Rename signature filter state field to profileState

The DocumentVersionSignatureFilter exposed a field named `state` that
actually filters on the signatory's profile state, which was ambiguous
next to the signature `states` field. Rename it to `profileState`
(GraphQL) / `profile_state` (MCP) across the schema, spec, resolvers,
console app, and n8n node for clarity.

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

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

@@ -294,8 +294,8 @@ func (r *documentVersionResolver) Signatures(ctx context.Context, obj *types.Doc
 			activeContract = filter.ActiveContract
 		}
 
-		if filter.State != nil {
-			profileState = filter.State
+		if filter.ProfileState != nil {
+			profileState = filter.ProfileState
 		}
 	}
 

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

@@ -247,7 +247,7 @@ input DocumentVersionSignatureOrder {
 input DocumentVersionSignatureFilter {
     states: [DocumentVersionSignatureState!]
     activeContract: Boolean
-    state: ProfileState
+    profileState: ProfileState
 }
 
 input DocumentVersionApprovalQuorumOrder {

pkg/server/api/mcp/v1/schema.resolvers.go

@@ -2407,8 +2407,8 @@ func (r *Resolver) ListDocumentVersionSignaturesTool(ctx context.Context, req *m
 			activeContract = input.Filter.ActiveContract
 		}
 
-		if input.Filter.State != nil {
-			profileState = input.Filter.State
+		if input.Filter.ProfileState != nil {
+			profileState = input.Filter.ProfileState
 		}
 	}
 

pkg/server/api/mcp/v1/specification.yaml

@@ -6376,7 +6376,7 @@ components:
             active_contract:
               type: boolean
               description: Signatory contract status
-            state:
+            profile_state:
               $ref: "#/components/schemas/ProfileState"
               description: Signatory profile state