fix: CI failures — remove phantom A2AProtocol import, fix asyncio event loop in tests

- Remove non-existent A2AProtocol from runtime/a2a/__init__.py import
  (fixes pdoc API docs build)
- Replace deprecated asyncio.get_event_loop().run_until_complete() with
  asyncio.run() in test fixtures (fixes Python 3.10+ compatibility)

Author: Neo

runtime/a2a/__init__.py

@@ -5,12 +5,11 @@
 and purchase services from other agents.
 """
 
-from runtime.a2a.protocol import A2AProtocol, ServiceListing, JobRequest, JobResult
+from runtime.a2a.protocol import ServiceListing, JobRequest, JobResult
 from runtime.a2a.marketplace import A2AMarketplace
 from runtime.a2a.coordinator import A2ACoordinator
 
 __all__ = [
-    "A2AProtocol",
     "A2AMarketplace",
     "A2ACoordinator",
     "ServiceListing",

tests/test_badges.py

@@ -48,7 +48,7 @@ def fake_db():
 def badge_manager(fake_db):
     """Provide an initialised BadgeManager."""
     mgr = BadgeManager(fake_db)
-    asyncio.get_event_loop().run_until_complete(mgr.initialize())
+    asyncio.run(mgr.initialize())
     return mgr
 
 

tests/test_referrals.py

@@ -59,7 +59,7 @@ def fake_db():
 def manager(fake_db):
     """Provide an initialised ReferralManager."""
     mgr = ReferralManager(fake_db)
-    asyncio.get_event_loop().run_until_complete(mgr.initialize())
+    asyncio.run(mgr.initialize())
     return mgr
 
 

tests/test_subscriptions.py

@@ -57,7 +57,7 @@ def fake_db():
 def usage_tracker(fake_db):
     """Provide an initialised UsageTracker."""
     tracker = UsageTracker(fake_db)
-    asyncio.get_event_loop().run_until_complete(tracker.initialize())
+    asyncio.run(tracker.initialize())
     return tracker
 
 
@@ -71,7 +71,7 @@ def feature_gate(fake_db, usage_tracker):
 def sub_store(fake_db):
     """Provide an initialised SubscriptionStore."""
     store = SubscriptionStore(fake_db)
-    asyncio.get_event_loop().run_until_complete(store.initialize())
+    asyncio.run(store.initialize())
     return store