06ec13ead8
CRITICAL BUG FIXES: - [C1] IFS modification without restoration (line 390) Problem: Changed IFS to '|' but never restored, affecting all subsequent word splitting Fix: Save/restore IFS around read operation to prevent scope pollution - [C2] Unprotected cd commands without error checking (5 instances) Lines: 545, 822, 830, 845, 986 Problem: If cd fails, subsequent commands execute in wrong directory Impact: Could corrupt system, install to wrong location Fix: Added error checking: cd /tmp || return 1 (or handle gracefully) IMPROVEMENTS: - Word splitting now works correctly throughout script - Directory changes are validated before proceeding - Cleanup operations fail gracefully if cd fails All syntax validated (bash -n: PASS)