Improve log rotation, early-exit find_bundle, fix uninstall orphaned backup

apply.sh: preserve two log generations (.1 and .2) on rotation so the
last two boots are always available for diagnosis.

patch_ui.py: find_bundle returns on the first matching JS file instead of
collecting all matches. The multi-match warning was dead weight — the Angular
Ivy compiler produces exactly one bundle and the WARNING path was unreachable
in practice.

uninstall.sh: restore an orphaned sitecustomize.py.pre-truecloud-patch when
sitecustomize.py itself has already been removed (e.g. manual deletion while
the backup survived). Prevents leaving ghost vendor files in site-packages.

patch/apply.sh

@@ -22,7 +22,9 @@ PATCH_DIR="/data/truecloud-patch"
 LOG="$PATCH_DIR/apply.log"
 
 # Rotate log at 512 KB to avoid unbounded growth on a system volume.
+# Keep one prior generation (.1) so the last two boots are always available.
 if [ -f "$LOG" ] && [ "$(wc -c < "$LOG")" -gt 524288 ]; then
+    [ -f "${LOG}.1" ] && mv "${LOG}.1" "${LOG}.2"
     mv "$LOG" "${LOG}.1"
 fi