dashboard-v2 frontend: node column + clickable pills on storage tabs

All storage rows now carry a 'node' field from the aggregator.
Adds a small green-pill component that renders the source node
name; click drills into that node's detail page.

Also fixes the TS interfaces to match the new backend shape
(node field added to Blob/Tag/Ref/Snapshot/RefTracking types).

dashboard-v2/src/pages/StorageBrowser.tsx

@@ -37,8 +37,9 @@ function BlobsList() {
     <>
       {err && <ErrorBox msg={err} />}
       <Table
-        headers={['blob-id', 'size', 'chunks']}
+        headers={['node', 'blob-id', 'size', 'chunks']}
         rows={rows.map((r) => [
+          <NodePill key="n" node={r.node} />,
           <span key="hex" className="font-mono text-xs">
             {r.blob_id_hex.slice(0, 24)}…
           </span>,
@@ -68,8 +69,9 @@ function TagsList() {
       />
       {err && <ErrorBox msg={err} />}
       <Table
-        headers={['key', 'blob-id']}
+        headers={['node', 'key', 'blob-id']}
         rows={rows.map((r) => [
+          <NodePill key="n" node={r.node} />,
           <span key="k" className="font-mono text-sm">
             {r.key}
           </span>,
@@ -93,8 +95,9 @@ function RefsList() {
     <>
       {err && <ErrorBox msg={err} />}
       <Table
-        headers={['fingerprint', 'blob-id']}
+        headers={['node', 'fingerprint', 'blob-id']}
         rows={rows.map((r) => [
+          <NodePill key="n" node={r.node} />,
           <span key="fp" className="font-mono text-xs">
             {r.fingerprint_hex.slice(0, 24)}…
           </span>,
@@ -118,8 +121,9 @@ function SnapshotsList() {
     <>
       {err && <ErrorBox msg={err} />}
       <Table
-        headers={['name', 'created', 'blobs', 'json size']}
+        headers={['node', 'name', 'created', 'blobs', 'json size']}
         rows={rows.map((r) => [
+          <NodePill key="node" node={r.node} />,
           <span key="n" className="font-mono text-sm">
             {r.name}
           </span>,
@@ -190,3 +194,16 @@ function ErrorBox({ msg }: { msg: string }) {
     </div>
   );
 }
+
+/// Small pill badge for the originating node — clickable to
+/// drill into that node's detail page.
+function NodePill({ node }: { node: string }) {
+  return (
+    <a
+      href={`#/nodes/${node}`}
+      className="inline-block rounded bg-slate-800 text-emerald-300 text-xs font-mono px-2 py-0.5 hover:bg-slate-700"
+    >
+      {node}
+    </a>
+  );
+}