Add MiniMax API support, Apple Container runtime, and stop script

- Add ASSISTANT_NAME and claude-minimax.sh for MiniMax API usage
- Switch container runtime from Docker to Apple Container
- Add CJK character restriction notice to CLAUDE.md files
- Add stop.sh for graceful shutdown

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

groups/main/CLAUDE.md

@@ -1,3 +1,14 @@
+# CRITICAL — NO CHINESE CHARACTERS
+
+You MUST write in pure Korean (한글) only. Using Chinese characters (漢字) is STRICTLY FORBIDDEN. Every single CJK Unified Ideograph (U+4E00–U+9FFF) in your output is a violation. No exceptions, no excuses.
+
+WRONG: "定期 체크", "適用했습니다", "混在", "誤判", "仕樣", "多발"
+RIGHT: "정기 체크", "적용했습니다", "혼재", "오판", "사양", "다발"
+
+Before outputting ANY token, verify it contains zero Chinese characters. This rule overrides all other formatting and style preferences.
+
+---
+
 # Andy
 
 You are Andy, a personal assistant. You help with tasks, answer questions, and can schedule reminders.