Replace implemented column with CMMI maturity level

Drop the boolean implemented/not-implemented state in favor of a
mandatory CMMI maturity level enum (NONE, INITIAL, MANAGED, DEFINED,
QUANTITATIVELY_MANAGED, OPTIMIZING) stored as a Postgres enum type.

The migration backfills existing rows (NOT_IMPLEMENTED → NONE,
IMPLEMENTED → INITIAL), makes the column NOT NULL, and drops the old
implemented column and its enum type.

- maturityLevel is required on CreateControlInput and non-nullable (!)
  in the GraphQL schema
- CLI displays human-readable CMMI labels instead of raw enum tokens
- SOA table and published document use a single Maturity column in
  place of the old Implemented + Maturity columns
- Remove ControlImplementationState type and all implemented references
  across backend, frontend, CLI, MCP, n8n, and E2E tests

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/server/api/console/v1/control_resolvers.go

@@ -415,9 +415,8 @@ func (r *mutationResolver) CreateControl(ctx context.Context, input types.Create
 			Description:                 input.Description,
 			SectionTitle:                input.SectionTitle,
 			BestPractice:                input.BestPractice,
-			Implemented:                 input.Implemented,
-			NotImplementedJustification: input.NotImplementedJustification,
 			MaturityLevel:               input.MaturityLevel,
+			NotImplementedJustification: input.NotImplementedJustification,
 		},
 	)
 	if err != nil {
@@ -453,9 +452,8 @@ func (r *mutationResolver) UpdateControl(ctx context.Context, input types.Update
 			Description:                 gqlutils.UnwrapOmittable(input.Description),
 			SectionTitle:                input.SectionTitle,
 			BestPractice:                input.BestPractice,
-			Implemented:                 input.Implemented,
+			MaturityLevel:               input.MaturityLevel,
 			NotImplementedJustification: gqlutils.UnwrapOmittable(input.NotImplementedJustification),
-			MaturityLevel:               gqlutils.UnwrapOmittable(input.MaturityLevel),
 		},
 	)
 

pkg/server/api/console/v1/graphql/control.graphql

@@ -1,17 +1,3 @@
-enum ControlImplementationState
-    @goModel(
-        model: "go.probo.inc/probo/pkg/coredata.ControlImplementationState"
-    ) {
-    IMPLEMENTED
-        @goEnum(
-            value: "go.probo.inc/probo/pkg/coredata.ControlImplementationStateImplemented"
-        )
-    NOT_IMPLEMENTED
-        @goEnum(
-            value: "go.probo.inc/probo/pkg/coredata.ControlImplementationStateNotImplemented"
-        )
-}
-
 enum ControlMaturityLevel
     @goModel(model: "go.probo.inc/probo/pkg/coredata.ControlMaturityLevel") {
     NONE
@@ -113,9 +99,8 @@ type Control implements Node {
     name: String!
     description: String
     bestPractice: Boolean!
-    implemented: ControlImplementationState!
     notImplementedJustification: String
-    maturityLevel: ControlMaturityLevel
+    maturityLevel: ControlMaturityLevel!
     regulatory: Boolean! @goField(forceResolver: true)
     contractual: Boolean! @goField(forceResolver: true)
     riskAssessment: Boolean! @goField(forceResolver: true)
@@ -307,9 +292,8 @@ input CreateControlInput {
     name: String!
     description: String
     bestPractice: Boolean!
-    implemented: ControlImplementationState!
+    maturityLevel: ControlMaturityLevel!
     notImplementedJustification: String
-    maturityLevel: ControlMaturityLevel
 }
 
 input UpdateControlInput {
@@ -318,9 +302,8 @@ input UpdateControlInput {
     name: String
     description: String @goField(omittable: true)
     bestPractice: Boolean
-    implemented: ControlImplementationState
+    maturityLevel: ControlMaturityLevel
     notImplementedJustification: String @goField(omittable: true)
-    maturityLevel: ControlMaturityLevel @goField(omittable: true)
 }
 
 input DeleteControlInput {

pkg/server/api/console/v1/types/control.go

@@ -75,7 +75,6 @@ func NewControl(control *coredata.Control) *Control {
 		Name:                        control.Name,
 		Description:                 control.Description,
 		BestPractice:                control.BestPractice,
-		Implemented:                 control.Implemented,
 		NotImplementedJustification: control.NotImplementedJustification,
 		MaturityLevel:               control.MaturityLevel,
 		CreatedAt:                   control.CreatedAt,