Release v0.3.3 Bug fixes (14 issues closed): - #133/#135: Pool worker READY handshake — loop-read stderr, skip warnings - #134: Use CoSessionManager when coroutines enabled (SessionManager races) - #136: Duplicate PHPSESSID — _session_started flag + static save handler guard - #137: Reject sg(false)+ec(false) at boot (CoSessionManager needs scheduler) - #143: ZEALPHP_CGI_MODE=pool no longer parsed as proc - #142: python3 CGI backend conditional (skip when not installed) - #141: uopz skip guards for ext-zealphp-only environments - #140: CI builds ext-zealphp from pinned submodule - #138: Isolation scope documented (superglobals only, not $GLOBALS) - #132: Copy button works on all pages (moved to global JS) - #130: exec_paths docblock added to registerCgiBackend() - #139: Mode 6 co-state fixture — closed as expected behavior - Reverted premature auto-enable coroutines for sg(true) - Removed auto-wired zealphp_define_hook/constants_clear ext-zealphp v0.3.1: - define() isolation, $GLOBALS isolation, process-state snapshot/clean - Zombie class fix for static property cleanup