Bill a turn to the node that asked, not the node that generated

Every turn runs on the AI owner now, so the ledger's per-host column had
collapsed to a single name and the fleet breakdown said nothing. The asking
node travels with the request and is validated before it is written, which
also retires ai_token_sync.sh — a partner ledger is empty by construction.

Plugin/unraid/include/ai_actions.php

@@ -525,7 +525,11 @@ function vv_ai_dispatch(string $action, array $p, bool $isPost, int &$httpStatus
              . escapeshellarg($scope) . ' '
              // Asked for per turn. Only meaningful on a profile holding web_search — the worker
              // checks that, so a crafted web=1 against any other profile changes nothing.
-             . escapeshellarg(($p['web'] ?? '') === '1' ? '1' : '0')
+             . escapeshellarg(($p['web'] ?? '') === '1' ? '1' : '0') . ' '
+             // Who asked. Set by the RPC layer for a forwarded turn and absent for a local one,
+             // where the worker's own default is already correct. This is what keeps the token
+             // ledger's per-host column meaningful once every turn generates on the owner.
+             . escapeshellarg((string)($p['_vv_node'] ?? ''))
              . ' >/dev/null 2>&1 </dev/null &';
         $out = []; $rc = 0;
         exec($cmd, $out, $rc);