chore: remove .DS_Store and add to gitignore

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Changed files
+1
.DS_Store

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+1
.gitignore
··· 3 3 .env 4 4 .env.local 5 5 .playwright-mcp/ 6 + .DS_Store