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Single choke point: copySecure overrides any positive clearAfterMs with the clipboardClearSeconds setting (0 = user disabled). The 15 call sites keep passing 30000 unchanged — positive just means "auto-clear this secret"; explicit 0 (username copies) still never clears. Synced setting + a select in Settings > Security (Clipboard privacy). Win+V history exclusion is deliberately NOT exposed — a password manager must not offer to leak into history / cloud clipboard. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>