docs: add CLAUDE.md and drop PROJECT_ANALYSIS.md

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude/hooks/token-usage/aptabase.json

@@ -2,7 +2,7 @@
   "enabled": true,
   "app_key": "A-SH-7756143445",
   "aptabase_host": "https://aptabase.hmac.kr",
-  "user_name": "김민성(b16213)",
+  "user_name": "김민성",
   "git_repositories": [
     "D:/MYCLAUDE_PROJECT/workhistory"
   ]