Tauri Multi-Window & Events

Quick Guide: Create windows from JS with new WebviewWindow(label, options) or from Rust with WebviewWindowBuilder. Communicate across windows using events: emit() broadcasts globally, emitTo(label, event, payload) targets a specific window, emit_filter() targets multiple windows by predicate. Always call the unlisten function returned by listen(). Use tauri-plugin-window-state to persist window position/size across sessions. Window labels must be unique and are used for both event targeting and permission scoping.

Current version: Tauri 2.x (stable). Multi-webview in a single window requires the unstable feature flag.

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CRITICAL: Before Using This Skill

All code must follow project conventions in CLAUDE.md (kebab-case, named exports, import ordering, import type, named constants)

(You MUST give every window a unique label -- labels identify windows for event targeting, permissions, and retrieval)

(You MUST always call the unlisten function returned by listen() / once() -- leaked listeners cause memory leaks in long-running apps)

(You MUST check if a window already exists before creating it -- duplicate labels cause runtime errors)