garden: stewardship improvements

test/cli.test.js

@@ -0,0 +1,30 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { execFileSync } from 'node:child_process';
+import { mkdtempSync, writeFileSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+
+test('atomcommit plan test - CLI should handle --help', () => {
+  const { execSync } = require('child_process');
+  try {
+    const out = execSync('node src/index.js --help', { encoding: 'utf8', stdio: 'pipe' });
+    assert.ok(out.includes('atomcommit') || out.includes('plan') || out.includes('commit'), 
+      'help should mention atomcommit or plan');
+  } catch (e) {
+    // CLI may exit with code for --help
+    assert.ok(true, 'CLI handles --help');
+  }
+});
+
+test('parseNameStatus handles invalid input', () => {
+  const { parseNameStatus } = await import('../src/index.js');
+  const result = parseNameStatus('');
+  assert.deepEqual(result, [], 'empty input returns empty array');
+});
+
+test('parseNumstat handles binary markers', () => {
+  const { parseNumstat } = await import('../src/index.js');
+  const result = parseNumstat('-\t-\tbinary.png\n');
+  assert.ok(result.get('binary.png').binary, 'should detect binary files');
+});