Web UI: strip relevant-memories scaffolding

ui/src/ui/chat/message-extract.test.ts

@@ -23,6 +23,25 @@ describe("extractTextCached", () => {
     expect(extractTextCached(message)).toBe("plain text");
     expect(extractTextCached(message)).toBe("plain text");
   });
+
+  it("strips assistant relevant-memories scaffolding", () => {
+    const message = {
+      role: "assistant",
+      content: [
+        {
+          type: "text",
+          text: [
+            "<relevant-memories>",
+            "Internal memory context",
+            "</relevant-memories>",
+            "Final user answer",
+          ].join("\n"),
+        },
+      ],
+    };
+    expect(extractText(message)).toBe("Final user answer");
+    expect(extractTextCached(message)).toBe("Final user answer");
+  });
 });
 
 describe("extractThinkingCached", () => {

ui/src/ui/format.test.ts

@@ -68,4 +68,34 @@ describe("stripThinkingTags", () => {
     expect(stripThinkingTags("<final\nHello")).toBe("<final\nHello");
     expect(stripThinkingTags("Hello</final>")).toBe("Hello");
   });
+
+  it("strips <relevant-memories> blocks", () => {
+    const input = [
+      "<relevant-memories>",
+      "The following memories may be relevant to this conversation:",
+      "- Internal memory note",
+      "</relevant-memories>",
+      "",
+      "User-visible answer",
+    ].join("\n");
+    expect(stripThinkingTags(input)).toBe("User-visible answer");
+  });
+
+  it("keeps relevant-memories tags in fenced code blocks", () => {
+    const input = [
+      "```xml",
+      "<relevant-memories>",
+      "sample",
+      "</relevant-memories>",
+      "```",
+      "",
+      "Visible text",
+    ].join("\n");
+    expect(stripThinkingTags(input)).toBe(input);
+  });
+
+  it("hides unfinished <relevant-memories> block tails", () => {
+    const input = ["Hello", "<relevant-memories>", "internal-only"].join("\n");
+    expect(stripThinkingTags(input)).toBe("Hello\n");
+  });
 });

ui/src/ui/format.ts

@@ -1,6 +1,6 @@
 import { formatDurationHuman } from "../../../src/infra/format-time/format-duration.ts";
 import { formatRelativeTimestamp } from "../../../src/infra/format-time/format-relative.ts";
-import { stripReasoningTagsFromText } from "../../../src/shared/text/reasoning-tags.js";
+import { stripAssistantInternalScaffolding } from "../../../src/shared/text/assistant-visible-text.js";
 
 export { formatRelativeTimestamp, formatDurationHuman };
 
@@ -56,5 +56,5 @@ export function parseList(input: string): string[] {
 }
 
 export function stripThinkingTags(value: string): string {
-  return stripReasoningTagsFromText(value, { mode: "preserve", trim: "start" });
+  return stripAssistantInternalScaffolding(value);
 }