Studio rendering architecture redesign

Added(13)

• Started redesigning resume template infrastructure
• Added early Executive Clarity and Precision ATS template structures
• Began unifying template rendering flows
• Introduced shared fonts, icons, and document utilities
• Started aligning PDF and web rendering structure
• Added initial rendering contracts and validation updates
• Build and dev workflows may fail
• Some code paths are incomplete
• Rendering systems are partially migrated
• This release is not production-ready
• Alpha quality
• Breaking changes included
• Intended for internal testing, migration work, and architecture validation