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/handler/definition_handler.rs

@@ -94,8 +94,7 @@ where
 {
     require_permission(&ctx, "workflow.update")?;
 
-    let resp =
-        DefinitionService::update(id, ctx.tenant_id, ctx.user_id, &req, &state.db).await?;
+    let resp = DefinitionService::update(id, ctx.tenant_id, ctx.user_id, &req, &state.db).await?;
     Ok(Json(ApiResponse::ok(resp)))
 }
 
@@ -111,14 +110,9 @@ where
 {
     require_permission(&ctx, "workflow.publish")?;
 
-    let resp = DefinitionService::publish(
-        id,
-        ctx.tenant_id,
-        ctx.user_id,
-        &state.db,
-        &state.event_bus,
-    )
-    .await?;
+    let resp =
+        DefinitionService::publish(id, ctx.tenant_id, ctx.user_id, &state.db, &state.event_bus)
+            .await?;
 
     Ok(Json(ApiResponse::ok(resp)))
 }

crates/erp-workflow/src/handler/instance_handler.rs

@@ -23,7 +23,8 @@ where
     S: Clone + Send + Sync + 'static,
 {
     require_permission(&ctx, "workflow.start")?;
-    req.validate().map_err(|e| AppError::Validation(e.to_string()))?;
+    req.validate()
+        .map_err(|e| AppError::Validation(e.to_string()))?;
 
     let resp = InstanceService::start(
         ctx.tenant_id,
@@ -49,8 +50,7 @@ where
 {
     require_permission(&ctx, "workflow.list")?;
 
-    let (instances, total) =
-        InstanceService::list(ctx.tenant_id, &pagination, &state.db).await?;
+    let (instances, total) = InstanceService::list(ctx.tenant_id, &pagination, &state.db).await?;
 
     let page = pagination.page.unwrap_or(1);
     let page_size = pagination.limit();

crates/erp-workflow/src/handler/task_handler.rs

@@ -80,7 +80,8 @@ where
     S: Clone + Send + Sync + 'static,
 {
     require_permission(&ctx, "workflow.approve")?;
-    req.validate().map_err(|e| AppError::Validation(e.to_string()))?;
+    req.validate()
+        .map_err(|e| AppError::Validation(e.to_string()))?;
 
     let resp = TaskService::complete(
         id,
@@ -107,10 +108,10 @@ where
     S: Clone + Send + Sync + 'static,
 {
     require_permission(&ctx, "workflow.delegate")?;
-    req.validate().map_err(|e| AppError::Validation(e.to_string()))?;
+    req.validate()
+        .map_err(|e| AppError::Validation(e.to_string()))?;
 
-    let resp =
-        TaskService::delegate(id, ctx.tenant_id, ctx.user_id, &req, &state.db).await?;
+    let resp = TaskService::delegate(id, ctx.tenant_id, ctx.user_id, &req, &state.db).await?;
 
     Ok(Json(ApiResponse::ok(resp)))
 }