fix: preserve interaction replies across chat recovery

.opencode/host-question-policy.ts

@@ -0,0 +1,35 @@
+import type { Plugin } from "@opencode/plugin";
+import { getInternalBridgeConfig } from "./internalBridge.js";
+
+export async function hostQuestionBridge(operation: string, body: Record<string, unknown>, signal?: AbortSignal): Promise<unknown> {
+  const { baseUrl, internalToken } = getInternalBridgeConfig();
+  const response = await fetch(`${baseUrl}/internal/chat-interactions/${operation}`, {
+    method: "POST", headers: { "content-type": "application/json", "x-agent-internal-token": internalToken },
+    body: JSON.stringify(body), signal: signal ? AbortSignal.any([signal, AbortSignal.timeout(10000)]) : AbortSignal.timeout(10000),
+  });
+  if (!response.ok) throw new Error("Interaction gate rejected the operation. Finish existing tools before asking, then wait for the user.");
+  return response.json();
+}
+
+export async function registerHostQuestionPolicy(ctx: Parameters<Plugin.Plugin["setup"]>[0]) {
+  await ctx.session.hook("context", async (event) => {
+    const policy = await hostQuestionBridge("policy", { session_id: event.sessionID }) as { enabled: boolean; waiting: boolean };
+    if (!policy.enabled) delete event.tools.ask_user;
+    else {
+      delete event.tools.question;
+      if (policy.waiting) for (const name of Object.keys(event.tools)) delete event.tools[name];
+    }
+  });
+  // Wrap native, MCP and custom executors, including calls via Code Mode.
+  await ctx.tool.transform((editor) => {
+    for (const definition of editor.list()) editor.update(definition.id, (draft) => {
+      const execute = draft.execute;
+      draft.execute = async (input, context) => {
+        const identity = { session_id: context.sessionID, call_id: context.id, tool: definition.id };
+        await hostQuestionBridge("enter", identity, context.signal);
+        try { return await execute(input, context); }
+        finally { await hostQuestionBridge("leave", identity).catch(() => undefined); }
+      };
+    });
+  });
+}