Workspaces sync [2.0]

[kristijanribaric]

A new sync implementation built on top of Firefox's existing Sync infrastructure, enabling cross-device synchronization of workspaces, containers, pinned tabs, and folders, reworked from the ground up.

What syncs

• Workspaces: name, icon, theme, assigned container
• Containers: identity, color, icon
• Pinned tabs & essentials & regular tabs: URL, title, icon, workspace/folder assignment
• Folders : label, icon, position, workspace assignment

Changes

• New sync engine : added ZenWorkspacesStore, ZenWorkspacesTracker, and ZenWorkspacesEngine to manage tracking and storing workspace changes across devices
• Session merge logic : modified ZenSessionManager to properly merge incoming remote data with the local session
• Container ID sync : patched ContextualIdentityService.sys.mjs to allow creating containers with an explicit ID, ensuring pinned tabs and workspaces reference the correct container across devices
• Engine registration: patched service.sys.mjs to register the new workspace sync engine

While overall sync works, it needs further testing and refinement, thx

[mr-cheffy]

Maybe it should be moved to its own "../sync" directory?

[azizkoumenji]

Can you also add sync support for Zen Mods if possible?

[kristijanribaric]

Can you also add sync support for Zen Mods if possible?

Not in scope of this PR.
Once workspace sync is all done and stable, we can start implementing separate sync mechanism for mods.

[azizkoumenji]

Will unpinned tabs be synced in the future?

[mr-cheffy]

They should be with this PR

[MaximilianZenz]

that there are now two competing PRs of the same feature shows pretty clear how important this feature is. i hope this will get merged soon. Have you looked at the code from the other guy? maybe he has some solutions for the issue you still have. syncing only on restart seems kinda weird as many people (at least the ones i know) never restart their browsers ever.

[mr-cheffy]

We want it to be live syncing, so don't worry about that, this is just a POC. There are some main blockers though because we are not sure how the merging mechanism should work. Should it completely override? Merge both sessions? ...

[mirai-toto]

We want it to be live syncing, so don't worry about that, this is just a POC. There are some main blockers though because we are not sure how the merging mechanism should work. Should it completely override? Merge both sessions? ...

My two cents: just prompt the user when there's a conflict, like Steam does

[SilverEzhik]

We want it to be live syncing, so don't worry about that, this is just a POC. There are some main blockers though because we are not sure how the merging mechanism should work. Should it completely override? Merge both sessions? ...

I would love for it to be treated as just one session - as if all Zen windows on all of my computers belong to the same browser profile, have the same tabs, etc.

I imagine sync can get very complex, though. Perhaps failures would be more forgiving if there was a way to easily recover - if some other device closed 100 tabs, there should be a way to recover them with a shortcut like Cmd+Shift+T.

[UnnaturalTwilight]

On the matter of unpinned tabs, please have that be a separatly configurable sync item from workspaces & pined tabs if it is reasonable to implement as such.

I personally wouldn't want my unpinned tabs syncing automatically since my primary use for sync is between windows and Linux on the same device. I tend to have very different sets of tabs between the two and would just end up closing all the synced tabs anyways. For the few cases where I want an unpinned tabs to move between them I would just use the send to device feature like I currently do.

If they aren't separate it isn't a deal breaker for me but I would appreciate not having the extra overhead if I can avoid it.

[mr-cheffy]

Please mark it as ready for review once its done! There seems to be git conflicts as well?