dsh-remote 0.6.0: other machines' workspaces in the Workspaces list, richer Devices tab

- sidebar: workspaces (+ sessions) of every other device appear inside the stock
  Workspaces list with a server icon and the device name; click folds sessions,
  hover + creates a session there, a session opens as the remote conversation view
  (/r/<device>/#/session/<id>); the viewed device's own rows stay native
- Devices tab: every device with its state (online/offline, last seen, platform,
  workspace/session/running counts), offline and revoked devices included
- deploy/e2e-dom.mjs, e2e-eval.mjs: DOM dump / evaluate-in-page helpers

README.md

@@ -75,9 +75,8 @@ The slave gets its own device key; the master stores only its hash. **Revoke** c
 
 ## Use it
 
-- **Sidebar → Devices:** every device, its sessions grouped by workspace, a running indicator, search. Click a session to open it. A local session opens in place. A remote one opens `/r/<device>/#/session/<id>`, the full UI of that device, with a "Remote: <device> · back to local" pill in the corner.
-- **+ New session** on a device card creates a session in one of that device's workspaces and opens it.
-- **Open DSH ↗** opens a device's whole UI.
+- **Workspaces list:** the workspaces of every *other* machine appear in the stock Workspaces list, below your own, with a **server icon** instead of the folder icon and the device name on the right. Click one to fold its sessions open (newest first, "Show N more" for the rest); hover for **+** to start a session in that workspace on that device. Clicking a remote session opens it as the usual conversation view, served by that device at `/r/<device>/#/session/<id>`. A "Remote: <device> · back to local" pill marks the remote view. While you are viewing a device, its own workspaces are the native rows and are not repeated.
+- **Sidebar → Devices:** every device with its state (online / offline, last seen, platform, counts of workspaces, sessions and running ones), then its workspaces and sessions. The same server icon marks other machines' workspaces. **Open DSH ↗** opens a device's whole UI, **+ New session** creates a session in one of its workspaces.
 - **Toasts:** "<device>: '<title>' finished", with an *Open* action.
 
 ## Agent tools: the master's AI drives the slaves