fix: guard invalid avatar bootstrap text

src/gateway/assistant-identity.test.ts

@@ -0,0 +1,42 @@
+import { describe, expect, it } from "vitest";
+
+import type { ClawdbotConfig } from "../config/config.js";
+import { DEFAULT_ASSISTANT_IDENTITY, resolveAssistantIdentity } from "./assistant-identity.js";
+
+describe("resolveAssistantIdentity avatar normalization", () => {
+  it("drops sentence-like avatar placeholders", () => {
+    const cfg: ClawdbotConfig = {
+      ui: {
+        assistant: {
+          avatar: "workspace-relative path, http(s) URL, or data URI",
+        },
+      },
+    };
+
+    expect(resolveAssistantIdentity({ cfg }).avatar).toBe(DEFAULT_ASSISTANT_IDENTITY.avatar);
+  });
+
+  it("keeps short text avatars", () => {
+    const cfg: ClawdbotConfig = {
+      ui: {
+        assistant: {
+          avatar: "PS",
+        },
+      },
+    };
+
+    expect(resolveAssistantIdentity({ cfg }).avatar).toBe("PS");
+  });
+
+  it("keeps path avatars", () => {
+    const cfg: ClawdbotConfig = {
+      ui: {
+        assistant: {
+          avatar: "avatars/clawd.png",
+        },
+      },
+    };
+
+    expect(resolveAssistantIdentity({ cfg }).avatar).toBe("avatars/clawd.png");
+  });
+});