feat: initial dev-configs monorepo

Shared configs for TypeScript projects: ESLint, Prettier, TypeScript,
Vite, Jest, Playwright, Knip. Published as @vigdorov/* npm packages
to Gitea registry.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/playwright/src/index.ts

@@ -0,0 +1,29 @@
+import type {PlaywrightTestConfig} from '@playwright/test';
+
+export interface PlaywrightConfigOptions {
+    baseURL: string;
+    testDir?: string;
+    retries?: number;
+}
+
+export function playwrightConfig(options: PlaywrightConfigOptions): PlaywrightTestConfig {
+    const {baseURL, testDir = 'e2e', retries} = options;
+    const isCI = !!process.env.CI;
+
+    return {
+        testDir,
+        timeout: 30_000,
+        retries: retries ?? (isCI ? 2 : 0),
+        reporter: isCI ? 'html' : 'list',
+        use: {
+            baseURL,
+            trace: 'on-first-retry',
+            screenshot: 'only-on-failure',
+        },
+        projects: [
+            {name: 'chromium', use: {browserName: 'chromium'}},
+            {name: 'firefox', use: {browserName: 'firefox'}},
+            {name: 'webkit', use: {browserName: 'webkit'}},
+        ],
+    };
+}