URL builder

[niteshpurohit]

Type: Task
Parent Issue: #425

Summary

Fluent URL builder with query parameter handling, path joining, and automatic encoding

Scope

Fluent URL builder with query parameter handling, path joining, and automatic encoding

Not In Scope

• URL shortening
• URL validation

Acceptance Criteria

• URL.build provides fluent API
• Query parameter handling
• Path joining
• Automatic encoding
• Tests verify URL construction
• Documentation with examples

C++ Native Library: No