fix: enforce Claude CLI MCP admission and safe continuation

src/agent/claude-code/reuse-context.ts

@@ -0,0 +1,27 @@
+import type { Api, Message, Model, TranscriptContext } from "@earendil-works/pi-ai";
+import { getCurrentSystemPrompt, getCurrentTools } from "@earendil-works/pi-ai/utils/transcript";
+
+/** Compare model-visible history, not app IDs, timestamps, usage, or Pi's added thinkingLevel. */
+export function conversationForReuse(messages: Message[]): unknown[] {
+	return messages.flatMap((message): unknown[] => {
+		switch (message.role) {
+			case "system": return [];
+			case "user": return [{ role: message.role, content: message.content }];
+			case "assistant": return [{ role: message.role, content: message.content }];
+			case "toolResult": return [{
+				role: message.role,
+				toolCallId: message.toolCallId,
+				toolName: message.toolName,
+				content: message.content,
+				isError: message.isError,
+			}];
+		}
+	});
+}
+
+export function configurationForReuse(model: Model<Api>, context: TranscriptContext, effort: string): unknown {
+	const systemPrompt = getCurrentSystemPrompt(context.messages);
+	const tools = getCurrentTools(context.messages);
+	// The wire is JSON: TypeBox's schema symbols are not CLI configuration.
+	return JSON.parse(JSON.stringify({ model, effort, systemPrompt, tools })) as unknown;
+}