Use rsync as default sync, mutagen optional via --mutagen flag

[Copilot]

Changes the sync behavior: rsync is now default for one-time syncs, mutagen available via --mutagen for continuous bi-directional sync. Adds --terminate-all to cleanup mutagen sessions. Ensures mutagen sessions terminate when dts devel run stops.

Changes

• New utils/rsync_sync.py: Rsync-over-SSH implementation with ignore patterns and proper error handling

• dts devel sync behavior:

  • Default: one-time rsync sync
  • --mutagen: continuous mutagen sync with session management
  • --terminate-all: terminates all mutagen sessions (mutagen sync terminate -a)
  • Mutagen-only flags (--monitor, --flush-direction) warn if used without --mutagen

• dts devel run integration:

  • Added --mutagen flag, propagates to sync command
  • Cleanup logic terminates mutagen sessions on container exit (except detached mode)
  • Only tracks sessions when --mutagen used

• SSH key isolation: Existing IdentitiesOnly yes config prevents key conflicts for both rsync and mutagen

Usage

# Default: rsync one-time sync
dts devel sync -H myrobot.local
dts devel run -H myrobot.local -s

# Continuous mutagen sync
dts devel sync -H myrobot.local --mutagen
dts devel run -H myrobot.local -s --mutagen

# Cleanup mutagen sessions
dts devel sync --terminate-all

Trade-offs

	Rsync (default)	Mutagen (--mutagen)
Sync type	One-time	Continuous
Direction	One-way	Bi-directional
Setup	None	Daemon required
Speed	Fast	Moderate setup, then realtime

Original prompt

Add a --mutagen flag to the dts devel sync command

Fix ssh keys conflict (explicitly use the installed duckiebot-specific ssh keys) when using mutagen and docker in dts devel sync and dts devel run commands. If necessary you can specify this in the ssh config file we install.

Make sure to close the mutagen sessions when the dts devel run command is stopped.

Add a --terminate-all flag to the sync command to force-terminate all mutagen sync sessions (mutagen sync terminate -a)

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[Tuxliri]

@copilot I actually want you to use the rsync synchronization method that is used on the ente branch of this repository as the default synchronization method. Only use mutagen if the --mutagen flag is passed to dts devel sync or dts devel run

[Copilot]

@copilot I actually want you to use the rsync synchronization method that is used on the ente branch of this repository as the default synchronization method. Only use mutagen if the --mutagen...

I've checked the ente branch and it only contains the mutagen-based sync implementation (same as the base commit 5904383). I don't see any rsync implementation there. Could you clarify:

1. Is there a different branch with the rsync implementation you want me to use?
2. Or should I use the rsync implementation I created in utils/rsync_sync.py but make sure it's the default?

Currently my implementation already makes rsync the default (without --mutagen flag) and mutagen optional (with --mutagen flag). Please let me know what specifically needs to be changed.