Release v7.66.0

Added

• The Screenplay skills teach the ui profile shell: root template (an own layout or application-scope screen template, or blueprint <B> <Name> with a version pin), shell option lines, appearance (color scheme, accent) and new screens use template. cratis-screenplay-ui-composition carries compiled worked examples, the PLAY0788 to PLAY0799 error and fix table and a legacy layout negative example (PLAY0791, with its quick fix). The toolchain diagnostics and diagnostic-arguments references list the new codes, and cratis-screenplay-model-authoring teaches the new ui-profiles MCP read tool (44 tools) and the typed nodes that edit the shell. (#733)

Changed

• The Screenplay pin and the byte-identical compiler contract are 4.201.0.
• The profile examples name the shell with root template instead of the legacy layout line, which now warns PLAY0791 and joins the preferred-syntax style codes.