diff --git a/test/bin-entry.test.js b/test/bin-entry.test.js
index 54fb8fd..7926bba 100644
--- a/test/bin-entry.test.js
+++ b/test/bin-entry.test.js
@@ -81,7 +81,8 @@ test('打包內容以白名單決定：四個正本目錄都在，測試與暫
   const packed = JSON.parse(
     execFileSync('npm', ['pack', '--dry-run', '--json'], { cwd: repoRoot, encoding: 'utf8' }),
   );
-  const files = packed[0].files.map((file) => file.path);
+  const manifest = Array.isArray(packed) ? packed[0] : packed[Object.keys(packed)[0]];
+  const files = manifest.files.map((file) => file.path);
 
   for (const dir of ['prompts/', 'scripts/', 'templates/', 'references/', 'bin/']) {
     assert.ok(
diff --git a/test/delegation-assets.test.js b/test/delegation-assets.test.js
new file mode 100644
index 0000000..58cd24a
--- /dev/null
+++ b/test/delegation-assets.test.js
@@ -0,0 +1,63 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { readReference, readPrompt, assertNeutralPrompt } from './helpers/prompt-doc.js';
+
+const RULES = readReference('delegation');
+const PROMPTS = ['sdlc-plan', 'sdlc-analyze', 'sdlc-feat', 'sdlc-fix', 'sdlc-sync', 'sdlc-report'];
+const EXPECTED = [
+  ['sdlc-plan', '列出九段落依據與缺漏'],
+  ['sdlc-analyze', '對四份清單列出疑點'],
+  ['sdlc-analyze', '算出截止日'],
+  ['sdlc-feat', '把議題標題翻成英文'],
+  ['sdlc-feat', '分批提交方案'],
+];
+
+function tableEntries() {
+  return [...RULES.matchAll(/^\| `([^`]+)` \| ([^|]+) \|/gm)]
+    .map((match) => [match[1], match[2].trim()]);
+}
+
+function promptMarkers(name) {
+  const prompt = readPrompt(name);
+  return [...prompt.matchAll(/^### (?:\d+\.\s+)?(.+?)〔可委派〕\s*$/gm)]
+    .map((match) => [name, match[1].trim()]);
+}
+
+// ── 四條判準與雙向集合 ────────────────────────────────────────────
+
+test('委派規則保留四條判準與兩條硬排除', () => {
+  for (const term of ['可驗證的成品', '不會詢問使用者', '失敗能被呼叫端偵測', '不直接寫入 Gitea 或 git']) {
+    assert.match(RULES, new RegExp(term));
+  }
+});
+
+test('委派表與六份正本的標記集合完全一致', () => {
+  const table = tableEntries();
+  const markers = PROMPTS.flatMap(promptMarkers);
+  assert.deepEqual(table, EXPECTED);
+  assert.deepEqual(markers, EXPECTED);
+});
+
+test('每個標記步驟都說明能力降級與部分委派邊界', () => {
+  for (const [name, step] of EXPECTED) {
+    const prompt = readPrompt(name);
+    const marker = prompt.match(new RegExp(`^### (?:\\d+\\.\\s+)?${step}〔可委派〕\\s*$`, 'm'));
+    assert.ok(marker, `${name} 缺少標記：${step}`);
+    const start = marker.index;
+    const body = prompt.slice(start, prompt.indexOf('\n### ', start + 1) === -1 ? prompt.length : prompt.indexOf('\n### ', start + 1));
+    assert.match(body, /你的環境若能把工作交給子代理|實際執行.*不委派/);
+  }
+});
+
+// ── 六份正本的平台與文字契約 ──────────────────────────────────────
+
+test('六份流程正本均為平台中立且使用正確 description 前綴', () => {
+  for (const name of PROMPTS) assertNeutralPrompt(readPrompt(name), name);
+});
+
+test('沒有委派標記的流程仍明確列入規則表的空集合', () => {
+  for (const name of ['sdlc-fix', 'sdlc-sync', 'sdlc-report']) {
+    assert.equal(promptMarkers(name).length, 0, `${name} 不應偷偷出現委派步驟`);
+  }
+  assert.match(RULES, /sdlc-sync.*sdlc-fix.*sdlc-report/);
+});
diff --git a/test/encoding-assets.test.js b/test/encoding-assets.test.js
new file mode 100644
index 0000000..ecc7299
--- /dev/null
+++ b/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);
+  }
+});
diff --git a/test/install-verify.test.js b/test/install-verify.test.js
index d9dd70d..0e57110 100644
--- a/test/install-verify.test.js
+++ b/test/install-verify.test.js
@@ -9,7 +9,7 @@ import test from 'node:test';
 import assert from 'node:assert/strict';
 import { chmodSync, existsSync, mkdirSync, mkdtempSync, readFileSync, rmSync, symlinkSync, writeFileSync } from 'node:fs';
 import { dirname, join } from 'node:path';
-import { manifest, tmpRoot } from './helpers/run-script.js';
+import { manifest, pathWithOnly, tmpRoot } from './helpers/run-script.js';
 import { fakePrompt, makeFakePlugin } from './helpers/fake-plugin.js';
 import { startStubGitea } from './helpers/stub-gitea.js';
 
