feat: add verification evidence presets

src/github-evidence.test.ts

@@ -0,0 +1,46 @@
+import { describe, expect, it } from 'vitest';
+
+import {
+  buildGitHubEvidenceCommand,
+  normalizeGitHubRepo,
+  normalizePositiveInteger,
+} from './github-evidence.js';
+
+describe('GitHub evidence helpers', () => {
+  it('validates repo and numeric identifiers', () => {
+    expect(normalizeGitHubRepo('owner/repo')).toBe('owner/repo');
+    expect(() => normalizeGitHubRepo('../repo')).toThrow(
+      'Unsupported GitHub repo',
+    );
+    expect(normalizePositiveInteger(12, 'pr_number')).toBe(12);
+    expect(() => normalizePositiveInteger(0, 'pr_number')).toThrow(
+      'Missing or invalid pr_number',
+    );
+  });
+
+  it('builds fixed gh commands', () => {
+    expect(
+      buildGitHubEvidenceCommand({
+        action: 'github_pr_status',
+        repo: 'owner/repo',
+        prNumber: 164,
+      }).args,
+    ).toEqual([
+      'pr',
+      'view',
+      '164',
+      '--repo',
+      'owner/repo',
+      '--json',
+      'number,title,state,mergeStateStatus,headRefName,baseRefName,headRefOid,url,statusCheckRollup',
+    ]);
+
+    expect(
+      buildGitHubEvidenceCommand({
+        action: 'github_run_status',
+        repo: 'owner/repo',
+        runId: 123,
+      }).args,
+    ).toContain('123');
+  });
+});