test: add resolveEventInOrg tests for events API coverage

Add 3 tests for resolveEventInOrg from src/lib/api/events.ts (lines 97-122):
- returns resolved event (org, project) on successful 200 response
- returns null for 404 (event not in this org — expected non-error case)
- propagates other errors (500, etc.) as thrown exceptions

Author: BYK

test/lib/api/events.test.ts

@@ -141,3 +141,55 @@ describe("listIssueEvents", () => {
     expect(capturedUrl).toContain("end=");
   });
 });
+
+// ---------------------------------------------------------------------------
+// resolveEventInOrg
+// ---------------------------------------------------------------------------
+
+import { resolveEventInOrg } from "../../../src/lib/api/events.js";
+
+describe("resolveEventInOrg", () => {
+  test("returns resolved event on success", async () => {
+    globalThis.fetch = mockFetch(
+      async () =>
+        new Response(
+          JSON.stringify({
+            organizationSlug: "test-org",
+            projectSlug: "test-project",
+            event: { eventID: "abc123", title: "Error" },
+          }),
+          { status: 200, headers: { "Content-Type": "application/json" } }
+        )
+    );
+
+    const result = await resolveEventInOrg("test-org", "abc123");
+    expect(result).not.toBeNull();
+    expect(result?.org).toBe("test-org");
+    expect(result?.project).toBe("test-project");
+  });
+
+  test("returns null on 404 (event not in this org)", async () => {
+    globalThis.fetch = mockFetch(
+      async () =>
+        new Response(JSON.stringify({ detail: "Not found" }), {
+          status: 404,
+          headers: { "Content-Type": "application/json" },
+        })
+    );
+
+    const result = await resolveEventInOrg("test-org", "nonexistent");
+    expect(result).toBeNull();
+  });
+
+  test("propagates non-404 errors", async () => {
+    globalThis.fetch = mockFetch(
+      async () =>
+        new Response(JSON.stringify({ detail: "Server error" }), {
+          status: 500,
+          headers: { "Content-Type": "application/json" },
+        })
+    );
+
+    await expect(resolveEventInOrg("test-org", "event-id")).rejects.toThrow();
+  });
+});