feat(llm-security-copilot): port llm-security v5.1.0 to GitHub Copilot CLI

Full port of llm-security plugin for internal use on Windows with GitHub
Copilot CLI. Protocol translation layer (copilot-hook-runner.mjs)
normalizes Copilot camelCase I/O to Claude Code snake_case format — all
original hook scripts run unmodified.

- 8 hooks with protocol translation (stdin/stdout/exit code)
- 18 SKILL.md skills (Agent Skills Open Standard)
- 6 .agent.md agent definitions
- 20 scanners + 14 scanner lib modules (unchanged)
- 14 knowledge files (unchanged)
- 39 test files including copilot-port-verify.mjs (17 tests)
- Windows-ready: node:path, os.tmpdir(), process.execPath, no bash

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/llm-security-copilot/tests/scanners/network.test.mjs

@@ -0,0 +1,137 @@
+// network.test.mjs — Integration tests for the network-mapper
+// Tests against the evil-project-health fixture which contains URLs to:
+//   - ngrok-free.app (SUSPICIOUS_DOMAINS — HIGH)
+//   - webhook.site   (SUSPICIOUS_DOMAINS — HIGH)
+//   - requestbin.com (SUSPICIOUS_DOMAINS — HIGH)
+//   - pipedream.net  (SUSPICIOUS_DOMAINS — HIGH)
+//   - pastebin.com   (SUSPICIOUS_DOMAINS — HIGH)
+//   - bit.ly         (SUSPICIOUS_DOMAINS — HIGH, URL shortener)
+//   - 192.168.x.x    (private IP — MEDIUM)
+//   - 45.33.32.156   (public IP — HIGH, bypasses DNS)
+//
+// We do NOT assert on DNS resolution — it is network-dependent.
+// Only URL pattern detection (Phase 1–2 of the scanner) is tested.
+
+import { describe, it, beforeEach } from 'node:test';
+import assert from 'node:assert/strict';
+import { resolve } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { resetCounter } from '../../scanners/lib/output.mjs';
+import { discoverFiles } from '../../scanners/lib/file-discovery.mjs';
+import { scan } from '../../scanners/network-mapper.mjs';
+
+const __dirname = fileURLToPath(new URL('.', import.meta.url));
+const FIXTURE = resolve(__dirname, '../../examples/malicious-skill-demo/evil-project-health');
+
+describe('network-mapper integration', () => {
+  let discovery;
+
+  beforeEach(async () => {
+    resetCounter();
+    discovery = await discoverFiles(FIXTURE);
+  });
+
+  it('returns status ok', async () => {
+    const result = await scan(FIXTURE, discovery);
+    assert.equal(result.status, 'ok', `Expected status 'ok', got '${result.status}'`);
+  });
+
+  it('scans at least one file', async () => {
+    const result = await scan(FIXTURE, discovery);
+    assert.ok(result.files_scanned >= 1, `Expected files_scanned >= 1, got ${result.files_scanned}`);
+  });
+
+  it('detects at least 2 suspicious domain findings', async () => {
+    const result = await scan(FIXTURE, discovery);
+    const suspiciousFindings = result.findings.filter(f => f.severity === 'high');
+    assert.ok(
+      suspiciousFindings.length >= 2,
+      `Expected >= 2 HIGH severity network findings, got ${suspiciousFindings.length}. ` +
+      `All findings: ${result.findings.map(f => `${f.severity}: ${f.title}`).join('; ')}`
+    );
+  });
+
+  it('reports total findings >= 2', async () => {
+    const result = await scan(FIXTURE, discovery);
+    assert.ok(
+      result.findings.length >= 2,
+      `Expected >= 2 network findings, got ${result.findings.length}`
+    );
+  });
+
+  it('detects ngrok-free.app as suspicious endpoint', async () => {
+    const result = await scan(FIXTURE, discovery);
+    const ngrokFinding = result.findings.find(
+      f => f.title.toLowerCase().includes('ngrok') ||
+           (f.evidence && f.evidence.toLowerCase().includes('ngrok'))
+    );
+    assert.ok(
+      ngrokFinding,
+      `Should detect ngrok-free.app. All titles: ${result.findings.map(f => f.title).join('; ')}`
+    );
+  });
+
+  it('detects webhook.site as suspicious endpoint', async () => {
+    const result = await scan(FIXTURE, discovery);
+    const webhookFinding = result.findings.find(
+      f => f.title.toLowerCase().includes('webhook.site') ||
+           (f.evidence && f.evidence.toLowerCase().includes('webhook.site'))
+    );
+    assert.ok(
+      webhookFinding,
+      `Should detect webhook.site. All titles: ${result.findings.map(f => f.title).join('; ')}`
+    );
+  });
+
+  it('suspicious domain findings reference owasp LLM02', async () => {
+    const result = await scan(FIXTURE, discovery);
+    const suspiciousFindings = result.findings.filter(
+      f => f.severity === 'high' && f.title.toLowerCase().includes('suspicious')
+    );
+    for (const f of suspiciousFindings) {
+      assert.equal(
+        f.owasp, 'LLM02',
+        `Suspicious domain finding ${f.id} should be LLM02, got ${f.owasp}`
+      );
+    }
+  });
+
+  it('all findings have DS-NET- prefix', async () => {
+    const result = await scan(FIXTURE, discovery);
+    const wrongPrefix = result.findings.filter(f => !f.id.startsWith('DS-NET-'));
+    assert.equal(
+      wrongPrefix.length, 0,
+      `All network findings should have DS-NET- prefix. Wrong: ${wrongPrefix.map(f => f.id).join(', ')}`
+    );
+  });
+
+  it('finding IDs start from DS-NET-001 after reset', async () => {
+    const result = await scan(FIXTURE, discovery);
+    if (result.findings.length === 0) return;
+    assert.equal(result.findings[0].id, 'DS-NET-001');
+  });
+
+  it('counts total matches findings array length', async () => {
+    const result = await scan(FIXTURE, discovery);
+    const countTotal = Object.values(result.counts).reduce((s, n) => s + n, 0);
+    assert.equal(
+      countTotal, result.findings.length,
+      `counts total (${countTotal}) should match findings.length (${result.findings.length})`
+    );
+  });
+
+  it('does not emit findings for trusted domains (github.com, anthropic.com)', async () => {
+    const result = await scan(FIXTURE, discovery);
+    const trustedDomainFindings = result.findings.filter(
+      f => (f.evidence && (
+        f.evidence.includes('github.com') ||
+        f.evidence.includes('anthropic.com') ||
+        f.evidence.includes('npmjs.org')
+      ))
+    );
+    assert.equal(
+      trustedDomainFindings.length, 0,
+      `Should not flag trusted domains. Found: ${trustedDomainFindings.map(f => f.evidence).join(', ')}`
+    );
+  });
+});