fix(client): say when the account's node is elsewhere, and let go of it

Signing in on a desktop links this machine's node to the account, but never
over a key already linked (that would cut off the user's other machine) nor a
node set up for another account. On a real install both left the node reading
"Running" while the hub refused it in a loop, and nothing said why. And the
only way to unlink was the linked machine's own Node page, of no use once
that machine is gone.

- The Node page works out, from the node and the hub each time it looks,
  whether this node can serve the signed-in account (nodeLinkProblem), and
  says why not: "Link this node instead" (asked first) puts this node's key
  on the account; "Use this node for my account" switches a node set up for
  another account through node:start, which takeOver now lets past a node
  that answers "running". The first version went through node:start for
  both, and clicking it on a real install did nothing: a node signed in
  before the account was linked elsewhere answers "running".
- The Profile page unlinks the account's node (DELETE /v1/users/me/node_key),
  from any machine.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js
index f5b3808..6f3be87 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js
@@ -530,6 +530,9 @@ export default {
   'settings.node_key_placeholder': 'Paste node Ed25519 public key (base64)',
   'settings.node_key_submit': 'Link Node',
   'settings.node_key_success': 'Node linked successfully',
+  'settings.node_key_unlink': "Unlink",
+  'settings.node_key_unlink_confirm': "Unlink the node from your account? It stops serving your groups until a node is linked again.",
+  'settings.node_key_unlinked': "Node unlinked",
   'settings.node_key_current': 'Linked node key',
 
   // Sidebar
@@ -1093,6 +1096,12 @@ export default {
   'node.pair_button': 'Pair this browser',
   'node.pair_success': 'Paired successfully.',
   'node.pair_pending': "Pairing code ready: it is used the next time you open one of this node's groups.",
+  'node.link_other_node': "Your account is linked to the node of another machine, so this node cannot serve your groups.",
+  'node.link_here': "Link this node instead",
+  'node.link_here_confirm': "Link this node to your account? The node linked now, on another machine, stops serving your groups until it is linked again.",
+  'node.link_other_account': "This node is set up for {account}, not for you, so it cannot serve your groups.",
+  'node.link_take_over': "Use this node for my account",
+  'node.link_linking': "Linking…",
   'node.reload': 'Reload config',
   'node.reloaded': 'Config reloaded. Root changes on existing groups are now active.',
   'node.attach_group': 'Add group',