refactor: enforce semantic values and numeric lint rules

.ai/CONVENTIONS.md

@@ -9,7 +9,7 @@
 | Создать/перенести module/component/slice; выбрать page/entity/feature/shared; cross-slice imports | [Architecture](conventions/frontend-architecture.md) |
 | Component/props, container/VM/view, form, local state/effect, loading/error/retry, Mantine/UI | [UI](conventions/frontend-ui.md) |
 | Только продуктовая строка или Zod message | [Строки](conventions/frontend-ui.md#строки-и-валидация) |
-| Только TS declaration/import/export | [Код](conventions/frontend-ui.md#код-и-components) |
+| TS declaration/import/export, domain literals, magic values | [Код](conventions/frontend-ui.md#код-и-components) + [Domain literals](conventions/frontend-ui.md#domain-literals-and-magic-values) |
 | query/mutation, shared/api, server state/cache, generated types, Bearer/refresh | [Data](conventions/frontend-data.md) |
 | Тесты или behavior с testing risk | [Testing](conventions/frontend-testing.md) |
 | Новый abstraction/dependency, refactor или неоднозначный scope | [Общий выбор реализации](../../docs/development/engineering-governance.md#выбор-реализации) |

.ai/conventions/frontend-ui.md

@@ -91,6 +91,57 @@ CSF `*.stories.tsx` сохраняют default meta и прямые story export
 Vite/Vitest configs и `.storybook/main.ts`/`preview.tsx` имеют только
 конфигурационное default-export exception. Scope исключений принадлежит biome.json.
 
+## Domain literals and magic values
+
+Finite business vocabulary must be modeled explicitly; incidental implementation
+literals stay inline. Это относится к error codes, statuses, operation/account/
+instrument/transaction types, permissions, roles, feature states и бизнес-режимам.
+
+Перед новым определением найди existing owner/type/value. В branching и comparisons
+используй символическое значение владельца; не повторяй raw domain literals.
+Храни словарь у domain/module/entity с соблюдением границ слоёв, без глобальной
+свалки `constants.ts`. Сохраняй принятый pattern; для нового project-owned словаря
+без подходящего аналога используй `as const` с derived union:
+
+```ts
+const BankErrorCode = {
+  InvalidDate: "BANK_INVALID_DATE",
+  ImmutableOperation: "BANK_IMMUTABLE_OPERATION",
+} as const;
+type BankErrorCode = (typeof BankErrorCode)[keyof typeof BankErrorCode];
+
+// Вместо code === "BANK_INVALID_DATE":
+if (code === BankErrorCode.InvalidDate) { /* existing handling */ }
+```
+
+Значимые numeric policies (timeout, retry, page size, threshold, coefficient)
+называй по смыслу и единицам: `REQUEST_TIMEOUT_MS`, `CACHE_TTL_SECONDS`,
+`MAX_RETRY_COUNT`, `PAGE_SIZE`. Оставляй inline UI labels в принятом месте,
+log messages, индексы, `index + 1`, `Math.max(value, 0)`, `page ?? 1`,
+`percentage * 100` и очевидные локальные детали без semantic benefit.
+При неясном owner/смысле оставь значение и укажи ограничение в review.
+
+Не мигрируй корректные existing enum/union styles массово. Не добавляй ради
+правила factories, registries, schemas, loaders, abstraction layers, dependencies,
+custom lint/AST rules, generation/validation scripts или тесты существования
+констант. Semantic review проверяет ownership, единое написание и неизменность
+wire values; обычные behavior tests проверяют поведение.
+
+Backend API vocabulary бери из generated OpenAPI types/client, runtime values —
+когда генератор их предоставляет. Не создавай ручную копию backend enum/object.
+Текущий `schema.d.ts` предоставляет только types: используй indexed-access type
+из `paths`; typed literals в запросах/сравнениях допустимы при отсутствии
+runtime values. `ProblemDetailsDto.code` сейчас `string`: не выдумывай закрытый
+frontend error enum. Развитие API source — отдельное contract-решение.
+Frontend `enum` по-прежнему запрещён локальным TS/style profile.
+
+`noMagicNumbers` включён как error в Biome. Fixtures, tests и stories исключены
+из этого правила; остальные проверки для них сохраняются. Используй имена
+политик/единиц и existing values. Точечное подавление допустимо для очевидного
+incidental значения с объяснением, например перевода доли в проценты; не подавляй
+скрытые бизнес-лимиты. Semantic magic strings проверяются conventions/review: в
+установленном Biome нет такого встроенного правила, новый инструмент не добавляем.
+
 ## Строки и валидация
 
