chore: Update CLAUDE.md and settings.json for code quality and testing

Author: trurl-master

.claude/settings.json

@@ -3,8 +3,12 @@
     "allow": [
       "Bash(npm run lint)",
       "Bash(npm run typecheck)",
-      "Bash(npm run test*)",
-      "Bash(npm install)"
+      "Bash(npm install)",
+      "Bash(npm run test)",
+      "Bash(npm run test:jest)",
+      "Bash(npm run test:vi)",
+      "Bash(npm run test:swc)",
+      "Bash(npm run test:examples)"
     ],
     "deny": []
   }

CLAUDE.md

@@ -101,4 +101,8 @@ Most complex mock with multiple files:
 
 - `bezier-easing` - Animation easing functions
 - `css-mediaquery` - Media query parsing
-- `puppeteer` - Browser automation for tests
+- `puppeteer` - Browser automation for tests
+
+## Code Quality
+
+- YOU MUST use proper types and type guards. NEVER use "any" or "as unknown as" typecasts