4
 
-            - name: Set up QEMU
-              uses: docker/setup-qemu-action@v3
-
-            - name: Set up Docker Buildx
-              id: buildx
-              uses: docker/setup-buildx-action@v3
-
-            - name: Cache Docker layers
-              uses: actions/cache@v4
+            - name: Setup Node.js
+              uses: actions/setup-node@v4
               with:
-                  path: /tmp/.buildx-cache
-                  key: ${{ runner.os }}-buildx-${{ github.sha }}
-                  restore-keys: |
-                      ${{ runner.os }}-buildx-
+                  node-version: 22
+                  cache: npm
 
-            - name: Build image (no push)
-              uses: docker/build-push-action@v5
+            - name: Install dependencies
+              run: npm ci
+
+            - name: Lint
+              run: npm run lint
+
+    test:
+        name: Test
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+
+            - name: Setup Node.js
+              uses: actions/setup-node@v4
               with:
-                  context: ./
-                  push: false # Do NOT push
-                  platforms: linux/amd64
-                  cache-from: type=local,src=/tmp/.buildx-cache
-                  cache-to: type=local,dest=/tmp/.buildx-cache-new
+                  node-version: 22
+                  cache: npm
 
-            - name: Move cache
-              if: steps.buildx.outcome == 'success'
-              run: |
-                  rm -rf /tmp/.buildx-cache
-                  mv /tmp/.buildx-cache-new /tmp/.buildx-cache
+            - name: Install dependencies
+              run: npm ci
+
+            - name: Test
+              run: npm test
+
+    build:
+        name: Build
+        needs: [lint, test]
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+
+            - name: Setup Node.js
+              uses: actions/setup-node@v4
+              with:
+                  node-version: 22
+                  cache: npm
+
+            - name: Install dependencies
+              run: npm ci
+
+            - name: Build
+              run: npm run build
diff --git a/CLAUDE.md b/CLAUDE.md
index 00e42077..1d5cffb3 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -20,13 +20,13 @@ Node 22 required (see `mise.toml`). Deployed on Vercel.
 
 ## Git Workflow
 
-Feature branches are named `issue-XXX` where `XXX` is the related GitHub issue number.
+Feature branches are named `issue-XXX` where `XXX` is the related GitHub issue number. PR descriptions should not include a test plan section.
 
 ## CI/CD
 
 - `Dockerfile` — multi-stage Alpine build with standalone Next.js output, pushed to GHCR
 - `.github/workflows/build-app.yaml` — builds and pushes Docker image on push to master
-- `.github/workflows/test-app.yml` — builds Docker image (no push) on PRs
+- `.github/workflows/test-app.yml` — runs lint, tests, and build on PRs (build runs only after lint and tests pass)
 
 ## Code Style
 
@@ -75,7 +75,14 @@ CSS Modules (`.module.css`) for component-scoped styles. Global theme via CSS cu
 
 ## TypeScript
 
-Path alias: `@/*` → `src/*`. Strict mode enabled. Target ES6. `moduleDetection: "force"` in tsconfig (required because Next.js auto-generates `.next/types/validator.ts` without exports, which breaks `isolatedModules`). Both `@/` and `src/` import styles are used in the codebase — prefer `@/` for new code.
+Path alias: `@/*` → `src/*`. Strict mode enabled. Target ES6. `moduleDetection: "force"` in tsconfig (required because Next.js auto-generates `.next/types/validator.ts` without exports, which breaks `verbatimModuleSyntax`). Use `@/` path alias for all local imports, not `src/`. Legacy `src/` imports exist in the codebase but should not be used in new or modified code.
+
+`verbatimModuleSyntax` is enabled — use `import type` for type-only imports. When importing both values and types from the same module, use separate `import` and `import type` statements:
+
+```ts
+import { createPage } from "@/remote/factory"
+import type { Page } from "@/types"
+```
 
