fix(jobnet-search): filter search by the ESCO occupation that occupations prints (#649)

* fix(jobnet-search): filter search by the ESCO occupation that occupations prints

SKILL.md and the CLI README told users to pass the conceptUriDa UUID
from `occupations` to `search --occupation-area` / `--occupation-group`.
Those flags take the numeric area and group codes (10000, 10060), so a
UUID there returned a successful search with zero ads. The API filters
one occupation through its `occupations` parameter, which returns the
830 nurse ads for the sygeplejerske UUID.

Add `search --occupation`, sent as `occupations`, accepting the full
conceptUriDa or its trailing UUID, and point the docs at it.

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

* changelog: place the #649 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/jobnet-search/cli/tests/occupation-filter-cli.test.ts

@@ -0,0 +1,76 @@
+import { expect, test } from "bun:test";
+import { mkdtempSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { buildSearchParams, occupationId } from "../src/commands/search";
+
+// The identifier `occupations` documents and prints, copied unchanged.
+async function documentedConceptUri(): Promise<string> {
+  const readme = (await Bun.file(join(import.meta.dir, "../README.md")).text()).replace(/\r\n/g, "\n");
+  const section = readme.split("## `occupations`")[1].split("\n---")[0];
+  return JSON.parse(section.match(/```json\n([\s\S]*?)```/)![1])[0].conceptUriDa;
+}
+
+async function searchRequest(args: string[]) {
+  const requests: URL[] = [];
+  const server = Bun.serve({
+    hostname: "127.0.0.1",
+    port: 0,
+    fetch(request) {
+      requests.push(new URL(request.url));
+      return Response.json({ jobAds: [], searchFacets: {}, totalJobAdCount: 0, searchString: null });
+    },
+  });
+  const dir = mkdtempSync(join(tmpdir(), "jobnet-occupation-filter-"));
+  const preload = join(dir, "fetch.ts");
+  writeFileSync(preload, `
+    const originalFetch = globalThis.fetch;
+    globalThis.fetch = (input, init) => {
+      const url = new URL(input instanceof Request ? input.url : String(input));
+      if (url.protocol === "data:") return originalFetch(input, init);
+      if (url.origin !== "https://jobnet.dk" || url.pathname !== "/bff/FindJob/Search") {
+        throw new Error("Unexpected search fixture request");
+      }
+      return originalFetch(${JSON.stringify(server.url.origin)} + url.pathname + url.search, init);
+    };
+  `);
+  try {
+    const proc = Bun.spawn([
+      process.execPath, "run", "--preload", preload,
+      join(import.meta.dir, "../src/cli.ts"), "search", ...args,
+    ], { stdout: "pipe", stderr: "pipe" });
+    const [stderr, exitCode] = await Promise.all([new Response(proc.stderr).text(), proc.exited]);
+    expect(stderr).toBe("");
+    expect(exitCode).toBe(0);
+    expect(requests).toHaveLength(1);
+    return requests[0].searchParams;
+  } finally {
+    server.stop(true);
+    rmSync(dir, { recursive: true, force: true });
+  }
+}
+
+test("search --occupation sends the conceptUriDa printed by occupations as the occupations filter", async () => {
+  const uri = await documentedConceptUri();
+  const uuid = uri.split("/").at(-1)!;
+  const params = await searchRequest(["--occupation", uri]);
+  expect(params.get("occupations")).toBe(uuid);
+  // Never the area/group filters, which take numeric codes and match no ad for a UUID.
+  expect(params.get("occupationAreas")).toBeNull();
+  expect(params.get("occupationGroups")).toBeNull();
+});
+
+test("search --occupation accepts the bare UUID", async () => {
+  const uuid = (await documentedConceptUri()).split("/").at(-1)!;
+  expect((await searchRequest(["--occupation", uuid])).get("occupations")).toBe(uuid);
+});
+
+test("occupationId keeps a UUID and takes the last segment of a URI", () => {
+  const uuid = "56f5d45c-ce48-43ac-9720-34831a1c8302";
+  expect(occupationId(uuid)).toBe(uuid);
+  expect(occupationId(`http://data.star.dk/esco/occupation/${uuid}`)).toBe(uuid);
+  expect(occupationId(` http://data.star.dk/esco/occupation/${uuid}/ `)).toBe(uuid);
+  expect(
+    buildSearchParams({ page: 1, "per-page": 10, order: "PublicationDate", radius: 50, occupation: uuid }).occupations,
+  ).toBe(uuid);
+});