Rename State of Applicability to Statement of Applicability

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>

pkg/cmd/soa/statement/add/add.go

@@ -130,9 +130,9 @@ func NewCmdAdd(f *cmdutil.Factory) *cobra.Command {
 			)
 
 			input := map[string]any{
-				"stateOfApplicabilityId": flagSoA,
-				"controlId":              flagControl,
-				"applicability":          flagApplicable,
+				"statementOfApplicabilityId": flagSoA,
+				"controlId":                  flagControl,
+				"applicability":              flagApplicable,
 			}
 
 			if flagJustification != "" {