refactor: rename teacher_ to master_ in all SKILL.md frontmatter, update descriptions

prebuilt/ajahn_chah/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: teacher_ajahn-chah
+name: master_ajahn-chah
 description: 依据阿姜查（南传泰国森林传承）的教学风格与教义体系
 user-invocable: true
 ---

prebuilt/fazang/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: teacher_fazang
+name: master_fazang
 description: 依据法藏大师（汉传华严宗）的教学风格与教义体系
 user-invocable: true
 ---

prebuilt/huineng/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: teacher_huineng
+name: master_huineng
 description: 依据慧能大师（汉传禅宗）的教学风格与教义体系
 user-invocable: true
 ---

prebuilt/kumarajiva/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: teacher_kumarajiva
+name: master_kumarajiva
 description: 依据鸠摩罗什（汉传三论宗/中观）的教学风格与教义体系
 user-invocable: true
 ---

prebuilt/ouyi/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: teacher_ouyi
+name: master_ouyi
 description: 依据蕅益大师（汉传天台/净土·跨宗派）的教学风格与教义体系
 user-invocable: true
 ---

prebuilt/tsongkhapa/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: teacher_tsongkhapa
+name: master_tsongkhapa
 description: 依据宗喀巴大师（藏传格鲁派）的教学风格与教义体系
 user-invocable: true
 ---

prebuilt/xuanzang/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: teacher_xuanzang
+name: master_xuanzang
 description: 依据玄奘法师（汉传法相唯识宗）的教学风格与教义体系
 user-invocable: true
 ---

prebuilt/xuyun/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: teacher_xuyun
+name: master_xuyun
 description: 依据虚云老和尚（汉传禅宗·五宗兼嗣）的教学风格与教义体系
 user-invocable: true
 ---

prebuilt/yinguang/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: teacher_yinguang
+name: master_yinguang
 description: 依据印光大师（汉传净土宗）的教学风格与教义体系
 user-invocable: true
 ---

prebuilt/zhiyi/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: teacher_zhiyi
+name: master_zhiyi
 description: 依据智顗大师（汉传天台宗）的教学风格与教义体系
 user-invocable: true
 ---

tools/cross_reference.py

@@ -305,7 +305,7 @@ def cmd_concept(bridge: FojinBridge, concept: str, teacher_slugs: list[str]) ->
 
 def main():
     parser = argparse.ArgumentParser(
-        description="Cross-reference Buddhist teachers and concepts via FoJin KG",
+        description="Cross-reference Buddhist masters and concepts via FoJin KG",
         formatter_class=argparse.RawDescriptionHelpFormatter,
         epilog="""Examples:
   %(prog)s lineage "印光" "蕅益"

tools/skill_writer.py

@@ -1,6 +1,6 @@
 """
 Skill Writer — creates and updates teacher skill directories.
-Adapted from colleague-skill's skill_writer.py for Buddhist teacher context.
+Adapted from colleague-skill's skill_writer.py for Buddhist master context.
 """
 
 import json
@@ -17,7 +17,7 @@ except ImportError:
 
 
 SKILL_MD_TEMPLATE = """---
-name: teacher_{slug}
+name: master_{slug}
 description: 依据{name}（{tradition}{school}）的教学风格与教义体系
 user-invocable: true
 ---