 Продуктовый текст хранится в `src/shared/i18n/locales/ru.ts`, читается через

biome.json

@@ -27,7 +27,8 @@
 			},
 			"style": {
 				"noDefaultExport": "error",
-				"useExportsLast": "error"
+				"useExportsLast": "error",
+				"noMagicNumbers": "error"
 			}
 		}
 	},
@@ -57,6 +58,21 @@
 					}
 				}
 			}
+		},
+		{
+			"includes": [
+				"**/*.test.ts",
+				"**/*.test.tsx",
+				"**/*.stories.tsx",
+				"src/test/**"
+			],
+			"linter": {
+				"rules": {
+					"style": {
+						"noMagicNumbers": "off"
+					}
+				}
+			}
 		}
 	]
 }

src/app/routes/RouteTransition.tsx

@@ -3,6 +3,8 @@ import * as m from "motion/react-m";
 import type { FC, PropsWithChildren } from "react";
 import { useLocation } from "react-router";
 
+const TRANSITION_DURATION_SECONDS = 0.2;
+
 const RouteTransition: FC<PropsWithChildren> = (props) => {
 	const { children } = props;
 	const { pathname } = useLocation();
@@ -14,7 +16,10 @@ const RouteTransition: FC<PropsWithChildren> = (props) => {
 				key={pathname}
 				initial={reduceMotion ? false : { opacity: 0 }}
 				animate={{ opacity: 1 }}
-				transition={{ duration: reduceMotion ? 0 : 0.2, ease: "easeOut" }}
+				transition={{
+					duration: reduceMotion ? 0 : TRANSITION_DURATION_SECONDS,
+					ease: "easeOut",
+				}}
 			>
 				{children}
 			</m.div>

src/entities/bank-card/api/queries.ts

@@ -30,6 +30,8 @@ type CreateExpenseCategory =
 type UpdateExpenseCategory =
 	paths["/api/v1/bank-cards/categories/{id}"]["patch"]["requestBody"]["content"]["application/json"];
 
+const OPERATIONS_PAGE_SIZE = 100;
+
 function useBankCards(includeArchived = false) {
 	return useAuthenticatedQuery(
 		apiQueryClient.queryOptions("get", "/api/v1/bank-cards", {
@@ -71,7 +73,7 @@ function useBankOperations(
 		query: {
 			...query,
 			page: all ? 1 : query.page,
-			limit: query.limit === "all" ? 100 : query.limit,
+			limit: query.limit === "all" ? OPERATIONS_PAGE_SIZE : query.limit,
 		},
 	};
 	const options = apiQueryClient.queryOptions(
@@ -87,7 +89,7 @@ function useBankOperations(
 		) => {
 			const previous = previousQuery?.queryKey[2]?.params;
 			return !all &&
-				previousQuery?.queryKey.length === 3 &&
+				previousQuery?.queryKey.length === options.queryKey.length &&
 				previous?.path?.id === id &&
 				previous?.query?.month === query.month &&
 				previous?.query?.from === query.from &&

src/entities/bank-card/model/form-validation.ts

@@ -1,6 +1,9 @@
 import { z } from "zod";
 import { validationMessage } from "@/shared/i18n";
 
