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-message/src/service/template_service.rs

@@ -1,7 +1,5 @@
 use chrono::Utc;
-use sea_orm::{
-    ActiveModelTrait, ColumnTrait, EntityTrait, PaginatorTrait, QueryFilter, Set,
-};
+use sea_orm::{ActiveModelTrait, ColumnTrait, EntityTrait, PaginatorTrait, QueryFilter, Set};
 use uuid::Uuid;
 
 use crate::dto::{CreateTemplateReq, MessageTemplateResp};