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, 10 insertions, 1 deletions

diff --git a/src/core/chunks/selectors.ts b/src/core/chunks/selectors.ts
index 6929de2..3d91559 100644
--- a/src/core/chunks/selectors.ts
+++ b/src/core/chunks/selectors.ts
@@ -1,4 +1,4 @@
-import type { ChatMessage, Chunk } from "@dispatch/wire";
+import type { ChatMessage, Chunk, TurnProviderRetryEvent } from "@dispatch/wire";
 import type { RenderedChunk, TranscriptState } from "./types";
 
 /**
@@ -33,6 +33,15 @@ export function selectGenerating(state: TranscriptState): boolean {
 }
 
 /**
+ * The latest `provider-retry` event for the current turn, or `null` when no retry
+ * is pending. Drives the transient yellow "retrying…" warning banner (rendered
+ * by ChatView). Never persisted — see `TranscriptState.providerRetry`.
+ */
+export function selectProviderRetry(state: TranscriptState): TurnProviderRetryEvent | null {
+	return state.providerRetry;
+}
+
+/**
  * Group consecutive same-role rendered chunks into ChatMessages.
  */
 export function selectMessages(state: TranscriptState): readonly ChatMessage[] {