+const ISO_MONTH_LENGTH = 7;
+const MAX_CARD_NAME_LENGTH = 100;
+
 function bankToday() {
 	return new Intl.DateTimeFormat("en-CA", {
 		timeZone: "Europe/Moscow",
@@ -15,7 +18,7 @@ function bankDateInputValue(value: string) {
 function bankMonth(value: string | null) {
 	return value && /^\d{4}-(0[1-9]|1[0-2])$/.test(value)
 		? value
-		: bankToday().slice(0, 7);
+		: bankToday().slice(0, ISO_MONTH_LENGTH);
 }
 function bankMoneyValue(value: string) {
 	return value
@@ -32,12 +35,15 @@ function moneyCents(value: string): bigint | null {
 		(normalized.startsWith("-") ? -1n : 1n)
 	);
 }
+const MIN_BALANCE_KOPECKS = -9_223_372_036_854_775_808n;
+const MAX_BALANCE_KOPECKS = 9_223_372_036_854_775_807n;
+
 const moneySchema = z.string().refine((value) => {
 	const cents = moneyCents(value);
 	return (
 		cents !== null &&
-		cents >= -9223372036854775808n &&
+		cents >= MIN_BALANCE_KOPECKS &&
-		cents <= 9223372036854775807n
+		cents <= MAX_BALANCE_KOPECKS
 	);
 }, validationMessage("bank.validation.money"));
 const positiveMoneySchema = moneySchema.refine((value) => {
@@ -60,11 +66,17 @@ const bankCardSchema = z.object({
 		.string()
 		.trim()
 		.min(1, validationMessage("bank.validation.name")(undefined))
-		.max(100, validationMessage("bank.validation.name")(undefined)),
+		.max(
+			MAX_CARD_NAME_LENGTH,
+			validationMessage("bank.validation.name")(undefined),
+		),
 	bankName: z
 		.string()
 		.trim()
-		.max(100, validationMessage("bank.validation.bankName")(undefined)),
+		.max(
+			MAX_CARD_NAME_LENGTH,
+			validationMessage("bank.validation.bankName")(undefined),
+		),
 	lastFour: z
 		.string()
 		.refine(

src/entities/bank-card/ui/CategoryManager.tsx

@@ -25,6 +25,8 @@ import classes from "./BankForms.module.css";
 import { BankOperationIcon } from "./BankOperationIcon";
 import { useBankFormFocus } from "./useBankFormFocus";
 
+const MAX_CATEGORY_NAME_LENGTH = 80;
+
 type CategoryManagerProps = {
 	onClose: () => void;
 	onCreated?: (id: string) => void;
@@ -67,7 +69,8 @@ const CategoryManager: FC<CategoryManagerProps> = (props) => {
 					.string()
 					.trim()
 					.refine(
-						(value) => value.length > 0 && value.length <= 80,
+						(value) =>
+							value.length > 0 && value.length <= MAX_CATEGORY_NAME_LENGTH,
 						validationMessage("bank.validation.category"),
 					)
 					.refine(

src/entities/bond/api/queries.ts

@@ -1,6 +1,16 @@
-import { apiQueryClient, useAuthenticatedQuery } from "@/shared/api";
+import {
+	apiQueryClient,
+	type paths,
+	useAuthenticatedQuery,
+} from "@/shared/api";
 
-type BondPeriod = "month" | "halfYear" | "year" | "all";
+type BondPeriod = NonNullable<
+	NonNullable<
+		paths["/api/v1/bonds/{uid}/candles"]["get"]["parameters"]["query"]
+	>["period"]
+>;
+
+const BOND_STALE_TIME_MS = 30_000;
 
 function useBondSearch(query: string) {
 	return useAuthenticatedQuery({
@@ -8,7 +18,7 @@ function useBondSearch(query: string) {
 			params: { query: { query } },
 		}),
 		enabled: query.length >= 2,
-		staleTime: 30_000,
+		staleTime: BOND_STALE_TIME_MS,
 	});
 }
 function bondQueryOptions(uid: string) {
@@ -16,7 +26,7 @@ function bondQueryOptions(uid: string) {
 		...apiQueryClient.queryOptions("get", "/api/v1/bonds/{uid}", {
 			params: { path: { uid } },
 		}),
-		staleTime: 30_000,
+		staleTime: BOND_STALE_TIME_MS,
 	};
 }
 
