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-config/src/entity/mod.rs

@@ -2,5 +2,5 @@ pub mod dictionary;
 pub mod dictionary_item;
 pub mod menu;
 pub mod menu_role;
-pub mod setting;
 pub mod numbering_rule;
+pub mod setting;