test(pair-endpoint): update stale pair_spire double + mock get_super_config

The pairing endpoint tests' fake_pair predated the bunker_relay parameter
(views_api passes bunker_relay=data.bunker_relay), so it raised TypeError; and
api_pair_machine later grew a get_super_config() read for the post-pair fee
publish that the doubles never mocked, hitting a DB with no spirekeeper.super_config
table. Both were pre-existing failures on main (masked one behind the other).

Add bunker_relay to the fake_pair signature and mock get_super_config → None
(the happy path doesn't exercise fee publishing). Suite green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/test_pair_endpoint.py

@@ -66,7 +66,9 @@ def _wire(monkeypatch, *, pair="ok"):
     async def fake_owned(machine_id, user_id):
         return _machine()
 
-    async def fake_pair(machine, *, relays, admin_client, duration_hours=None):
+    async def fake_pair(
+        machine, *, relays, admin_client, bunker_relay=None, duration_hours=None
+    ):
         if pair == "error":
             raise PairingError("boom")
         return _result()
@@ -80,11 +82,18 @@ def _wire(monkeypatch, *, pair="ok"):
         state["persisted"] = (machine_id, machine_npub, bunker_spire_key_name)
         return _machine(npub=machine_npub)
 
+    # After pairing, the endpoint reads super_config to publish fee config
+    # (soft-fail tail). None short-circuits it — the happy-path assertions
+    # don't exercise fee publishing, and it keeps the test off the DB.
+    async def fake_super_config():
+        return None
+
     monkeypatch.setattr(views_api, "_machine_owned_by", fake_owned)
     monkeypatch.setattr(views_api, "NsecBunkerAdminClient", _FakeAdmin)
     monkeypatch.setattr(views_api, "pair_spire", fake_pair)
     monkeypatch.setattr(views_api, "_assert_no_pubkey_collision", fake_collision)
     monkeypatch.setattr(views_api, "set_machine_pairing", fake_persist)
+    monkeypatch.setattr(views_api, "get_super_config", fake_super_config)
     return state