feat(core): chunks retry-banner, wire conformance, ws logic, history adapter

- core/chunks: add retry-banner view-model (+test), update reducer/selectors/types
- core/wire: update conformance checks (+test)
- adapters/ws: update reconnect logic (+tests)
- adapters/history: new client-side routing adapter (history + popstate wrapper)

1 files changed, 2 insertions, 0 deletions

diff --git a/src/core/wire/conformance.ts b/src/core/wire/conformance.ts
index 07808fc..7da4794 100644
--- a/src/core/wire/conformance.ts
+++ b/src/core/wire/conformance.ts
@@ -36,6 +36,8 @@ export function assertAgentEventExhaustive(event: AgentEvent): string {
 			return "step-complete";
 		case "steering":
 			return "steering";
+		case "provider-retry":
+			return "provider-retry";
 		default:
 			return event satisfies never;
 	}