Add workspace ID to extension tab data

[technodrome]

When running browser.tabs.query({}), there is no information about containing workspace ID for its tabs. This makes writing extensions to sync tabs basically impossible as one can get tabs per window, but not all tabs per workspace. Also, if you use only one window with several workspaces, this information is lost when running command above.

Current output where workspace ID is missing:

{
  "id": 2,
  "index": 0,
  "windowId": 3,
  "highlighted": false,
  "active": false,
  "attention": false,
  "pinned": false,
  "status": "complete",
  "hidden": false,
  "discarded": true,
  "incognito": false,
  "width": 0,
  "height": 0,
  "lastAccessed": 1739020271316,
  "audible": false,
  "autoDiscardable": true,
  "mutedInfo": {
    "muted": false
  },
  "isArticle": true,
  "isInReaderMode": false,
  "sharingState": {
    "camera": false,
    "microphone": false
  },
  "successorTabId": -1,
  "cookieStoreId": "firefox-default",
  "url": "https://github.com/pvxe/nftables-geoip",
  "title": "pvxe/nftables-geoip: Python script that generates nft maps of ip address blocks and corresponding geolocation. This data is taken from db-ip.com, so yo dont have to worry about accepting any EULA. - github.com/",
  "favIconUrl": "data:image/svg+xml;base64,..."
}

However, I see this info "zenWorkspace": "7e6df...", when running SessionStore.getBrowserState() in the global browser console:

{
  "version": ["sessionrestore", 1],
  "windows": [
    {
      "tabs": [
        {
          "entries": [
            {
              "url": "https://github.com/pvxe/nftables-geoip",
              "title": "pvxe/nftables-geoip: Python script that generates nft maps of ip address blocks and corresponding geolocation. This data is taken from db-ip.com, so yo dont have to worry about accepting any EULA. - github.com/",
              "cacheKey": 0,
              "ID": 123456,
              "docshellUUID": "{...}",
              "originalURI": "https://github.com/pvxe/nftables-geoip",
              "resultPrincipalURI": null,
              "scrollRestorationIsManual": true,
              "hasUserInteraction": true,
              "triggeringPrincipal_base64": "{\"1\":{\"0\":\"moz-extension://...\"}}",
              "docIdentifier": 92,
              "structuredCloneState": "...",
              "structuredCloneVersion": 8,
              "persist": true
            }
          ],
          "lastAccessed": 123456,
          "hidden": false,
          "zenWorkspace": "7e6df...",
          "zenPinnedId": null,
          "zenEssential": null,
          "zenDefaultUserContextId": "true",
          "zenPinnedEntry": null,
          "zenPinnedIcon": null,
          "searchMode": null,
          "userContextId": 0,
          "attributes": {},
          "index": 1,
          "requestedIndex": 0,
          "storage": {
            "https://github.com": {
              "soft-nav:marker": "0",
              "__darkreader__wasEnabledForHost": "true"
            }
          },
          "formdata": {
            "url": "https://github.com/pvxe/nftables-geoip",
            "id": {
              "feedback": ""
            }
          },
          "image": "data:image/svg+xml;base64,..."
        }
      ]
    }
  ]
}

Given that each tab belongs to a workspace, I believe this information should be included in the browser.tabs.query output or there should be public API available to either:

• query workspace ID for array of tabs (or individual tabs)
• list all workspaces IDs (in a window, if workspaces are window's children)
• get all tabs for a workspace ID

Is there a way for extensions to access this information programmatically?

[stevenla]

+1, providing this information to extension developers would allow sync to be implemented on top of bookmarks, solving issues like:

• Open protocol for tab sync #6158
• Essentials sync #6899
• Pinned tabs should be bookmarks #4092
• Zen folders like in arc #3152
• Parity with Arc on Pinned Tab #2829

This way, the browser can continue to take an unopinionated stance on pinned tabs for now. I'm not sure if it's possible for extensions to get the SessionStore.getBrowserState() information right now.