410a9d0d6f
Phase 2 audit confirmed no FileItem dataclass access sites need migration: - All file_items: list[Metadata] sites are multimodal content dicts (not FileItem dataclass) - FileItem dataclass consumers (app_controller.py:3231-3237, 3401-3408, gui_2.py:369-378, 977-984) already use direct field access - The .get() sites are correctly classified as Metadata collapsed-codepath per FR2 8/8 tests pass + 1 env-var skipped. No code changes needed.