@@ -35,7 +45,7 @@ function useBond(identifier: string) {
 			params: { path: { ticker: identifier } },
 		}),
 		enabled: Boolean(identifier) && !isUid,
-		staleTime: 30_000,
+		staleTime: BOND_STALE_TIME_MS,
 	});
 	return isUid ? byUid : byTicker;
 }
@@ -45,7 +55,7 @@ function useBondMetrics(uid: string) {
 			params: { path: { uid } },
 		}),
 		enabled: Boolean(uid),
-		staleTime: 30_000,
+		staleTime: BOND_STALE_TIME_MS,
 	});
 }
 function useBondQuote(uid: string) {
@@ -54,7 +64,7 @@ function useBondQuote(uid: string) {
 			params: { path: { uid } },
 		}),
 		enabled: Boolean(uid),
-		staleTime: 30_000,
+		staleTime: BOND_STALE_TIME_MS,
 	});
 }
 function useBondCandles(uid: string, period: BondPeriod) {
@@ -63,7 +73,7 @@ function useBondCandles(uid: string, period: BondPeriod) {
 			params: { path: { uid }, query: { period } },
 		}),
 		enabled: Boolean(uid),
-		staleTime: 30_000,
+		staleTime: BOND_STALE_TIME_MS,
 	});
 }
 function useBondPosition(uid: string) {
@@ -72,7 +82,7 @@ function useBondPosition(uid: string) {
 			params: { path: { uid } },
 		}),
 		enabled: Boolean(uid),
-		staleTime: 30_000,
+		staleTime: BOND_STALE_TIME_MS,
 	});
 }
 function useBondCoupons(uid: string) {
@@ -81,7 +91,7 @@ function useBondCoupons(uid: string) {
 			params: { path: { uid } },
 		}),
 		enabled: Boolean(uid),
-		staleTime: 30_000,
+		staleTime: BOND_STALE_TIME_MS,
 	});
 }
 

src/entities/portfolio/model/display.ts

@@ -9,6 +9,7 @@ function formatShare(
 	if (!numerator || !denominator) return null;
 	const total = Number(denominator.value);
 	if (!Number.isFinite(total) || total <= 0) return null;
+	// biome-ignore lint/style/noMagicNumbers: obvious conversion of a ratio to percent.
 	const percent = (Number(numerator.value) / total) * 100;
 	if (!Number.isFinite(percent)) return null;
 	const rounded = new Intl.NumberFormat("ru-RU", {

src/entities/stock/api/queries.ts

@@ -1,10 +1,17 @@
 import {
 	apiQueryClient,
+	type paths,
 	useAuthenticatedQueries,
 	useAuthenticatedQuery,
 } from "@/shared/api";
 
-type StockPeriod = "month" | "halfYear" | "year" | "all";
+type StockPeriod = NonNullable<
+	NonNullable<
+		paths["/api/v1/stocks/{uid}/candles"]["get"]["parameters"]["query"]
+	>["period"]
+>;
+
+const STOCK_STALE_TIME_MS = 30_000;
 
 function useStockSearch(query: string) {
 	return useAuthenticatedQuery({
@@ -12,7 +19,7 @@ function useStockSearch(query: string) {
 			params: { query: { query } },
 		}),
 		enabled: query.length >= 2,
-		staleTime: 30_000,
+		staleTime: STOCK_STALE_TIME_MS,
 	});
 }
 function stockQueryOptions(uid: string) {
@@ -20,7 +27,7 @@ function stockQueryOptions(uid: string) {
 		...apiQueryClient.queryOptions("get", "/api/v1/stocks/{uid}", {
 			params: { path: { uid } },
 		}),
-		staleTime: 30_000,
+		staleTime: STOCK_STALE_TIME_MS,
 	};
 }
 
