[bojemoi] fix(borodino/uzi): handler conflict + SFTP ETXTBSY + jobs.list AttributeError

Commit `3beac66`

Fix port 4444 conflict: check existing jobs before starting multi/handler (teamserver already runs handler via start_msf_server.sh — uzi must not start a second) jobs.list values are str not dict — handle both types in isinstance check
Fix C2 SFTP ETXTBSY: rm -f remote_bin via SSH before sftp.put() (prevents “text file busy” when overwriting a running payload binary)

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