chore: deduplicate model selector, auto-extract chromium version, harden update pipeline

fix: tighten JS detection regex in extract-fingerprint to catch more minified patterns

feat: add libcurl-impersonate FFI transport for Chrome TLS fingerprint

feat: auto proxy detection for curl + tighten dashboard layout

feat: desktop context injection, multi-turn sessions, TLS impersonation & auto-update

feat: architecture audit — disguise hardening, update automation, robustness

Initial commit: Codex Proxy with quota API and Cloudflare bypass