Two bugs:
1. hasattr(B2RcloneRemote, "get_restic_config") returned True because the base
class defines the method (it just raises NotImplementedError). The method was
never added to B2RcloneRemote. Fixed: use __dict__ check instead.
2. "skip if TRUECLOUD_PATCH marker present" prevented a corrected patch block
from replacing a previously-written buggy one without clearing the overlay.
Fixed: always strip any existing TRUECLOUD_PATCH block and rewrite it fresh
using a Python heredoc. Each apply.sh run now self-corrects to the latest
version of the patch.
flan
c8a0c42762