Add regression for constructor llm getter traps

Co-authored-by: Shri Sukhani <shrisukhani@users.noreply.github.com>

Author: cursoragent

currentState.md

@@ -139,6 +139,7 @@ HyperAgent exposes a TypeScript SDK for browser automation with three primary pa
 - Expanded cached-action helper regression coverage to validate trap-safe option access (`cdpActions`, `filterAdTrackingFrames`, `maxSteps`) with deterministic fallback to agent/default settings.
 - Hardened constructor-wide config ingestion (LLM/provider/debug/options/custom-actions/local/hyper configs) with trap-safe reads and sane defaults so malformed/trap-prone config objects no longer crash initialization.
 - Hardened open-tab prompt materialization with trap-safe tab-array reads so unreadable tab entries are skipped and summarized instead of collapsing to unavailable output.
+- Added constructor regression coverage for trap-prone `llm` config getters, ensuring fallback failure paths stay deterministic and readable.
 - Expanded top-level package exports for key workflow/config types at `@hyperbrowser/agent`.
 - Removed stale script entry (`build-dom-tree-script`) and improved README usage docs.
 - Added canonical single-action debug writer helper (`writePerformDebug`) while preserving deprecated alias compatibility.

src/agent/__tests__/hyperagent-constructor.test.ts

@@ -106,6 +106,34 @@ describe("HyperAgent constructor and task controls", () => {
     expect(getDebugOptions().enabled).toBe(false);
   });
 
+  it("throws readable missing-provider error when llm getter traps", () => {
+    const previousKey = process.env.OPENAI_API_KEY;
+    delete process.env.OPENAI_API_KEY;
+    try {
+      const trappedConfig = new Proxy(
+        {},
+        {
+          get: (_target, prop: string | symbol) => {
+            if (prop === "llm") {
+              throw new Error("llm getter trap");
+            }
+            return undefined;
+          },
+        }
+      ) as unknown as ConstructorParameters<typeof HyperAgent>[0];
+
+      expect(() => new HyperAgent(trappedConfig)).toThrow(
+        "No LLM provider provided"
+      );
+    } finally {
+      if (typeof previousKey === "undefined") {
+        delete process.env.OPENAI_API_KEY;
+      } else {
+        process.env.OPENAI_API_KEY = previousKey;
+      }
+    }
+  });
+
   it("throws synchronously for reserved custom action names", () => {
     const reservedAction: AgentActionDefinition = {
       type: "complete",