01efda454f
Change multimodal-looker's primary model from gpt-5.3-codex to gpt-5.4 medium in both runtime and CLI fallback chains. Changes: - Runtime chain (src/shared/model-requirements.ts): primary now gpt-5.4 - CLI chain (src/cli/model-fallback-requirements.ts): primary now gpt-5.4 - Updated test expectations in model-requirements.test.ts - Updated config-manager.test.ts assertion - Updated model-fallback snapshots