Add document types filtering and rename ISMS to GOVERNANCE

Adds 5 new document types (PLAN, REGISTER, RECORD, REPORT, TEMPLATE), renames ISMS to GOVERNANCE, and implements type-based filtering across GraphQL, MCP, and frontend. Includes migration, enum updates, filter implementation with SQL array support, and frontend dropdown UI with Relay refetch pattern.

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

e2e/console/document_test.go

@@ -72,15 +72,15 @@ func TestDocument_Create(t *testing.T) {
 			assertValue: "PROCEDURE",
 		},
 		{
-			name: "with ISMS type",
+			name: "with GOVERNANCE type",
 			input: map[string]any{
-				"title":          "ISMS Document",
-				"content":        "ISMS content",
-				"documentType":   "ISMS",
+				"title":          "Governance Document",
+				"content":        "Governance content",
+				"documentType":   "GOVERNANCE",
 				"classification": "INTERNAL",
 			},
 			assertField: "documentType",
-			assertValue: "ISMS",
+			assertValue: "GOVERNANCE",
 		},
 		{
 			name: "with OTHER type",