fix(linkedin-search): require a value for --query instead of dropping the keywords (#646)

* fix(linkedin-search): require a value for --query instead of dropping the keywords

parseFlags stores a bare -q as true and -q "" as an empty string, and the
search took --query only when it was a non-empty string. A bare flag, an
empty argument or a blank query therefore returned every posting in the
location with exit 0. Reject a present --query without keywords with
BAD_ARG before any request; omitting the flag stays a location-only search,
matching the Danish portals (#573) and freehire-search (#568).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* changelog: place the #646 entry under [Unreleased]

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Mads Lorentzen <madslorentzen_17@hotmail.com>

.agents/skills/linkedin-search/cli/tests/required-query-value.test.ts

@@ -0,0 +1,42 @@
+import { describe, expect, test } from "bun:test";
+import { runSearchFixture } from "./helpers";
+
+const LOCATION = "Copenhagen, Denmark";
+
+// parseFlags stores a value-less flag as `true` and an empty argument as "",
+// and the search took `--query` only when it was a non-empty string. So a
+// bare `-q`, `-q ""` (an unset shell variable) or a blank query dropped the
+// keywords and returned every posting in the location with exit 0. These run
+// the real CLI against the saved search fixture and count outbound requests.
+describe("--query requires a value", () => {
+  for (const args of [
+    ["-q"],
+    ["-q", "--jobage", "7"],
+    ["--query", ""],
+    ["-q", "   "],
+  ]) {
+    test(`${JSON.stringify(args)} exits 1 with BAD_ARG before any request`, async () => {
+      const { result, requests } = await runSearchFixture(["search", "-l", LOCATION, ...args]);
+      expect(result.exitCode).toBe(1);
+      expect(result.stdout).toBe("");
+      const error = JSON.parse(result.stderr);
+      expect(error.code).toBe("BAD_ARG");
+      expect(error.error).toContain("--query");
+      expect(requests).toHaveLength(0);
+    });
+  }
+
+  test("a query is sent as keywords", async () => {
+    const { result, requests } = await runSearchFixture(["search", "-l", LOCATION, "-q", "data engineer"]);
+    expect(result.exitCode).toBe(0);
+    expect(requests).toHaveLength(1);
+    expect(requests[0].searchParams.get("keywords")).toBe("data engineer");
+  });
+
+  test("omitting --query is still an intentional location-only search", async () => {
+    const { result, requests } = await runSearchFixture(["search", "-l", LOCATION]);
+    expect(result.exitCode).toBe(0);
+    expect(requests).toHaveLength(1);
+    expect(requests[0].searchParams.has("keywords")).toBe(false);
+  });
+});