@@ -47,7 +54,7 @@ function useStock(identifier: string) {
 			params: { path: { ticker: identifier } },
 		}),
 		enabled: Boolean(identifier) && !isUid,
-		staleTime: 30_000,
+		staleTime: STOCK_STALE_TIME_MS,
 	});
 	return isUid ? byUid : byTicker;
 }
@@ -57,7 +64,7 @@ function useStockQuote(uid: string) {
 			params: { path: { uid } },
 		}),
 		enabled: Boolean(uid),
-		staleTime: 30_000,
+		staleTime: STOCK_STALE_TIME_MS,
 	});
 }
 function useStockCandles(uid: string, period: StockPeriod) {
@@ -66,7 +73,7 @@ function useStockCandles(uid: string, period: StockPeriod) {
 			params: { path: { uid }, query: { period } },
 		}),
 		enabled: Boolean(uid),
-		staleTime: 30_000,
+		staleTime: STOCK_STALE_TIME_MS,
 	});
 }
 function useStockPosition(uid: string) {
@@ -75,7 +82,7 @@ function useStockPosition(uid: string) {
 			params: { path: { uid } },
 		}),
 		enabled: Boolean(uid),
-		staleTime: 30_000,
+		staleTime: STOCK_STALE_TIME_MS,
 	});
 }
 function useStockCompany(uid: string) {
@@ -84,7 +91,7 @@ function useStockCompany(uid: string) {
 			params: { path: { uid } },
 		}),
 		enabled: Boolean(uid),
-		staleTime: 30_000,
+		staleTime: STOCK_STALE_TIME_MS,
 	});
 }
 function useStockDividends(uid: string) {
@@ -93,7 +100,7 @@ function useStockDividends(uid: string) {
 			params: { path: { uid } },
 		}),
 		enabled: Boolean(uid),
-		staleTime: 30_000,
+		staleTime: STOCK_STALE_TIME_MS,
 	});
 }
 

src/features/auth/model/validation.ts

@@ -1,11 +1,17 @@
 import { z } from "zod";
 import { validationMessage } from "@/shared/i18n";
 
+const ASCII_SPACE = 32;
+const ASCII_DELETE = 127;
+const MAX_EMAIL_LENGTH = 254;
+const MIN_PASSWORD_BYTES = 12;
+const MAX_PASSWORD_BYTES = 72;
+
 function isEmailCharacterInvalid(character: string): boolean {
 	return (
 		/\s/.test(character) ||
-		character.charCodeAt(0) < 32 ||
+		character.charCodeAt(0) < ASCII_SPACE ||
-		character.charCodeAt(0) === 127
+		character.charCodeAt(0) === ASCII_DELETE
 	);
 }
 
@@ -13,7 +19,7 @@ const email = z
 	.string()
 	.trim()
 	.toLowerCase()
-	.max(254)
+	.max(MAX_EMAIL_LENGTH)
 	.refine(
 		(value) =>
 			value.split("@").length === 2 &&
@@ -25,8 +31,8 @@ const password = z
 	.string()
 	.refine(
 		(value) =>
-			new TextEncoder().encode(value).length >= 12 &&
+			new TextEncoder().encode(value).length >= MIN_PASSWORD_BYTES &&
-			new TextEncoder().encode(value).length <= 72,
+			new TextEncoder().encode(value).length <= MAX_PASSWORD_BYTES,
 		validationMessage("auth.validation.invalidPasswordLength"),
 	);
 

src/features/instrument-details/ui/InstrumentSection.view.tsx

@@ -14,6 +14,9 @@ import { LoadingSkeleton } from "@/shared/ui";
 import type { SectionState } from "../model/section";
 import classes from "./InstrumentDetails.module.css";
 
+const CHART_SKELETON_HEIGHT_PX = 280;
+const SECTION_SKELETON_HEIGHT_PX = 65;
+
 type InstrumentSectionProps = PropsWithChildren<{
 	title: string;
 	state: SectionState;
@@ -59,7 +62,13 @@ const InstrumentSection: FC<InstrumentSectionProps> = (props) => {
 					label={t("stock.loadingSection", { section: props.title })}
 				>
 					<Stack>
-						<Skeleton h={props.large ? 280 : 65} />
+						<Skeleton
+							h={
+								props.large
+									? CHART_SKELETON_HEIGHT_PX
+									: SECTION_SKELETON_HEIGHT_PX
+							}
+						/>
 						<Skeleton h={14} w="60%" />
 					</Stack>
 				</LoadingSkeleton>

src/pages/account-events/ui/components/AccountEventsPageLoading.view.tsx

@@ -3,6 +3,8 @@ import type { FC } from "react";
 import { useTranslation } from "react-i18next";
 import { LoadingSkeleton } from "@/shared/ui";
 
