• Merge pull request #1122 from kaitranntt/kai/feat/1121-models-dev-metadata-pricing
• fix(usage): preserve pricing overrides and legacy merges
• fix(usage): clarify static pricing fallback
• fix(usage): honor provider-aware pricing precedence
• fix(usage): avoid cross-provider pricing fallback
• fix(usage): normalize provider aliases in aggregation
• fix(usage): harden models.dev analytics integration
• feat: integrate models.dev pricing metadata