chore(release): prepare v0.4.0

Promote the changelog entry for 0.4.0 dated April 13, 2026 and add a fresh empty Unreleased section for subsequent work.

Align the release version markers across the private root workspace package, frontend package, electron package, Rust workspace package metadata, and the checked-in Cargo.lock local package entries so the repository reports one coherent release version.

This is a metadata-only release-prep slice. The release candidate code path was validated by CI prior to tagging; this commit only updates changelog and version surfaces.

Author: MrScripty

CHANGELOG.md

@@ -11,6 +11,29 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
 
 - No changes yet.
 
+## [0.4.0] - 2026-04-13
+
+### Added
+
+- Shared cross-platform launcher core with consistent Bash and PowerShell lifecycle flows, including bounded `--release-smoke` verification
+- GitHub release checks and download prompts in the desktop updater flow
+- UniFFI C# smoke verification and release-packaging scripts for generated bindings and native artifacts
+- Packaged-app fallback flow that lets users choose and persist an existing library root when no library is detected automatically
+
+### Changed
+
+- Moved workspace tooling ownership and CI bootstrap flows to the pinned pnpm/Corepack contract across frontend, Electron, and launcher workflows
+- Refined desktop shell defaults and header interactions, including default window sizing, drag behavior, and feature-split production frontend bundles
+- Updated repo-facing documentation for current cross-platform setup, launcher usage, and contribution workflows
+
+### Fixed
+
+- UniFFI download request drift that broke `pumas-uniffi` builds
+- Packaged desktop launcher root detection, shortcut relocation, and release GUI startup behavior
+- Linux CI Electron smoke execution under sandboxed GitHub runners
+- Reconciliation, registry/test isolation, and canonical path handling across Linux, macOS, and Windows CI
+- Tokio example runtime configuration so documented examples compile with the pinned workspace runtime features
+
 ## [0.3.0] - 2026-03-09
 
 ### Added

electron/package.json

@@ -1,6 +1,6 @@
 {
   "name": "pumas-library-electron",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "Electron wrapper for Pumas Library",
   "main": "dist/main.js",
   "author": "Pumas Library Team",

frontend/package.json

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

package.json

@@ -1,7 +1,7 @@
 {
   "name": "pumas-library-workspace",
   "private": true,
-  "version": "0.3.0",
+  "version": "0.4.0",
   "packageManager": "pnpm@10.33.0",
   "workspaces": [
     "frontend",

rust/Cargo.lock

@@ -6,7 +6,7 @@ members = ["crates/pumas-core", "crates/pumas-app-manager", "crates/pumas-rpc",
 default-members = ["crates/pumas-core", "crates/pumas-app-manager", "crates/pumas-rpc", "crates/pumas-uniffi"]
 
 [workspace.package]
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 authors = ["Jeremy"]
 license = "MIT"