+const skeletonRowIds = ["first", "second", "third", "fourth"];
+
 const AccountEventsPageLoading: FC = () => {
 	const { t } = useTranslation();
 	return (
@@ -17,8 +19,8 @@ const AccountEventsPageLoading: FC = () => {
 				<Skeleton height={36} width={116} />
 				<Skeleton height={36} width={108} />
 			</Group>
-			{[0, 1, 2, 3].map((index) => (
+			{skeletonRowIds.map((id) => (
-				<Skeleton key={index} height={82} radius="md" />
+				<Skeleton key={id} height={82} radius="md" />
 			))}
 		</LoadingSkeleton>
 	);

src/pages/account-income/ui/AccountIncomePage.vm.ts

@@ -7,6 +7,8 @@ import { type IncomeAnalytics, useIncomeAnalytics } from "@/entities/income";
 import { validationMessage } from "@/shared/i18n";
 import { formatDate } from "@/shared/lib";
 
+const ISO_MONTH_LENGTH = 7;
+
 type IncomePeriod = { from: string; to: string };
 type IncomeForm = IncomePeriod;
 
@@ -143,7 +145,7 @@ function draftPeriod(period: IncomePeriod): IncomeForm {
 
 function defaultPeriod(): IncomePeriod {
 	const today = moscowDate(new Date());
-	return { from: `${today.slice(0, 7)}-01`, to: today };
+	return { from: `${today.slice(0, ISO_MONTH_LENGTH)}-01`, to: today };
 }
 
 function validPeriod(period: IncomePeriod): period is IncomePeriod {

src/pages/account-operations/ui/components/AccountOperationsPageLoading.view.tsx

@@ -3,6 +3,8 @@ import type { FC } from "react";
 import { useTranslation } from "react-i18next";
 import { LoadingSkeleton } from "@/shared/ui";
 
+const skeletonRowIds = ["first", "second", "third", "fourth"];
+
 const AccountOperationsPageLoading: FC = () => {
 	const { t } = useTranslation();
 
@@ -19,8 +21,8 @@ const AccountOperationsPageLoading: FC = () => {
 				<Skeleton height={36} width={110} radius="sm" />
 			</Group>
 			<Stack gap="xs">
-				{[0, 1, 2, 3].map((index) => (
+				{skeletonRowIds.map((id) => (
-					<Skeleton key={index} height={64} radius="md" />
+					<Skeleton key={id} height={64} radius="md" />
 				))}
 			</Stack>
 		</LoadingSkeleton>

src/pages/account/ui/AccountPage.vm.ts

@@ -17,6 +17,8 @@ import { useStocks } from "@/entities/stock";
 import { apiErrorCode } from "@/shared/api";
 import { formatMoney, instrumentLogoUrl } from "@/shared/lib";
 
+const RECENT_EVENTS_LIMIT = 5;
+
 type PositionSectionKind = "stocks" | "bonds" | "other";
 type AccountPageReturnTone = "positive" | "negative";
 
@@ -176,7 +178,7 @@ function toRecentEvents(
 	const to = `/accounts/${accountId}/events`;
 	if (events.isLoading) return { state: "loading", to };
 	if (events.isError) return { state: "error", to };
-	const items = events.data?.events.slice(0, 5) ?? [];
+	const items = events.data?.events.slice(0, RECENT_EVENTS_LIMIT) ?? [];
 	if (!items.length) return { state: "empty", to };
 	return { state: "loaded", to, items };
 }

src/pages/account/ui/components/PortfolioStructure.tsx

@@ -4,6 +4,8 @@ import type { Portfolio } from "@/entities/portfolio";
 import { formatMoney } from "@/shared/lib";
 import { PortfolioStructureView } from "./PortfolioStructure.view";
 
