feat!: remove the deep-research feature

The harness ships browser tools; orchestrating a multi-agent research
workflow on top of them is the agent's job, not this extension's. Drops
the skill, the /deep-research command, and the web-search-researcher
subagent config.

browser_web_search and browser_read_page are untouched — the two tests
that covered their pure parsers move to test/domains/, where the test
glob still picks them up.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/test/domains/serp-parser-test.ts b/test/domains/serp-parser-test.ts
new file mode 100644
index 0000000..433c650
--- /dev/null
+++ b/test/domains/serp-parser-test.ts
@@ -0,0 +1,60 @@
+import { test, describe } from "node:test";
+import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
+import { join } from "node:path";
+import { classifySerp, parseGoogleSerp, type SerpExtraction } from "../../src/domains/search/google-serp";
+
+const fixture = (name: string): SerpExtraction =>
+  JSON.parse(readFileSync(join(import.meta.dirname, "fixtures", name), "utf8")) as SerpExtraction;
+
+const ok = fixture("google-serp-ok.json");
+const captcha = fixture("google-serp-captcha.json");
+const empty = fixture("google-serp-empty.json");
+
+describe("pure Google SERP parser", () => {
+  test("S1: /url?q= redirect is unwrapped to the real target", () => {
+    const results = parseGoogleSerp(ok.anchors, 10);
+    const urls = results.map((r) => r.url);
+    assert.ok(urls.includes("https://real.example/x"));
+  });
+
+  test("S1: google-internal anchors are dropped", () => {
+    const results = parseGoogleSerp(ok.anchors, 10);
+    const urls = results.map((r) => r.url);
+    assert.ok(!urls.some((u) => u.includes("google.com")));
+  });
+
+  test("S1: javascript: anchors are dropped", () => {
+    const results = parseGoogleSerp(ok.anchors, 10);
+    const urls = results.map((r) => r.url);
+    assert.ok(!urls.some((u) => u.startsWith("javascript:")));
+  });
+
+  test("S2: trailing-slash duplicate collapses to one result", () => {
+    const results = parseGoogleSerp(ok.anchors, 10);
+    const realExampleCount = results.filter((r) => r.url.startsWith("https://real.example/x")).length;
+    assert.equal(realExampleCount, 1);
+  });
+
+  test("S2: rank runs 1..n in input order", () => {
+    const results = parseGoogleSerp(ok.anchors, 10);
+    assert.ok(results.every((r, i) => r.rank === i + 1));
+  });
+
+  test("S2: limit truncates and ranks stay 1..limit", () => {
+    const capped = parseGoogleSerp(ok.anchors, 2);
+    assert.ok(capped.length === 2 && capped[capped.length - 1]?.rank === 2);
+  });
+
+  test("S3: populated SERP classifies as ok", () => {
+    assert.equal(classifySerp(ok.pageText, parseGoogleSerp(ok.anchors, 10).length), "ok");
+  });
+
+  test("S3: captcha page classifies as captcha", () => {
+    assert.equal(classifySerp(captcha.pageText, 0), "captcha");
+  });
+
+  test("S3: empty results classify as no_results", () => {
+    assert.equal(classifySerp(empty.pageText, 0), "no_results");
+  });
+});