Add document filters to MCP and n8n APIs

Align MCP and n8n document listing endpoints with the GraphQL console
API so every document filter is available across all three interfaces.

MCP:
- listDocuments: add status filter, default to ACTIVE
- listDocumentVersions: add statuses filter
- DocumentOrderField: add UPDATED_AT

n8n:
- document getAll: add query, documentTypes, classifications, status filters (default ACTIVE)
- document getAllVersions: add statuses filter
- document getAllSignatures: add states and activeContract filters

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

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

@@ -2036,7 +2036,8 @@ func (r *Resolver) ListDocumentsTool(ctx context.Context, req *mcp.CallToolReque
 
 	cursor := types.NewCursor(input.Size, input.Cursor, pageOrderBy)
 
-	documentFilter := coredata.NewDocumentFilter(nil)
+	documentFilter := coredata.NewDocumentFilter(nil).
+		WithStatus([]coredata.DocumentStatus{coredata.DocumentStatusActive})
 	if input.Filter != nil {
 		var query *string
 		if input.Filter.Query != nil && *input.Filter.Query != "" {
@@ -2045,7 +2046,12 @@ func (r *Resolver) ListDocumentsTool(ctx context.Context, req *mcp.CallToolReque
 
 		documentFilter = coredata.NewDocumentFilter(query).
 			WithDocumentTypes(input.Filter.DocumentTypes).
-			WithClassifications(input.Filter.Classifications)
+			WithClassifications(input.Filter.Classifications).
+			WithStatus(input.Filter.Status)
+
+		if len(input.Filter.Status) == 0 {
+			documentFilter = documentFilter.WithStatus([]coredata.DocumentStatus{coredata.DocumentStatusActive})
+		}
 	}
 
 	docPage, err := prb.Documents.ListByOrganizationID(ctx, input.OrganizationID, cursor, documentFilter)
@@ -2168,7 +2174,12 @@ func (r *Resolver) ListDocumentVersionsTool(ctx context.Context, req *mcp.CallTo
 	cursor := types.NewCursor(input.Size, input.Cursor, pageOrderBy)
 	svc := r.ProboService(ctx, input.DocumentID)
 
-	versionPage, err := svc.Documents.ListVersions(ctx, input.DocumentID, cursor, coredata.NewDocumentVersionFilter())
+	versionFilter := coredata.NewDocumentVersionFilter()
+	if input.Filter != nil && len(input.Filter.Statuses) > 0 {
+		versionFilter = versionFilter.WithStatuses(input.Filter.Statuses...)
+	}
+
+	versionPage, err := svc.Documents.ListVersions(ctx, input.DocumentID, cursor, versionFilter)
 	if err != nil {
 		panic(fmt.Errorf("cannot list document versions: %w", err))
 	}

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

@@ -5181,6 +5181,7 @@ components:
       type: string
       enum:
         - CREATED_AT
+        - UPDATED_AT
         - TITLE
         - DOCUMENT_TYPE
       go.probo.inc/mcpgen/type: go.probo.inc/probo/pkg/coredata.DocumentOrderField
@@ -5433,6 +5434,11 @@ components:
               items:
                 $ref: "#/components/schemas/DocumentClassification"
               description: Document classifications
+            status:
+              type: array
+              items:
+                $ref: "#/components/schemas/DocumentStatus"
+              description: Document statuses
 
     ListDocumentsOutput:
       type: object
@@ -5616,6 +5622,14 @@ components:
         cursor:
           $ref: "#/components/schemas/CursorKey"
           description: Page cursor
+        filter:
+          type: object
+          properties:
+            statuses:
+              type: array
+              items:
+                $ref: "#/components/schemas/DocumentVersionStatus"
+              description: Document version statuses
 
     ListDocumentVersionsOutput:
       type: object
@@ -8327,7 +8341,7 @@ tools:
     outputSchema:
       $ref: "#/components/schemas/TakeSnapshotOutput"
   - name: listDocuments
-    description: List all documents for the organization
+    description: List documents for the organization. By default only ACTIVE documents are returned; pass status filter to include ARCHIVED.
     hints:
       readonly: true
       idempotent: true