feat(llm-security): wire AST scanner into orchestrator and policy

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V3s6WnubSSrFjAQTLQdVbG

tests/scanners/ast-taint-scanner.test.mjs

@@ -11,7 +11,7 @@ import { describe, it, beforeEach } from 'node:test';
 import assert from 'node:assert/strict';
 import { resolve, join } from 'node:path';
 import { fileURLToPath } from 'node:url';
-import { existsSync, mkdtempSync, mkdirSync, writeFileSync, rmSync } from 'node:fs';
+import { existsSync, mkdtempSync, mkdirSync, writeFileSync, rmSync, readFileSync } from 'node:fs';
 import { tmpdir } from 'node:os';
 import { spawnSync } from 'node:child_process';
 import { resetCounter } from '../../scanners/lib/output.mjs';
@@ -103,3 +103,52 @@ describe('ast-taint-scanner: malformed input resilience', () => {
     }
   });
 });
+
+// ---------------------------------------------------------------------------
+// Wiring — OWASP map + orchestrator registration (Step 6)
+// ---------------------------------------------------------------------------
+
+describe('ast-taint-scanner: OWASP map registration', () => {
+  it('AST is present in all four OWASP maps with the right codes', async () => {
+    const { OWASP_MAP, OWASP_AGENTIC_MAP, OWASP_SKILLS_MAP, OWASP_MCP_MAP } =
+      await import('../../scanners/lib/severity.mjs');
+    assert.deepEqual(OWASP_MAP.AST, ['LLM01', 'LLM02']);
+    assert.deepEqual(OWASP_AGENTIC_MAP.AST, []);
+    assert.deepEqual(OWASP_SKILLS_MAP.AST, ['AST02']);
+    assert.deepEqual(OWASP_MCP_MAP.AST, []);
+  });
+});
+
+describe('ast-taint-scanner: orchestrator registration', () => {
+  it('scan-orchestrator imports and lists the AST scanner', () => {
+    const orchPath = resolve(__dirname, '../../scanners/scan-orchestrator.mjs');
+    const text = readFileSync(orchPath, 'utf8');
+    assert.match(text, /import\s+\{\s*scan as astScan\s*\}\s+from\s+['"]\.\/ast-taint-scanner\.mjs['"]/);
+    assert.match(text, /\{\s*name:\s*'ast',\s*fn:\s*astScan\s*\}/);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// Policy — enabled:false short-circuits to skipped (Step 6)
+// ---------------------------------------------------------------------------
+
+describe('ast-taint-scanner: policy disable', () => {
+  it('enabled:false in policy.json short-circuits to skipped', async () => {
+    const dir = mkdtempSync(join(tmpdir(), 'ast-off-'));
+    try {
+      mkdirSync(join(dir, '.llm-security'), { recursive: true });
+      writeFileSync(
+        join(dir, '.llm-security', 'policy.json'),
+        JSON.stringify({ ast: { enabled: false } }),
+      );
+      writeFileSync(join(dir, 'a.py'), 'import os\nk = os.environ["X"]\neval(k)\n');
+      resetCounter();
+      const discovery = await discoverFiles(dir);
+      const result = await scan(dir, discovery);
+      assert.equal(result.status, 'skipped');
+      assert.equal(result.findings.length, 0);
+    } finally {
+      rmSync(dir, { recursive: true, force: true });
+    }
+  });
+});