fix: align password validation with backend ASCII policy (WealthLedger/backend#60)

Register requires 8-72 printable ASCII characters; login only caps the
password at 72 bytes and no longer enforces a minimum, so accounts created
under the previous policy can still sign in.

OpenAPI snapshot is delivered from backend and schema.d.ts regenerated with
npm run openapi:generate (CredentialsDto is now RegisterDto and LoginDto).

src/features/auth/model/auth.schema.test.ts

@@ -0,0 +1,55 @@
+import { describe, expect, it } from "vitest";
+
+import { loginSchema, registerSchema } from "./auth.schema";
+
+const email = "user@example.com";
+
+function canLogIn(password: string) {
+	return loginSchema.safeParse({ email, password }).success;
+}
+
+function canRegister(password: string, confirmation = password) {
+	return registerSchema.safeParse({
+		email,
+		password,
+		passwordConfirmation: confirmation,
+	}).success;
+}
+
+// Register policy: 8..72 printable ASCII (bcrypt reads 72 bytes, so non-ASCII could be
+// truncated). Login stays lenient so accounts created under the old policy still sign in.
+describe("auth password policy", () => {
+	it.each([
+		["7 chars", "a".repeat(7), false],
+		["8 chars", "a".repeat(8), true],
+		["72 chars", "a".repeat(72), true],
+		["73 chars", "a".repeat(73), false],
+		["printable symbols and space", "Aa1 !~\"#$%&'()*+,-./:;<=>?@", true],
+		["Cyrillic, 8+ chars", "пароль-пароль", false],
+		["emoji", "passw😀rd", false],
+		["tab", "pass\tword1", false],
+		["newline", "password1\n", false],
+		["DEL", "password\u{7F}1", false],
+	])("register: %s", (_, password, accepted) => {
+		expect(canRegister(password)).toBe(accepted);
+	});
+
+	it("register compares the raw password with its confirmation", () => {
+		const padded = "  spaced pass  ";
+
+		expect(canRegister(padded)).toBe(true);
+		expect(canRegister(padded, padded.trim())).toBe(false);
+	});
+
+	it.each([
+		["legacy Cyrillic password", "пароль-пароль", true],
+		["short legacy password", "short", true],
+		["72 bytes", "a".repeat(72), true],
+		["73 bytes", "a".repeat(73), false],
+		["36 Cyrillic letters = 72 bytes", "я".repeat(36), true],
+		["37 Cyrillic letters = 74 bytes", "я".repeat(37), false],
+		["empty", "", false],
+	])("login: %s", (_, password, accepted) => {
+		expect(canLogIn(password)).toBe(accepted);
+	});
+});

src/features/auth/model/auth.schema.ts

@@ -7,8 +7,10 @@ const EMAIL_PART_COUNT = 2;
 const ASCII_SPACE = 32;
 const ASCII_DELETE = 127;
 const MAX_EMAIL_LENGTH = 254;
-const MIN_PASSWORD_BYTES = 12;
+const MIN_PASSWORD_LENGTH = 8;
 const MAX_PASSWORD_BYTES = 72;
+// Printable ASCII keeps characters == bytes, within the bcrypt 72-byte limit.
+const ASCII_TILDE = 126;
 
 function isEmailCharacterInvalid(character: string): boolean {
 	const codePoint = character.codePointAt(0);
@@ -20,6 +22,14 @@ function isEmailCharacterInvalid(character: string): boolean {
 	);
 }
 
+function isPrintableAscii(value: string): boolean {
+	return value.split("").every((character) => {
+		const code = character.codePointAt(0) ?? 0;
+
+		return code >= ASCII_SPACE && code <= ASCII_TILDE;
+	});
+}
+
 const email = z
 	.string()
 	.trim()
@@ -33,28 +43,42 @@ const email = z
 		{ error: validationMessage("auth.validation.invalidEmail") },
 	);
 
-const password = z
+// Login stays lenient: accounts created under an older policy must still sign in.
+const loginPassword = z
 	.string()
+	.min(1)
 	.refine(
-		value =>
-			new TextEncoder().encode(value).length >= MIN_PASSWORD_BYTES
-				&& new TextEncoder().encode(value).length <= MAX_PASSWORD_BYTES,
-		{ error: validationMessage("auth.validation.invalidPasswordLength") },
+		value => new TextEncoder().encode(value).length <= MAX_PASSWORD_BYTES,
+		{ error: validationMessage("auth.validation.passwordTooLong") },
 	);
 
+const registerPassword = z
+	.string()
+	.min(MIN_PASSWORD_LENGTH, {
+		error: validationMessage("auth.validation.invalidPasswordLength"),
+	})
+	.max(MAX_PASSWORD_BYTES, {
+		error: validationMessage("auth.validation.invalidPasswordLength"),
+	})
+	.refine(isPrintableAscii, {
+		error: validationMessage("auth.validation.invalidPasswordLength"),
+	});
+
 const loginSchema = z.object({
 	email,
-	password,
+	password: loginPassword,
 	passwordConfirmation: z.string().optional(),
 });
 
