Reset version to 1.0.0 and add TODO/CHANGELOG

Reset all Path A script versions from 3.x to 1.0.0 following architectural
decision to treat this as a fresh stable baseline after the Path B cleanup.
Added TODO.md with prioritized audit findings and replaced the old CHANGELOG
with a clean stub.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

install

@@ -8,7 +8,7 @@ install_hops() {
     set -e
 
     # Script version for update tracking
-    local SCRIPT_VERSION="3.2.0"
+    local SCRIPT_VERSION="1.0.0"
     local SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
     # Load system utilities