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/handler/numbering_handler.rs

@@ -91,8 +91,7 @@ where
 {
     require_permission(&ctx, "numbering.update")?;
 
-    let rule =
-        NumberingService::update(id, ctx.tenant_id, ctx.user_id, &req, &state.db).await?;
+    let rule = NumberingService::update(id, ctx.tenant_id, ctx.user_id, &req, &state.db).await?;
 
     Ok(Json(ApiResponse::ok(rule)))
 }