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test(llm-security): store the malicious-skill demo encoded, materialize at run time

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v8.1.0 S2. examples/malicious-skill-demo/evil-project-health/ (7 files,
30 Unicode Tag chars, a base64 exfil blob) is now one archive,
evil-project-health.archive.json: rot13 text, every codepoint above U+007E
stored as a number, sha256 of each retired file recorded. materialize.mjs
writes it to a temp dir (CLI prints the path); run-demo.sh materializes
and deletes it itself; the six scanner tests that scanned the tree use it.
payload-trees.test.mjs asserts byte identity (mutation-checked).

av-surface: b 8->6, c 1->0, d 2->1. Demo 13/13 before and after. All
scanners report identical findings except git-forensics: it used to scan
this repository's own history (21 findings, none about the demo) and now
reports skipped in a temp dir, which git.test.mjs already accepts.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Kjell Tore Guttormsen 2026-09-22 13:21:22 +02:00
commit b3c47330e1
Signed by: ktg
SSH key fingerprint: SHA256:JakMjO6FTBBzN0Bhfj9saOoEjaFxlSdYuZQQpM/lF9Q
18 changed files with 639 additions and 409 deletions
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7
tests/scanners/git.test.mjs
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@ -10,15 +10,18 @@
// - Correct structure of the scanner result envelope
// - All findings (if any) have the DS-GIT- prefix
import { describe, it, beforeEach } from 'node:test';
import { describe, it, beforeEach, after } 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 { scan } from '../../scanners/git-forensics.mjs';
import { materializeArchive } from '../../examples/malicious-skill-demo/materialize.mjs';
const __dirname = fileURLToPath(new URL('.', import.meta.url));
const FIXTURE = resolve(__dirname, '../../examples/malicious-skill-demo/evil-project-health');
// v8.1.0 (S2): the demo tree is stored encoded and materialized at test time.
const { dir: FIXTURE, cleanup } = materializeArchive();
after(cleanup);
// The plugin root — may or may not be a standalone git repo
const PLUGIN_ROOT = resolve(__dirname, '../..');