test(workflow-assets): 整合流程正本與委派規則

以能力描述補齊可委派步驟，讓流程正本、委派規則、AGENTS、README 與 ADR 保持同一份繁體中文與 UTF-8 契約。

test/encoding-assets.test.js

@@ -0,0 +1,30 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { join } from 'node:path';
+import { repoRoot } from './helpers/run-script.js';
+
+const files = [
+  ...['sdlc-plan', 'sdlc-analyze', 'sdlc-feat', 'sdlc-fix', 'sdlc-sync', 'sdlc-report']
+    .map((name) => join(repoRoot, 'prompts', `${name}.md`)),
+  join(repoRoot, 'references', 'delegation.md'),
+  join(repoRoot, 'AGENTS.md'),
+  join(repoRoot, 'README.md'),
+  join(repoRoot, 'docs', 'adr', '0001-以集中式雜湊路徑的-worktree-隔離平行工作包.md'),
+  join(repoRoot, 'docs', 'adr', '0002-以能力描述而非工具名表達委派.md'),
+];
+
+test('流程、規則與文件資產都是合法 UTF-8 且沒有替代字元', () => {
+  for (const path of files) {
+    const bytes = readFileSync(path);
+    const text = new TextDecoder('utf-8', { fatal: true }).decode(bytes);
+    assert.equal(text.includes('\uFFFD'), false, `${path} 含替代字元`);
+  }
+});
+
+test('六份流程正本都以繁體中文 description 開頭', () => {
+  for (const path of files.slice(0, 6)) {
+    const text = readFileSync(path, 'utf8');
+    assert.match(text, /^description: 僅由 \/sdlc-[a-z-]+ 指令叫用。/m, path);
+  }
+});