Each command implementation is now in the same file as its ribbon tool definition. Groups moved to a dedicated groups/ toolbar folder. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Split the 4500-line main.rs into focused submodules under src/app/: - mod.rs: H7CAD struct, Message enum, boot/new/run - document.rs: DocumentTab, HistorySnapshot, HistoryState - helpers.rs: pure helper functions - history.rs: undo/redo logic - properties.rs: properties panel logic - layers.rs: layer sync - commands.rs: dispatch_command - cmd_result.rs: apply_cmd_result - view.rs: view, subscription, tab bar - update.rs: update message handler Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
