Bump version to 0.4.0

Tabs + multi-window pane transfer feature release.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "tiletopia",
   "private": true,
-  "version": "0.3.0",
+  "version": "0.4.0",
   "type": "module",
   "scripts": {
     "dev": "vite",

src-tauri/Cargo.lock

@@ -4221,7 +4221,7 @@ dependencies = [
 
 [[package]]
 name = "tiletopia"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "anyhow",
  "axum",

src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "tiletopia"
-version = "0.3.0"
+version = "0.4.0"
 description = "Tiling multi-terminal manager for WSL"
 authors = ["megaproxy"]
 edition = "2021"

src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "tiletopia",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "identifier": "com.megaproxy.tiletopia",
   "build": {
     "beforeDevCommand": "pnpm dev",