Update model configuration across vendors

Bulk update multiple LLM model definitions with new capabilities or fixes

Managing model registry updates across many models to avoid manual per-model edits and ensure consistency

• · model list
• · update operation (e.g., add capability, bump version, change cost)
• · validation rules

• · updated models.yml or models.json
• · changelog entry
• · validation report

• · Read/Write for model definitions
• · schema validator

• · model definitions file exists and is valid
• · update operation is idempotent

• · schema validation fails on update
• · circular dependencies in model graph
• · cost update breaks cost function

• · bulk operation with validation
• · changelog auto-generated
• · rollback capability via git