* fix(security): harden BYO API header against SSRF and input abuse
- Add lib/validateUrl.ts with HTTPS-only + public-IP enforcement,
provider allowlist, IPv6 rejection, and userinfo-in-URL blocking.
- Add lib/byoHeaders.ts — single source of truth for client-side BYO
header construction (deduplicates app/page.tsx & app/play/page.tsx).
- config.ts: validate BYO endpoints via isPublicUrl(), cap header at
2 KB, truncate apiKey/model strings, sanitize log output.
- fetchWithRetry: default redirect to "manual" to block 302-to-intranet.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(security): address Copilot review — trim endpoint, strip control chars, drop unused import
- safeEndpoint: trim whitespace before URL validation
- safeString: strip ASCII control characters to prevent header injection
- play/page.tsx: remove unused BYO_STORAGE_KEY import
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Zonghao Yuan