Rename the entity across the full stack: database table (states_of_applicability → statements_of_applicability), Go model, GraphQL types, MCP specification, CLI commands, frontend components, routes, and display labels. Includes a migration to rename the table and its foreign key column. Widen sidebar from 260px to 280px to fit the longer label. Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>