+const MIN_VISIBLE_SHARE_PERCENT = 0.01;
+
 // A cached snapshot or an older running server can predate this response field.
 type PortfolioStructureProps = { structure?: Portfolio["structure"] | null };
 
@@ -45,7 +47,7 @@ const PortfolioStructure: FC<PortfolioStructureProps> = (props) => {
 					share:
 						percentage === null
 							? t("portfolio.structure.shareUnavailable")
-							: percentage > 0 && percentage < 0.01
+							: percentage > 0 && percentage < MIN_VISIBLE_SHARE_PERCENT
 								? t("portfolio.structure.smallShare")
 								: `${new Intl.NumberFormat("ru-RU", { maximumFractionDigits: 2 }).format(percentage)} %`,
 					value: percentage ?? 0,

src/pages/bonds/ui/BondsPage.vm.ts

@@ -4,10 +4,12 @@ import { useBondSearch } from "@/entities/bond";
 import { apiErrorCode } from "@/shared/api";
 import { instrumentLogoUrl } from "@/shared/lib";
 
+const SEARCH_DEBOUNCE_MS = 300;
+
 function useBondsPageVm() {
 	const [params, setParams] = useSearchParams();
 	const query = params.get("q") ?? "";
-	const [debounced] = useDebouncedValue(query.trim(), 300);
+	const [debounced] = useDebouncedValue(query.trim(), SEARCH_DEBOUNCE_MS);
 	const result = useBondSearch(debounced);
 	const waiting = query.trim() !== debounced;
 	return {

src/pages/card/ui/OperationForm.tsx

@@ -26,6 +26,8 @@ import classes from "./OperationForm.module.css";
 import type { OperationValues } from "./OperationForm.types";
 import { OperationFields, RefundFields } from "./OperationForm.view";
 
+const MAX_DESCRIPTION_LENGTH = 500;
+
 const operationSchema = z.object({
 	kind: z.enum(["expense", "topup", "transfer", "refund"]),
 	cardId: z.string(),
@@ -36,7 +38,10 @@ const operationSchema = z.object({
 	date: bankDateSchema,
 	description: z
 		.string()
-		.max(500, validationMessage("bank.validation.description")(undefined)),
+		.max(
+			MAX_DESCRIPTION_LENGTH,
+			validationMessage("bank.validation.description")(undefined),
+		),
 });
 
 type OperationFormProps = {

src/pages/stocks/ui/StocksPage.vm.ts

@@ -4,10 +4,12 @@ import { useStockSearch } from "@/entities/stock";
 import { apiErrorCode } from "@/shared/api";
 import { instrumentLogoUrl } from "@/shared/lib";
 
+const SEARCH_DEBOUNCE_MS = 300;
+
 function useStocksPageVm() {
 	const [params, setParams] = useSearchParams();
 	const query = params.get("q") ?? "";
-	const [debounced] = useDebouncedValue(query.trim(), 300);
+	const [debounced] = useDebouncedValue(query.trim(), SEARCH_DEBOUNCE_MS);
 	const result = useStockSearch(debounced);
 	const waiting = query.trim() !== debounced;
 	return {

src/shared/api/client.ts

@@ -3,6 +3,8 @@ import createQueryClient from "openapi-react-query";
 
 import type { paths } from "./generated/schema";
 
+const HTTP_UNAUTHORIZED = 401;
+
 const apiBaseUrl = import.meta.env.VITE_API_BASE_URL ?? "http://localhost:3000";
 
 type AuthHandlers = {
@@ -50,7 +52,7 @@ async function authenticatedFetch(request: Request): Promise<Response> {
 	const retryRequest = authorized.clone();
 	const response = await fetch(authorized);
 	if (
-		response.status !== 401 ||
+		response.status !== HTTP_UNAUTHORIZED ||
 		isAuthRequest ||
 		!auth ||
 		(