feat: 亞絲娜與直葉的角色包 (#6, #7)

build_pack.py 產生對白索引（放在使用者資料目錄）；render_skill.py 把人格卡渲染成
角色 skill 並檢查精選對白逐字來自索引；插件改成執行期從資料目錄讀索引。

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tools/corpus/test_render_skill.py

@@ -0,0 +1,35 @@
+import unittest
+
+import render_skill
+
+CARD = """## 語氣與口癖
+- 例 (v1c01-0001)
+
+## 精選對白
+- [v1c01-0001] greet／joy：「好久不見了，艾基爾」
+- [v1c01-0002] tease／neutral：「你穿得一身黑有什麼理由嗎？」
+"""
+ROWS = [{"id": "v1c01-0001", "text": "好久不見了，艾基爾"}, {"id": "v1c01-0002", "text": "你穿得一身黑有什麼理由嗎？"}]
+
+
+class Render(unittest.TestCase):
+    def test_selected_quotes(self):
+        self.assertEqual(render_skill.selected_quotes(CARD)[0], ("v1c01-0001", "好久不見了，艾基爾"))
+        self.assertEqual(len(render_skill.selected_quotes(CARD)), 2)
+
+    def test_check_quotes_accepts_verbatim_and_flags_changes(self):
+        self.assertEqual(render_skill.check_quotes(CARD, ROWS), [])
+        self.assertEqual(len(render_skill.check_quotes(CARD, [ROWS[0], {"id": "v1c01-0002", "text": "改過的句子"}])), 1)
+        self.assertEqual(len(render_skill.check_quotes(CARD, ROWS[:1])), 1)
+
+    def test_render_has_frontmatter_demotes_headings_and_keeps_rules(self):
+        out = render_skill.render(CARD, "sao-suguha")
+        self.assertTrue(out.startswith("---\nname: sao-suguha\n"))
+        self.assertIn("### 語氣與口癖", out)
+        self.assertNotIn("\n## 精選對白", out)
+        self.assertIn("哥哥", out)
+        self.assertIn("先用一句清楚的話說完", out)
+
+
+if __name__ == "__main__":
+    unittest.main()