chore: apply cargo fmt across workspace and update docs

- Run cargo fmt on all Rust crates for consistent formatting
- Update CLAUDE.md with WASM plugin commands and dev.ps1 instructions
- Update wiki: add WASM plugin architecture, rewrite dev environment docs
- Minor frontend cleanup (unused imports)

crates/erp-workflow/src/module.rs

@@ -7,9 +7,7 @@ use erp_core::error::AppResult;
 use erp_core::events::EventBus;
 use erp_core::module::ErpModule;
 
-use crate::handler::{
-    definition_handler, instance_handler, task_handler,
-};
+use crate::handler::{definition_handler, instance_handler, task_handler};
 
 /// Workflow module implementing the `ErpModule` trait.
 ///
@@ -37,8 +35,7 @@ impl WorkflowModule {
             )
             .route(
                 "/workflow/definitions/{id}",
-                get(definition_handler::get_definition)
-                    .put(definition_handler::update_definition),
+                get(definition_handler::get_definition).put(definition_handler::update_definition),
             )
             .route(
                 "/workflow/definitions/{id}/publish",
@@ -47,8 +44,7 @@ impl WorkflowModule {
             // Instance routes
             .route(
                 "/workflow/instances",
-                post(instance_handler::start_instance)
-                    .get(instance_handler::list_instances),
+                post(instance_handler::start_instance).get(instance_handler::list_instances),
             )
             .route(
                 "/workflow/instances/{id}",