fix(dsh): тест --check без openspec ищет bash через системный PATH (#42)

Co-Authored-By: DeepSeek Harness <noreply@deepseek.com>

dsh/tests/openspec.test.mjs

@@ -1,6 +1,6 @@
 import assert from 'node:assert/strict'
 import { spawnSync } from 'node:child_process'
-import { chmodSync, existsSync, readFileSync } from 'node:fs'
+import { chmodSync, existsSync, mkdirSync, readFileSync, symlinkSync } from 'node:fs'
 import { dirname, join } from 'node:path'
 import test from 'node:test'
 import { fileURLToPath } from 'node:url'
@@ -50,10 +50,18 @@ test('install.sh --check warns but does not fail without the openspec CLI', () =
   const home = tempDir()
   try {
     const bin = join(home, 'bin')
-    const env = { ...process.env, HOME: home, DSH_HOME: join(home, '.dsh'), PATH: bin }
+    mkdirSync(bin, { recursive: true })
+    symlinkSync(process.execPath, join(bin, 'node'))
+    // openspec ставится в /opt/homebrew/bin; здесь только системные каталоги — CLI не найден
+    const env = {
+      ...process.env,
+      HOME: home,
+      DSH_HOME: join(home, '.dsh'),
+      PATH: `${bin}:/usr/bin:/bin:/usr/sbin:/sbin`,
+    }
     const run = spawnSync('bash', [script, '--check'], { env, encoding: 'utf8' })
+    assert.equal(run.status, 0, run.stderr)
     assert.match(run.stdout + run.stderr, /WARN: openspec not found/)
-    assert.equal(run.status, 0)
   } finally {
     cleanup(home)
   }