Lifecycle Core Flow Transition Rules - 1- 2: vision proposed with layout/style/stack. - 2- 3: context captured and applied. - 3- 4: blueprint approved and frozen. - 4- 5: contract confirmed and scope locked. - 5- 6: build runs and core functionality works. Block Conditions - Missing approval at any checkpoint. - Major change request after blueprint freeze. Required Outputs - Stage summary and next allowed action. ---