fix: use correct CLAUDE.md convention for Claude Code

Changed from creating `.claude` and `claude.md` files to the official
`CLAUDE.md` convention as documented in Claude Code's official docs.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: strausr

cli.js

@@ -247,8 +247,7 @@ async function main() {
     }
 
     if (aiTools.includes('claude')) {
-      writeFileSync(join(projectPath, '.claude'), aiRulesContent);
-      writeFileSync(join(projectPath, 'claude.md'), aiRulesContent);
+      writeFileSync(join(projectPath, 'CLAUDE.md'), aiRulesContent);
     }
 
     if (aiTools.includes('generic')) {