chore: update isolation plugin

web/eslint-plugins/README.md

@@ -132,10 +132,11 @@ hct-авторство.
 фактическому пути, поэтому относительным импортом правило не обойти.
 
 - Старое: `routes/v1/**`, `lib/v1/**`.
-- Новое: `routes/**` без `v1/**`, `lib/components/**`, `lib/registry/**`,
-  `lib/catalog.ts`, `lib/categories.ts`, `lib/tool-icons.ts`,
-  `lib/registry-schema.ts`, `lib/registry-schema.test.ts`.
-- Общее (разрешено обоим): `core/`, `i18n/`, `theme`, `assets/`, корневой `lib`.
+- Новое: `routes/**` без `v1/**`; корневой `lib` целиком (`lib/**`) без
+  `lib/v1/**` и без общих пакетов.
+- Общее (разрешено обоим) — только служебные пакеты: `core/`, `theme`.
+  v1 не высовывается: из `lib/v1/**` наружу разрешены импорты лишь в
+  общие пакеты и в собственный форк i18n (`lib/v1/i18n/**`).
 - Плагин **конфигурируем** (опции `old`/`new` + `root`/`alias` в
   `eslint.config.js`): перенос старых файлов в папки `old/` — это правка
   glob-паттернов в настройке, а не код правила.

web/eslint-plugins/__fixtures__/src/lib/v1/i18n/t.ts

@@ -0,0 +1 @@
+// Fixture stub for lint-rule tests: content is ignored, must exist for import resolution.

web/eslint-plugins/__tests__/no-mixed-imports.test.ts

@@ -7,8 +7,8 @@
 //
 // Side map (mirrors the defaults in no-mixed-imports.js):
 //   old   -> routes/v1/**, lib/v1/**
-//   new   -> routes/** (minus v1), lib/components/**, lib/registry/** + a few
-//   shared-> everything else: core/, i18n/, theme, ...
+//   new   -> routes/** (minus v1), lib/** (minus lib/v1/** and shared)
+//   shared-> everything else: core/, theme
 import { describe, expect, it } from "vitest";
 import noMixedImports from "../isolation/no-mixed-imports.js";
 import { asRuleModule, verifyInFixtures, type FlatConfig } from "./helpers.js";
@@ -80,15 +80,27 @@ describe("isolation/no-mixed-imports", () => {
 		expectClean("lib/v1/old.ts", 'import { e } from "../core/errors";');
 	});
 
-	it("allows old -> shared (i18n and theme via $lib)", () => {
-		expectClean("routes/v1/+layout.svelte", 'import { t } from "$lib/i18n/t";');
+	it("flags old -> root i18n ($lib/i18n is the new branch now)", () => {
+		expectViolation(
+			"routes/v1/+layout.svelte",
+			'import { t } from "$lib/i18n/t";',
+			"old",
+			"new",
+		);
+	});
+
+	it("allows old -> own i18n copy and theme via $lib", () => {
+		expectClean(
+			"routes/v1/+layout.svelte",
+			'import { t } from "$lib/v1/i18n/t";',
+		);
 		expectClean(
 			"routes/v1/+layout.svelte",
 			'import { g } from "$lib/theme.svelte";',
 		);
 	});
 
-	it("allows new -> shared and new -> new", () => {
+	it("allows new -> new (root i18n and components)", () => {
 		expectClean("routes/+page.svelte", 'import { t } from "$lib/i18n/t";');
 		expectClean(
 			"routes/+page.svelte",
@@ -96,11 +108,26 @@ describe("isolation/no-mixed-imports", () => {
 		);
 	});
 
-	it("leaves shared files unrestricted in both directions", () => {
-		expectClean("lib/i18n/t.ts", 'import { o } from "$lib/v1/old";');
+	it("flags new i18n importing old and leaves core shared", () => {
+		expectViolation(
+			"lib/i18n/t.ts",
+			'import { o } from "$lib/v1/old";',
+			"new",
+			"old",
+		);
 		expectClean(
 			"lib/core/errors.ts",
 			'import { c } from "$lib/components/CheckerCanvas.svelte";',
 		);
 	});
+
+	it("keeps the old i18n copy on the old side", () => {
+		expectClean("lib/v1/i18n/t.ts", 'import { o } from "$lib/v1/old";');
+		expectViolation(
+			"lib/v1/i18n/t.ts",
+			'import { c } from "$lib/components/CheckerCanvas.svelte";',
+			"old",
+			"new",
+		);
+	});
 });

web/eslint-plugins/isolation/no-mixed-imports.js

@@ -5,7 +5,7 @@
  * `$lib/...` alias and relative `./` / `../` paths), classifies the source
  * file and each import target by their actual location, and reports whenever an
  * "old" file imports a "new" one or vice versa. Files that match neither side
- * are "shared" (core/, i18n/, theme, assets, tests, ...) and can import freely.
+ * are "shared" (core/, theme, assets, tests, ...) and can import freely.
  *
  * Options (object, all optional):
  *   - root:   path from lint cwd to the source dir (default "src");
@@ -17,21 +17,19 @@
 import fs from "node:fs";
 import path from "node:path";
 
-// NEW declared as an allowlist: `lib/**` descends into v1/ and the shared dirs
-// (core/, i18n/, assets/, theme), so matching by prefix would misclassify them.
-// Negations (`!`) carve old paths out of `routes/**`.
+// NEW declared as an allowlist: `lib/**` descends into v1/ and the shared
+// packages (core/, theme), so negations carve them back out; `routes/**`
+// needs `!routes/v1/**` for the old branch. Last-match-wins
+// (see matchesGlobList).
 const DEFAULT_OLD = ["routes/v1/**", "lib/v1/**"];
 
 const DEFAULT_NEW = [
 	"routes/**",
 	"!routes/v1/**",
-	"lib/components/**",
-	"lib/registry/**",
-	"lib/catalog.ts",
-	"lib/categories.ts",
-	"lib/tool-icons.ts",
-	"lib/registry-schema.ts",
-	"lib/registry-schema.test.ts",
+	"lib/**",
+	"!lib/v1/**",
+	"!lib/core/**",
+	"!lib/theme.svelte.ts",
 ];
 
 /** Escape everything except glob metacharacters, then handle **, *, ?. */