 ## Accessibility
 
diff --git a/pages/404.tsx b/pages/404.tsx
index 13382355..c8af0613 100644
--- a/pages/404.tsx
+++ b/pages/404.tsx
@@ -1,4 +1,4 @@
-import { NextPage } from "next"
+import type { NextPage } from "next"
 import { Wrapper } from "@/components/Wrapper"
 import { NotFound } from "@/components/NotFound"
 import Copyright from "@/components/Copyright"
diff --git a/pages/[...slug].tsx b/pages/[...slug].tsx
index 4331c2ca..1a5d94ea 100644
--- a/pages/[...slug].tsx
+++ b/pages/[...slug].tsx
@@ -1,11 +1,11 @@
 import Head from "next/head"
-import { App } from "src/components/App"
-import { Page } from "src/components/Page"
+import { App } from "@/components/App"
+import { Page } from "@/components/Page"
 import { NextSeo } from "next-seo"
-import { MetaBuilder } from "src/lib/meta"
-import { GetStaticProps, NextPage } from "next"
-import { IBreadcumbsPart, IMenu, IMeta, ITag, Sign, Token } from "@/types"
-import { Html } from "src/components/Html"
+import { MetaBuilder } from "@/lib/meta"
+import type { GetStaticProps, NextPage } from "next"
+import type { BreadcrumbPart, MenuItem, Meta, Tag, Sign, Token } from "@/types"
+import { Html } from "@/components/Html"
 import { Youtube } from "@/components/Youtube"
 import { paramsToSlug } from "@/remote/lib"
 import { PageGrid } from "@/components/PageGrid"
@@ -17,11 +17,11 @@ import { getMenu, getPageBySlug, getUrls } from "@/remote/api"
 
 type Props = {
     title: string
-    tags: ITag[]
+    tags: Tag[]
     date: string
-    breadcrumb: IBreadcumbsPart[]
-    meta?: IMeta
-    menu: IMenu[],
+    breadcrumb: BreadcrumbPart[]
+    meta?: Meta
+    menu: MenuItem[],
     tokens: Token[]
     documentSignature: Sign
 }
diff --git a/pages/index.tsx b/pages/index.tsx
index fdeccd0f..539727e3 100644
--- a/pages/index.tsx
+++ b/pages/index.tsx
@@ -1,18 +1,18 @@
 import Head from "next/head"
-import { App } from "src/components/App"
+import { App } from "@/components/App"
 import { NextSeo } from "next-seo"
-import { PageGrid } from "src/components/PageGrid"
-import { HudozkaTitle } from "src/components/HudozkaTitle"
-import { MetaBuilder } from "src/lib/meta"
-import { GetStaticProps, NextPage } from "next"
-import { IMenu, IMeta, PageCardDto } from "src/types"
+import { PageGrid } from "@/components/PageGrid"
+import { HudozkaTitle } from "@/components/HudozkaTitle"
+import { MetaBuilder } from "@/lib/meta"
+import type { GetStaticProps, NextPage } from "next"
+import type { MenuItem, Meta, PageCardDto } from "@/types"
 import { useMobile } from "@/hooks/useMobile"
 import { getHomeCards, getMenu } from "@/remote/api"
 
 type Props = {
     title: string
-    meta: IMeta
-    menu: IMenu[]
+    meta: Meta
+    menu: MenuItem[]
     items: PageCardDto[]
 }
 
diff --git a/src/components/App/index.tsx b/src/components/App/index.tsx
index 364c3d8a..98f6c121 100644
--- a/src/components/App/index.tsx
+++ b/src/components/App/index.tsx
@@ -3,9 +3,9 @@ import { MenuContext } from "@/context/MenuContext"
 import { Footer } from "../Footer"
 import { Content } from "../Content"
 import { Breadcrumbs } from "../Breadcrumbs"
-import { IBreadcumbsPart, IMenu } from "src/types"
+import type { BreadcrumbPart, MenuItem } from "@/types"
 import { useRouter } from "next/router"
-import { useMobile } from "src/hooks/useMobile"
+import { useMobile } from "@/hooks/useMobile"
 import { Navigation } from "@/components/Navigation"
 import { Box } from "@/ui/Box"
 import { AccessibilityButton } from "../AccessibilityButton"
@@ -29,8 +29,8 @@ const Gosuslugi = dynamic(import("../Gosuslugi").then(module => module.Gosuslugi
 export type AppProps = {
     showAuthor?: boolean
     contentStyle?: React.CSSProperties
-    breadcrumbs?: IBreadcumbsPart[]
-    menu: IMenu[]
+    breadcrumbs?: BreadcrumbPart[]
+    menu: MenuItem[]
     children?: React.ReactNode
 }
 
diff --git a/src/components/Breadcrumbs/index.tsx b/src/components/Breadcrumbs/index.tsx
index 7e3e0b3f..20b1708c 100644
--- a/src/components/Breadcrumbs/index.tsx
+++ b/src/components/Breadcrumbs/index.tsx
@@ -1,12 +1,12 @@
 import s from "./styles.module.css"
 