-const registerSchema = loginSchema.refine(
-	value => value.password === value.passwordConfirmation,
-	{
-		error: validationMessage("auth.validation.passwordsDoNotMatch"),
-		path: ["passwordConfirmation"],
-	},
-);
+const registerSchema = loginSchema
+	.extend({ password: registerPassword })
+	.refine(
+		value => value.password === value.passwordConfirmation,
+		{
+			error: validationMessage("auth.validation.passwordsDoNotMatch"),
+			path: ["passwordConfirmation"],
+		},
+	);
 
 type AuthFormValues = z.input<typeof loginSchema>;
 

src/features/auth/ui/AuthForm/AuthForm.test.tsx

@@ -70,4 +70,39 @@ describe("AuthForm", () => {
 		resolve();
 		await screen.findByRole("link", { name: linkLabel });
 	});
+
+	// Register policy is 8..72 printable ASCII; login accepts legacy passwords.
+	it.each([
+		["register", "Регистрация", "пароль-пароль", false],
+		["register", "Регистрация", "passw😀rd", false],
+		["register", "Регистрация", "a".repeat(7), false],
+		["register", "Регистрация", "a".repeat(8), true],
+		["register", "Регистрация", "a".repeat(72), true],
+		["register", "Регистрация", "a".repeat(73), false],
+		["login", "Вход", "пароль-пароль", true],
+	])("%s submits password %j: %s", async (mode, submitLabel, password, submitted) => {
+		const onSubmit = vi.fn().mockResolvedValue(undefined);
+
+		render(
+			<MantineProvider>
+				<MemoryRouter>
+					<AuthForm onSubmit={onSubmit} register={mode === "register"} />
+				</MemoryRouter>
+			</MantineProvider>,
+		);
+
+		fireEvent.change(screen.getByLabelText("Email"), { target: { value: "user@example.com" } });
+		fireEvent.change(screen.getByLabelText("Пароль"), { target: { value: password } });
+
+		if (mode === "register") {
+			fireEvent.change(screen.getByLabelText("Подтвердите пароль"), { target: { value: password } });
+		}
+
+		fireEvent.click(screen.getByRole("button", { name: submitLabel }));
+
+		await waitFor(() => expect(
+			screen.queryByText(/Пароль: от 8 до 72 символов/) === null,
+		).toBe(submitted));
+		expect(onSubmit).toHaveBeenCalledTimes(submitted ? 1 : 0);
+	});
 });

src/shared/api/generated/schema.d.ts

@@ -746,10 +746,13 @@ export interface components {
                 detail: string;
             }[];
         };
-        CredentialsDto: {
+        RegisterDto: {
             /** @example user@example.com */
             email: string;
-            /** @example a secure password */
+            /**
+             * @description Raw password: 8-72 printable ASCII characters (letters, digits, symbols, space). Not trimmed or normalized.
+             * @example a secure password
+             */
             password: string;
         };
         UserDto: {
@@ -760,6 +763,15 @@ export interface components {
             accessToken: string;
             user: components["schemas"]["UserDto"];
         };
+        LoginDto: {
+            /** @example user@example.com */
+            email: string;
+            /**
+             * @description Raw password, at most 72 UTF-8 bytes. Not trimmed or normalized.
+             * @example a secure password
+             */
+            password: string;
+        };
         MoneyDto: {
             currency: string;
             value: string;
@@ -1708,7 +1720,7 @@ export interface operations {
         };
         requestBody: {
             content: {
-                "application/json": components["schemas"]["CredentialsDto"];
+                "application/json": components["schemas"]["RegisterDto"];
             };
         };
         responses: {
@@ -1776,7 +1788,7 @@ export interface operations {
         };
         requestBody: {
             content: {
-                "application/json": components["schemas"]["CredentialsDto"];
+                "application/json": components["schemas"]["LoginDto"];
             };
         };
         responses: {

src/shared/api/spec/openapi.json

@@ -10,7 +10,7 @@
           "content": {
             "application/json": {
               "schema": {
-                "$ref": "#/components/schemas/CredentialsDto"
+                "$ref": "#/components/schemas/RegisterDto"
               }
             }
           }
@@ -91,7 +91,7 @@
           "content": {
             "application/json": {
               "schema": {
-                "$ref": "#/components/schemas/CredentialsDto"
+                "$ref": "#/components/schemas/LoginDto"
               }
             }
           }
@@ -5236,7 +5236,7 @@
           "code"
         ]
       },
-      "CredentialsDto": {
+      "RegisterDto": {
         "type": "object",
         "properties": {
           "email": {
@@ -5245,8 +5245,8 @@
           },
           "password": {
             "type": "string",
-            "minLength": 12,
-            "maxLength": 72,
+            "description": "Raw password: 8-72 printable ASCII characters (letters, digits, symbols, space). Not trimmed or normalized.",
+            "pattern": "^[\\x20-\\x7E]{8,72}$",
             "example": "a secure password"
           }
         },
@@ -5285,6 +5285,24 @@
           "user"
         ]
       },
+      "LoginDto": {
+        "type": "object",
+        "properties": {
+          "email": {
+            "type": "string",
+            "example": "user@example.com"
+          },
+          "password": {
+            "type": "string",
+            "description": "Raw password, at most 72 UTF-8 bytes. Not trimmed or normalized.",
+            "example": "a secure password"
+          }
+        },
+        "required": [
+          "email",
+          "password"
+        ]
+      },
       "MoneyDto": {
         "type": "object",
         "properties": {

src/shared/i18n/locales/ru.ts

@@ -55,8 +55,9 @@ const ru = {
 			requestError: "Не удалось выполнить запрос. Попробуйте ещё раз.",
 			validation: {
 				invalidEmail: "Некорректный email",
-				invalidPasswordLength: "Пароль должен содержать от 12 до 72 байт",
+				invalidPasswordLength: "Пароль: от 8 до 72 символов, только латинские буквы, цифры, спецсимволы и пробел",
 				passwordsDoNotMatch: "Пароли не совпадают",
+				passwordTooLong: "Пароль не должен превышать 72 байта",
 			},
 		},
 		bank: {