@@ -114,7 +114,7 @@ test('PATH 上找不到 tea-sdlc 時整體 ok:false，並指出病灶在 PATH 
   const plugin = makeFakePlugin(t, { prompts: PROMPTS });
   const home = makeHome(t);
 
-  const { code, json } = await inHome(plugin, home)(['install'], { shim: false });
+  const { code, json } = await inHome(plugin, home)(['install'], { shim: false, path: pathWithOnly(['node']) });
 
   assert.equal(code, 1);
   assert.equal(json.ok, false);
@@ -261,7 +261,7 @@ test('驗證失敗時已經寫好的轉接檔一份都不刪', async (t) => {
   const home = makeHome(t);
 
   // 病灶在 PATH，不在轉接檔：刪掉轉接檔只會讓使用者從「有點舊但能用」變成什麼都沒有
-  const { json } = await inHome(plugin, home)(['install'], { shim: false });
+  const { json } = await inHome(plugin, home)(['install'], { shim: false, path: pathWithOnly(['node']) });
 
   assert.equal(json.ok, false);
   for (const path of adaptersOf(json)) {
diff --git a/test/install.test.js b/test/install.test.js
index 9d9079f..1eef008 100644
--- a/test/install.test.js
+++ b/test/install.test.js
@@ -176,6 +176,27 @@ test('支援 command 的四個平台產生 command 轉接檔，另外三個產
   assert.deepEqual(filesUnder(join(home, 'work', '.github')), ['skills/sdlc-plan/SKILL.md']);
 });
 
+test('七個平台的轉接檔都保留繁體中文且沒有 UTF-8 亂碼', async (t) => {
+  const plugin = makeFakePlugin(t, { prompts: { 'sdlc-plan': fakePrompt('sdlc-plan') } });
+  const home = makeHome(t, ['claude', 'codex', 'opencode', 'oh-my-pi', 'antigravity', 'kiro', 'copilot']);
+
+  await inHome(plugin, home)(['install']);
+  const files = [
+    join(home, '.claude', 'commands', 'sdlc-plan.md'),
+    join(home, '.codex', 'prompts', 'sdlc-plan.md'),
+    join(home, '.config', 'opencode', 'command', 'sdlc-plan.md'),
+    join(home, '.omp', 'agent', 'commands', 'sdlc-plan.md'),
+    join(home, '.gemini', 'skills', 'sdlc-plan', 'SKILL.md'),
+    join(home, '.kiro', 'skills', 'sdlc-plan', 'SKILL.md'),
+    join(home, 'work', '.github', 'skills', 'sdlc-plan', 'SKILL.md'),
+  ];
+
+  for (const path of files) {
+    const text = new TextDecoder('utf-8', { fatal: true }).decode(readFileSync(path));
+    assert.match(text, /僅由 \/sdlc-plan 指令叫用。/);
+  }
+});
+
 test('轉接檔內容是一句指向 tea-sdlc 的話，不含任何檔案路徑', async (t) => {
   const plugin = makeFakePlugin(t, { prompts: PROMPTS, version: '1.2.3' });
   const home = makeHome(t, ['claude']);