-import { IBreadcumbsPart } from "src/types"
+import type { BreadcrumbPart } from "@/types"
 import { Button } from "@/ui/Button"
-import { insertBetween } from "src/lib/array"
+import { insertBetween } from "@/lib/array"
 
 export type BreadcrumbsProps = {
     style?: React.CSSProperties
-    items: IBreadcumbsPart[]
+    items: BreadcrumbPart[]
     path: string
 }
 
diff --git a/src/components/File/index.tsx b/src/components/File/index.tsx
index 6e921276..58ed5f02 100644
--- a/src/components/File/index.tsx
+++ b/src/components/File/index.tsx
@@ -1,6 +1,6 @@
 import s from "./styles.module.css"
 
-import { FileDefinition } from "src/types"
+import type { FileDefinition } from "@/types"
 import { ext, size } from "src/lib/file"
 import Link from "next/link"
 import Image from "next/image"
diff --git a/src/components/FileCard/Signature.tsx b/src/components/FileCard/Signature.tsx
index 4d6a5096..626697a7 100644
--- a/src/components/FileCard/Signature.tsx
+++ b/src/components/FileCard/Signature.tsx
@@ -1,6 +1,6 @@
 import s from "./signature.module.css"
 
-import { Sign } from "@/types"
+import type { Sign } from "@/types"
 import { HiOutlineShieldCheck } from "react-icons/hi"
 
 import * as Tooltip from "@radix-ui/react-tooltip"
diff --git a/src/components/FileCard/index.tsx b/src/components/FileCard/index.tsx
index b8d8ce16..35a1e566 100644
--- a/src/components/FileCard/index.tsx
+++ b/src/components/FileCard/index.tsx
@@ -2,7 +2,7 @@ import s from "./filecard.module.css"
 
 import Image from "next/image"
 import dynamic from "next/dynamic"
-import { FileTokenData, Sign } from "@/types"
+import type { FileTokenData, Sign } from "@/types"
 import { size, ext } from "@/lib/file"
 import { getResizedUrl } from "@/lib/image"
 import Link from "next/link"
diff --git a/src/components/Menu/index.tsx b/src/components/Menu/index.tsx
index f3a2827a..5ab8017a 100644
--- a/src/components/Menu/index.tsx
+++ b/src/components/Menu/index.tsx
@@ -1,6 +1,6 @@
 import s from "./styles.module.css"
 
-import { IMenu } from "@/types"
+import type { MenuItem } from "@/types"
 import * as NavigationMenu from "@radix-ui/react-navigation-menu"
 import classnames from "classnames/bind"
 import { useRouter } from "next/router"
@@ -10,8 +10,8 @@ let cx = classnames.bind(s)
 
 export type MenuProps = {
     vertical?: boolean
-    items: IMenu[]
-    onItemClick?: (item: IMenu) => void
+    items: MenuItem[]
+    onItemClick?: (item: MenuItem) => void
 }
 
 export const Menu: React.FC<MenuProps> = ({ vertical = false, onItemClick, items }) => {
diff --git a/src/components/Page/index.tsx b/src/components/Page/index.tsx
index 38257e6d..f9b12daf 100644
--- a/src/components/Page/index.tsx
+++ b/src/components/Page/index.tsx
@@ -1,13 +1,13 @@
 import s from "./styles.module.css"
 
 import { PageMeta } from "../PageMeta"
-import { ITag } from "src/types"
+import type { Tag } from "@/types"
 
 export type PageProps = {
     children?: React.ReactNode
     style?: React.CSSProperties
     date?: Date
-    tags: ITag[]
+    tags: Tag[]
 }
 
 export const Page: React.FC<PageProps> = props => (
diff --git a/src/components/PageGrid/index.tsx b/src/components/PageGrid/index.tsx
index da97c313..dacb6a68 100644
--- a/src/components/PageGrid/index.tsx
+++ b/src/components/PageGrid/index.tsx
@@ -1,7 +1,8 @@
 import Image from "next/image"
-import { PageCardDto } from "@/types"
+import type { PageCardDto } from "@/types"
 import { CardGrid } from "../CardGrid"
-import { Card, CardLayout } from "../Card"
+import { Card } from "../Card"
+import type { CardLayout } from "../Card"
 import { Date } from "./Date"
 import { Spacer } from "../Spacer"
 import { Box } from "@/ui/Box"
diff --git a/src/components/PageMeta/index.tsx b/src/components/PageMeta/index.tsx
index a09bd89f..fc2a0274 100644
--- a/src/components/PageMeta/index.tsx
+++ b/src/components/PageMeta/index.tsx
@@ -1,15 +1,16 @@
 import s from "./styles.module.css"
 
