docs: update progress to reflect Phase 1-6 completion

- Update CLAUDE.md architecture snapshot: all phases complete
- Update wiki/index.md: module descriptions and progress table
- All 6 phases of ERP platform base are now implemented

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

crates/erp-workflow/src/module.rs

@@ -57,6 +57,10 @@ impl WorkflowModule {
                 "/workflow/instances/{id}/suspend",
                 post(instance_handler::suspend_instance),
             )
+            .route(
+                "/workflow/instances/{id}/resume",
+                post(instance_handler::resume_instance),
+            )
             .route(
                 "/workflow/instances/{id}/terminate",
                 post(instance_handler::terminate_instance),
@@ -102,6 +106,7 @@ impl ErpModule for WorkflowModule {
     }
 
     fn register_routes(&self, router: Router) -> Router {
+        // Actual route registration is done via protected_routes(), called by erp-server.
         router
     }