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)

apps/web/src/pages/Login.tsx

@@ -1,4 +1,3 @@
-import { useState } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { Form, Input, Button, message, Divider } from 'antd';
 import { UserOutlined, LockOutlined, SafetyCertificateOutlined } from '@ant-design/icons';