chore: modernize repo tooling and dependencies (#8)

* chore: modernize repo tooling and dependencies

Major dependency updates:
- Migrate redis-storage from redis@3.x to redis@4.x (native promises)
- Update @types/node from 18.19.0 to ^20.0.0
- Upgrade TypeScript from 5.1.6 to ^5.7.0
- Upgrade ESLint from 8.x to 9.x with flat config
- Upgrade Prettier from 2.x to 3.x
- Migrate test framework from Mocha to Vitest

ESM conversion:
- Add "type": "module" to root package.json
- Convert gulpfile.js to ESM syntax

Code quality:
- Remove deprecated bluebird dependency
- Remove old .eslintrc.js in favor of eslint.config.js
- Update tsconfig.json with modern settings (NodeNext modules, ES2022)
- Convert all test files from Mocha/assert to Vitest/expect

* chore: replace gulp with npm scripts

- Remove gulp, del, and glob dependencies
- Add rimraf for cross-platform file deletion
- Convert gulp tasks to npm scripts:
  - clean: removes dist and .tmp directories
  - clean:modules: removes node_modules from packages
  - clean:all: runs both clean tasks
- Remove gulpfile.js

* chore: use modern exports field in package.json

Replace legacy main/types fields with the modern exports field
for all packages. This provides:
- Better encapsulation of package internals
- Proper TypeScript resolution via types condition
- Future-proof for subpath exports if needed

All packages now use:
  "exports": {
    ".": {
      "types": "./dist/index.d.ts",
      "import": "./dist/index.js"
    }
  }

* chore: add changeset

* ci: use GitHub App token for changeset bot

Use a GitHub App token instead of GITHUB_TOKEN so that commits
made by the changeset bot will trigger subsequent workflow runs
(CI checks).

Required setup:
1. Create a GitHub App with Contents: write permission
2. Install the app on the repository
3. Add BOT_APP_ID as a repository variable
4. Add BOT_APP_PRIVATE_KEY as a repository secret

* chore: add .prettierignore to exclude .changeset folder

* fix: increase redis test timeout for CI

* ci: remove custom changeset workflows in favor of official bot

* ci: retry tests

* ci: use Redis service container instead of redis-memory-server in CI

- Add Redis 7 service container to test workflow
- Update redis storage test to use CI Redis when REDIS_HOST/REDIS_PORT set
- Fall back to redis-memory-server for local development
- Fixes timeout issues on Node 20

* chore: remove changeset to test bot flow

* chore: remove redis-memory-server dependency

- Remove redis-memory-server from devDependencies
- Tests now require actual Redis (CI service container or local Docker)
- Faster installs, no 4MB binary download

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: 3 people

.eslintrc.js

@@ -16,6 +16,17 @@ jobs:
         node-version: ['20', '22', '24']
       fail-fast: false
 
+    services:
+      redis:
+        image: redis:7
+        ports:
+          - 6379:6379
+        options: >-
+          --health-cmd "redis-cli ping"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -39,6 +50,8 @@ jobs:
         run: pnpm test
         env:
           CI: true
+          REDIS_HOST: localhost
+          REDIS_PORT: 6379
 
   lint:
     name: Lint & Format

.github/workflows/changeset-bot.yml

@@ -0,0 +1,4 @@
+node_modules
+dist
+.changeset
+pnpm-lock.yaml

.github/workflows/changeset-check.yml

@@ -0,0 +1,25 @@
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+	eslint.configs.recommended,
+	...tseslint.configs.recommended,
+	{
+		languageOptions: {
+			ecmaVersion: 2022,
+			sourceType: 'module',
+			parserOptions: {
+				projectService: true,
+				tsconfigRootDir: import.meta.dirname
+			}
+		},
+		rules: {
+			'@typescript-eslint/no-explicit-any': 'off',
+			'@typescript-eslint/explicit-module-boundary-types': 'off',
+			'@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }]
+		}
+	},
+	{
+		ignores: ['**/dist/**', '**/node_modules/**', '**/*.js', '!eslint.config.js']
+	}
+);