feat(MQ-001): initialize pnpm workspace with strict TS lint and vitest

.gitignore

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+node_modules
+.pnpm-store
+coverage
+*.log
+.env
+.env.*
+packages/*/dist

eslint.config.mjs

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+import tseslintPlugin from '@typescript-eslint/eslint-plugin';
+import tseslintParser from '@typescript-eslint/parser';
+
+export default [
+  {
+    ignores: ['**/dist/**', '**/node_modules/**', '**/coverage/**'],
+  },
+  {
+    files: ['**/*.ts'],
+    languageOptions: {
+      parser: tseslintParser,
+      parserOptions: {
+        projectService: true,
+        tsconfigRootDir: import.meta.dirname,
+      },
+    },
+    plugins: {
+      '@typescript-eslint': tseslintPlugin,
+    },
+    rules: {
+      ...tseslintPlugin.configs['recommended-type-checked'].rules,
+      ...tseslintPlugin.configs['stylistic-type-checked'].rules,
+      '@typescript-eslint/consistent-type-imports': [
+        'error',
+        {
+          prefer: 'type-imports',
+        },
+      ],
+      '@typescript-eslint/no-floating-promises': 'error',
+    },
+  },
+];

package.json

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+{
+  "name": "mosaic-queue-workspace",
+  "private": true,
+  "packageManager": "pnpm@10.6.2",
+  "scripts": {
+    "lint": "pnpm -r --if-present lint",
+    "build": "pnpm -r --if-present build",
+    "test": "pnpm -r --if-present test"
+  },
+  "devDependencies": {
+    "@types/node": "^22.13.10",
+    "@typescript-eslint/eslint-plugin": "^8.27.0",
+    "@typescript-eslint/parser": "^8.27.0",
+    "eslint": "^9.22.0",
+    "typescript": "^5.8.2",
+    "vitest": "^3.0.8"
+  }
+}

packages/queue/package.json

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+{
+  "name": "@mosaic/queue",
+  "version": "0.0.1",
+  "description": "Valkey-backed task queue exposed via CLI and MCP",
+  "type": "module",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "lint": "eslint \"src/**/*.ts\" \"tests/**/*.ts\" \"vitest.config.ts\"",
+    "build": "tsc -p tsconfig.build.json",
+    "test": "vitest run"
+  }
+}

packages/queue/src/index.ts

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+export const packageVersion = '0.0.1';

packages/queue/tests/smoke.test.ts

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+import { describe, expect, it } from 'vitest';
+
+import { packageVersion } from '../src/index.js';
+
+describe('package bootstrap', () => {
+  it('exposes package version constant', () => {
+    expect(packageVersion).toBe('0.0.1');
+  });
+});

packages/queue/tsconfig.build.json

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+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "noEmit": false,
+    "rootDir": "src",
+    "outDir": "dist"
+  },
+  "include": ["src/**/*.ts"],
+  "exclude": ["tests/**/*"]
+}

packages/queue/tsconfig.json

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+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "noEmit": true,
+    "rootDir": "."
+  },
+  "include": ["src/**/*.ts", "tests/**/*.ts", "vitest.config.ts"]
+}

packages/queue/vitest.config.ts

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+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    environment: 'node',
+    include: ['tests/**/*.test.ts'],
+  },
+});

pnpm-workspace.yaml

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+packages:
+  - packages/*

tsconfig.base.json

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+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "strict": true,
+    "noImplicitOverride": true,
+    "noUncheckedIndexedAccess": true,
+    "exactOptionalPropertyTypes": true,
+    "useUnknownInCatchVariables": true,
+    "forceConsistentCasingInFileNames": true,
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "resolveJsonModule": true,
+    "declaration": true,
+    "sourceMap": true,
+    "types": ["node"]
+  }
+}