test: handle missing configure-ecc docs cleanly

docs/ja-JP/skills/configure-ecc/SKILL.md

@@ -133,10 +133,10 @@ Options:
 選択された各スキルについて、正しいソースルートからスキルディレクトリ全体をコピーします：
 
 ```bash
-# ステップ 2a で選択したコアスキルは .agents/skills/ 配下にあります
+# コアスキルは .agents/skills/ 配下にあります
 cp -R "$ECC_ROOT/.agents/skills/<skill-name>" "$TARGET/skills/"
 
-# ステップ 2b/2c で選択したニッチスキルは skills/ 配下にあります
+# ニッチスキルは skills/ 配下にあります
 cp -R "$ECC_ROOT/skills/<skill-name>" "$TARGET/skills/"
 ```
 

docs/zh-CN/skills/configure-ecc/SKILL.md

@@ -202,10 +202,10 @@ mkdir -p $TARGET/skills $TARGET/rules
 对于每个选定的技能，请从正确的源目录复制整个技能目录：
 
 ```bash
-# 步骤 2a 选中的核心技能位于 .agents/skills/
+# 核心技能位于 .agents/skills/
 cp -R "$ECC_ROOT/.agents/skills/<skill-name>" "$TARGET/skills/"
 
-# 步骤 2b/2c 选中的细分技能位于 skills/
+# 细分技能位于 skills/
 cp -R "$ECC_ROOT/skills/<skill-name>" "$TARGET/skills/"
 ```
 

skills/configure-ecc/SKILL.md

@@ -198,10 +198,10 @@ For each selected category, print the full list of skills below and ask the user
 For each selected skill, copy the entire skill directory from the correct source root:
 
 ```bash
-# Core skills selected from Step 2a live under .agents/skills/
+# Core skills live under .agents/skills/
 cp -R "$ECC_ROOT/.agents/skills/<skill-name>" "$TARGET/skills/"
 
-# Niche skills selected from Step 2b/2c live under skills/
+# Niche skills live under skills/
 cp -R "$ECC_ROOT/skills/<skill-name>" "$TARGET/skills/"
 ```
 

tests/docs/configure-ecc-install-paths.test.js

@@ -27,12 +27,16 @@ function test(name, fn) {
   }
 }
 
+function readConfigureEccDoc(relativePath) {
+  return fs.readFileSync(path.join(repoRoot, relativePath), 'utf8');
+}
+
 console.log('\n=== Testing configure-ecc install path guidance ===\n');
 
 for (const relativePath of configureEccDocs) {
-  const content = fs.readFileSync(path.join(repoRoot, relativePath), 'utf8');
-
   test(`${relativePath} separates core and niche skill source roots`, () => {
+    const content = readConfigureEccDoc(relativePath);
+
     assert.ok(
       content.includes('$ECC_ROOT/.agents/skills/<skill-name>'),
       'Expected configure-ecc to document the core skill source root'
@@ -44,6 +48,8 @@ for (const relativePath of configureEccDocs) {
   });
 
   test(`${relativePath} documents defensive copy form for trailing slash sources`, () => {
+    const content = readConfigureEccDoc(relativePath);
+
     assert.ok(
       content.includes('${src%/}'),
       'Expected configure-ecc to strip trailing slash before copying'