v0.4.1: Chrome cookie import, config.json, session persistence

- Add Chrome cookie importer (macOS Keychain AES-128-CBC decryption)
- Add ~/.config/browse/config.json (headless, fullscreen, stealth, preview defaults)
- Add ~/.config/browse/session.json (auto-save/restore cookies + localStorage)
- Auto-import from all browsers (Safari + Firefox + Chrome) on first launch
- Deduplicate cookies across browsers (domain+name+path key)
- Defaults: headed, fullscreen, stealth, preview all enabled
- Fix BigInt overflow for Chrome timestamps (CAST to TEXT in SQL)

dist/types.d.ts

@@ -255,7 +255,7 @@ export interface EmulateCommand {
 }
 export interface ImportCommand {
     cmd: 'import';
-    source: 'safari' | 'firefox';
+    source: 'safari' | 'firefox' | 'chrome';
     domain?: string;
     profile?: string;
 }