 import cx from "classnames"
-import { dateFormat } from "src/lib/date"
-import { ITag } from "src/types"
-import { TagList, Direction } from "../TagList"
-import { useMobile } from "src/hooks/useMobile"
+import { dateFormat } from "@/lib/date"
+import type { Tag } from "@/types"
+import { TagList } from "../TagList"
+import type { Direction } from "../TagList"
+import { useMobile } from "@/hooks/useMobile"
 
 export type PageMetaProps = {
     style?: React.CSSProperties
     date?: Date
-    tags?: ITag[]
+    tags?: Tag[]
 }
 
 export const PageMeta: React.FC<PageMetaProps> = props => {
diff --git a/src/components/TagList/index.tsx b/src/components/TagList/index.tsx
index 20c14833..1be90aae 100644
--- a/src/components/TagList/index.tsx
+++ b/src/components/TagList/index.tsx
@@ -1,7 +1,7 @@
 import s from "./styles.module.css"
 
 import cx from "classnames"
-import { ITag } from "src/types"
+import type { Tag } from "@/types"
 import { Button } from "@/ui/Button"
 
 const directionClass = {
@@ -11,13 +11,13 @@ const directionClass = {
 
 export type Direction = "horizontal" | "vertical"
 
-export type TagProps = {
+export type TagItemProps = {
     children?: React.ReactNode
     href: string
     direction: Direction
 }
 
-export const Tag: React.FC<TagProps> = props => (
+export const TagItem: React.FC<TagItemProps> = props => (
     <li>
         <Button
             href={props.href}
@@ -30,20 +30,20 @@ export const Tag: React.FC<TagProps> = props => (
 )
 
 export type TagListProps = {
-    items: ITag[]
+    items: Tag[]
     direction: Direction
 }
 
 export const TagList: React.FC<TagListProps> = props => (
     <ul className={cx(s.tags, directionClass[props.direction])}>
         {props.items.map(x => (
-            <Tag
+            <TagItem
                 key={x.slug}
                 href={x.href}
                 direction={props.direction}
             >
                 {x.name}
-            </Tag>
+            </TagItem>
         ))}
     </ul>
 )
diff --git a/src/lib/meta.ts b/src/lib/meta.ts
index ba128adf..516f2ed5 100644
--- a/src/lib/meta.ts
+++ b/src/lib/meta.ts
@@ -1,6 +1,6 @@
-import { IMeta, Pic } from "src/types"
+import type { Meta, Pic } from "@/types"
 
-export function meta(props: Partial<IMeta>): IMeta {
+export function meta(props: Partial<Meta>): Meta {
     const path = props.url || "/"
     const url = `https://art.shlisselburg.org${path}`
 
@@ -28,9 +28,9 @@ export class MetaBuilder {
     private image?: Pic
     private title?: string
     private description?: string
-    private data?: Partial<IMeta>
+    private data?: Partial<Meta>
 
-    setData(param: Partial<IMeta>) {
+    setData(param: Partial<Meta>) {
         this.data = param
         return this
     }
diff --git a/src/remote/api.ts b/src/remote/api.ts
index 06af0c80..a04603e2 100644
--- a/src/remote/api.ts
+++ b/src/remote/api.ts
@@ -1,5 +1,5 @@
 import { createHomeCards, createMenu, createPage, createPageUrls } from "@/remote/factory"
-import { IMenu, IPage, PageCardDto } from "@/types"
+import type { MenuItem, Page, PageCardDto } from "@/types"
 
 const backendUrl = "https://hudozka.tmshv.com"
 
@@ -43,7 +43,7 @@ export async function getUrls(): Promise<string[]> {
     return urls
 }
 
