Release 0.1: Complete BinectChrome implementation

Implements all requirements from ProductRequirementsDocument.md:
- PDF detection via Chrome Downloads API
- Secure credential storage with AES-GCM encryption
- Binect API integration for PDF uploads
- Popup UI with Binect branding
- Local transfer tracking (500 entry cap)
- Help page with tracking view and CSV export
- 60-day credential retention with auto-expiry
- Accessibility compliance (WCAG 2.1 AA)

Technical implementation:
- Chrome Extension Manifest V3
- TypeScript with strict mode
- Webpack build system
- Jest test suite (22/22 passing)
- ESLint configured (0 errors)

Build output: 13 KB total (production minified)
Test coverage: crypto, pdf-detector, tracker, binect-api

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

tests/setup.ts

@@ -0,0 +1,93 @@
+/**
+ * Jest test setup
+ * Mocks browser APIs
+ */
+
+import { webcrypto } from 'crypto';
+
+// Mock Web Crypto API
+Object.defineProperty(globalThis, 'crypto', {
+  value: webcrypto
+});
+
+// Mock Chrome API
+const mockChrome = {
+  storage: {
+    local: {
+      get: jest.fn(),
+      set: jest.fn(),
+      remove: jest.fn(),
+      clear: jest.fn()
+    }
+  },
+  runtime: {
+    sendMessage: jest.fn(),
+    onMessage: {
+      addListener: jest.fn()
+    },
+    onInstalled: {
+      addListener: jest.fn()
+    },
+    onStartup: {
+      addListener: jest.fn()
+    },
+    getURL: jest.fn((path) => `chrome-extension://test/${path}`)
+  },
+  downloads: {
+    search: jest.fn(),
+    onChanged: {
+      addListener: jest.fn()
+    }
+  },
+  action: {
+    setBadgeText: jest.fn(),
+    setBadgeBackgroundColor: jest.fn()
+  },
+  alarms: {
+    create: jest.fn(),
+    onAlarm: {
+      addListener: jest.fn()
+    }
+  },
+  tabs: {
+    create: jest.fn(),
+    onUpdated: {
+      addListener: jest.fn()
+    },
+    query: jest.fn()
+  }
+};
+
+Object.defineProperty(globalThis, 'chrome', {
+  value: mockChrome,
+  writable: true
+});
+
+// Mock fetch
+Object.defineProperty(globalThis, 'fetch', {
+  value: jest.fn(),
+  writable: true
+});
+
+// Mock btoa/atob
+Object.defineProperty(globalThis, 'btoa', {
+  value: (str: string) => Buffer.from(str, 'binary').toString('base64'),
+  writable: true
+});
+
+Object.defineProperty(globalThis, 'atob', {
+  value: (str: string) => Buffer.from(str, 'base64').toString('binary'),
+  writable: true
+});
+
+// Mock TextEncoder/TextDecoder (from util)
+import { TextEncoder, TextDecoder } from 'util';
+Object.defineProperty(globalThis, 'TextEncoder', {
+  value: TextEncoder,
+  writable: true
+});
+
+Object.defineProperty(globalThis, 'TextDecoder', {
+  value: TextDecoder,
+  writable: true
+});