* fix(auth): add URL validation for organization logo fields
- Add URL validation utility for server-side fetched URLs
- Validate logo URLs in tRPC organization schema
- Validate logo URLs in API v2 team DTOs
- Add graceful fallback in logo route for invalid URLs
- Only allow HTTPS and image data URLs
- Add unit tests for URL validation
* fix: add missing IP range and type validation
- Add RFC 6598 CGNAT range (100.64.0.0/10) to blocked IPs
- Add @IsString() decorator before custom URL validators
- Add boundary tests for new IP range
* fix: address review feedback
- Export validateUrlForSSRFSync via @calcom/platform-libraries
- Fix nullable/optional order in Zod schema
* fix: block localhost hostname and explicit null check
- Add localhost to BLOCKED_HOSTNAMES for sync validation
- Use explicit null check (url == null) instead of falsy check
* fix: allow empty string in URL validation
* refactor: extract shared validation logic
- Extract validateUrlCore() to eliminate duplication between sync/async versions
- Add JSDoc to all exported functions for better discoverability
- Remove redundant comments that repeated function names
- Simplify existing comments to be more concise
* fix: reject empty strings in URL validator
Previously if (!url) allowed empty strings to bypass validation.
Now explicitly checks for null/undefined only