-export async function getPageBySlug(slug: string): Promise<IPage | null> {
+export async function getPageBySlug(slug: string): Promise<Page | null> {
     const url = `${backendUrl}/pages?slug=${slug}`
     const page = await apiGet(createPage)(url, () => null)
     if (!page) {
@@ -57,7 +57,7 @@ export async function getHomeCards(): Promise<PageCardDto[]> {
     return items
 }
 
-export async function getMenu(): Promise<IMenu[]> {
+export async function getMenu(): Promise<MenuItem[]> {
     const menu = await apiGet(createMenu)(`${backendUrl}/menu`, () => [])
     return menu
 }
diff --git a/src/remote/factory.ts b/src/remote/factory.ts
index d131c834..18f5b769 100644
--- a/src/remote/factory.ts
+++ b/src/remote/factory.ts
@@ -1,7 +1,7 @@
-import { IMenu, IPage, ITag, PageCardDto, Pic, Token } from "@/types"
+import type { MenuItem, Page, Tag, PageCardDto, Pic, Token } from "@/types"
 import { asItem } from "./lib"
-import { StrapiComponentEmbed, StrapiComponent, StrapiHome, StrapiPage, StrapiPageCard, StrapiTag, StrapiMedia, StrapiMenu } from "./types"
-import { typograf, markdownToHtml } from "src/lib/text"
+import type { StrapiComponentEmbed, StrapiComponent, StrapiHome, StrapiPage, StrapiPageCard, StrapiTag, StrapiMedia, StrapiMenu } from "./types"
+import { typograf, markdownToHtml } from "@/lib/text"
 import { encodeImageToBlurhash } from "./image"
 
 const md = (text: string) => typograf(markdownToHtml(text))
@@ -95,8 +95,8 @@ export async function createPageToken(component: StrapiComponent): Promise<Token
     }
 }
 
-export function createMenu(res: StrapiMenu): IMenu[] {
-    const items: IMenu[] = res.menu.items.map(x => ({
+export function createMenu(res: StrapiMenu): MenuItem[] {
+    const items: MenuItem[] = res.menu.items.map(x => ({
         href: x.page.slug,
         name: x.page.title,
     }))
@@ -107,14 +107,14 @@ export function createMenu(res: StrapiMenu): IMenu[] {
     }, ...items]
 }
 
-export async function createPage(res: StrapiPage | StrapiPage[]): Promise<IPage | null> {
+export async function createPage(res: StrapiPage | StrapiPage[]): Promise<Page | null> {
     const item = asItem(res)
     if (!item) {
         return null
     }
 
     const cover = await getCoverImage(item.cover)
-    const tags: ITag[] = item.tags.map(tag => ({
+    const tags: Tag[] = item.tags.map(tag => ({
         id: tag.id,
         name: tag.name,
         slug: tag.slug,
diff --git a/src/types.ts b/src/types.ts
index f4ec038d..aea19e59 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,9 +1,9 @@
-export interface IMenu {
+export type MenuItem = {
     name: string
     href: string
 }
 
-export interface IBreadcumbsPart {
+export type BreadcrumbPart = {
     name: string
     href: string
 }
@@ -30,7 +30,7 @@ export type FileDefinition = {
     }
 }
 
-export interface IPage {
+export type Page = {
     id: string
     title: string
     url: string
@@ -39,8 +39,8 @@ export interface IPage {
     cover: Pic
     description: string
     tokens: Token[]
-    tags: ITag[]
-    breadcrumb?: IBreadcumbsPart[]
+    tags: Tag[]
+    breadcrumb?: BreadcrumbPart[]
     featured: boolean
 }
 
@@ -51,7 +51,7 @@ export type Sign = {
     signature: string
 }
 
-export interface IDocument {
+export type DocFile = {
     // category: string
     fileName: string
     fileSize: number
@@ -61,7 +61,7 @@ export interface IDocument {
     url: string
 }
 
-export interface IMeta {
+export type Meta = {
     url: string
     siteName: string
     locale: string
@@ -78,7 +78,7 @@ export interface IMeta {
 }
 
 
-export interface ITag {
+export type Tag = {
     id: number
     name: string
     slug: string
diff --git a/tsconfig.json b/tsconfig.json
index 87aed8df..63330e33 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -21,7 +21,7 @@
     "module": "esnext",
     "moduleResolution": "bundler",
     "resolveJsonModule": true,
-    "isolatedModules": true,
+    "verbatimModuleSyntax": true,
     "moduleDetection": "force",
     "jsx": "preserve",
     "incremental": true,