- 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)
- error.rs: AuthError with proper HTTP status mapping
- service/password.rs: Argon2 hash/verify with tests
- service/token_service.rs: JWT sign/validate, token DB storage with SHA-256 hash
- service/auth_service.rs: login/refresh/logout flows with event publishing
- service/user_service.rs: user CRUD with soft delete and tenant isolation
- Added sha2 dependency to workspace for token hashing