Remove repository-projects permission from schema and update test

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

Author: Copilot

.github/aw/schemas/agentic-workflow.json

@@ -1195,6 +1195,11 @@
               "type": "string",
               "enum": ["read", "write", "none"]
             },
+            "repository-projects": {
+              "type": "string",
+              "enum": ["read", "write", "none"],
+              "description": "Permission for repository projects (read: view projects, write: manage projects, none: no access)"
+            },
             "security-events": {
               "type": "string",
               "enum": ["read", "write", "none"]

pkg/parser/schema_test.go

@@ -713,7 +713,7 @@ func TestValidateMainWorkflowFrontmatterWithSchema(t *testing.T) {
 			errContains: "additional properties 'invalid_prop' not allowed",
 		},
 		{
-			name: "valid new GitHub Actions properties - permissions with new properties",
+			name: "invalid permissions with unsupported repository-projects property",
 			frontmatter: map[string]any{
 				"on": "push",
 				"permissions": map[string]any{
@@ -725,7 +725,7 @@ func TestValidateMainWorkflowFrontmatterWithSchema(t *testing.T) {
 					"repository-projects": "none",
 				},
 			},
-			wantErr: false,
+			wantErr: true,
 		},
 		{
 			name: "valid claude engine with network permissions",

pkg/parser/schemas/main_workflow_schema.json

@@ -1195,11 +1195,6 @@
               "type": "string",
               "enum": ["read", "write", "none"]
             },
-            "repository-projects": {
-              "type": "string",
-              "enum": ["read", "write", "none"],
-              "description": "Permission for repository projects (read: view projects, write: manage projects, none: no access)"
-            },
             "security-events": {
               "type": "string",
               "enum": ["read", "write", "none"]