test(repeater): add regression tests for client-repeat forwarding behavior

Introduced tests to verify that the repeater's bridge does not enable client-repeat forwarding in Core's Dispatcher. The tests confirm that the repeater maintains the expected inert behavior regarding client-repeat capabilities and preferences.

tests/test_client_repeat_inert.py

@@ -0,0 +1,47 @@
+"""Regression: the repeater never activates Core's client-repeat forwarding.
+
+Core gained a client-repeat forward path in the shared Dispatcher, gated by a
+flag that only CompanionRadio toggles. The repeater builds the Dispatcher
+directly and uses RepeaterCompanionBridge (a CompanionBridge), so that path
+must stay inert here.
+"""
+
+from openhop_core import LocalIdentity
+from openhop_core.node.dispatcher import Dispatcher
+
+from repeater.companion.bridge import RepeaterCompanionBridge
+
+
+class _Radio:
+    def set_rx_callback(self, cb):
+        pass
+
+
+async def _inject(pkt, wait_for_ack=False):
+    return True
+
+
+def test_repeater_bridge_disallows_client_repeat():
+    bridge = RepeaterCompanionBridge(LocalIdentity(), _inject)
+    # The virtual companion advertises no repeat capability and cannot mutate
+    # the shared radio, so the frame server never persists a nonzero preference.
+    assert bridge.supports_client_repeat() is False
+    assert bridge.supports_radio_params_mutation() is False
+    assert bridge.prefs.client_repeat == 0
+
+
+def test_core_dispatcher_client_repeat_defaults_off():
+    # The repeater constructs Core's Dispatcher directly and never calls
+    # set_client_repeat_enabled(True); forwarding therefore stays disabled.
+    d = Dispatcher(_Radio(), dedupe_enabled=True)
+    assert d._client_repeat_enabled is False
+
+
+def test_repeater_bridge_set_client_repeat_does_not_enable_forwarding():
+    # Even if set_client_repeat is invoked on the bridge, the base persists a
+    # preference only; it never wires a dispatcher forward flag (only
+    # CompanionRadio does). The repeater's Dispatcher stays inert.
+    bridge = RepeaterCompanionBridge(LocalIdentity(), _inject)
+    d = Dispatcher(_Radio(), dedupe_enabled=True)
+    bridge.set_client_repeat(1)
+    assert d._client_repeat_enabled is False