chore(installer): release 3.0.0-alpha.1

Bumps package version and promotes the [Unreleased] CHANGELOG block into
[3.0.0-alpha.0] (work that actually shipped in the alpha.0 publish) and
[3.0.0-alpha.1] (the installer-UX series: pnpm default, --preset/--config
directory-path fixes, prompt hints, clearer --help + README).

Author: ynamite

CHANGELOG.md

@@ -2,12 +2,14 @@
 
 All notable changes to `create-viterex` are documented here. Format based on
 [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); this project aims to
-follow [Semantic Versioning](https://semver.org/) once it ships its first
-release. Nothing has been published to npm yet — everything lives under
-`[Unreleased]`.
+follow [Semantic Versioning](https://semver.org/) once a stable release ships.
+Alpha and beta versions live in their own version sections; in-progress work
+lives under `[Unreleased]`.
 
 ## [Unreleased]
 
+## [3.0.0-alpha.1] - 2026-05-19
+
 ### Changed (2026-05-08)
 
 - **Default `--pm` flipped from `yarn` → `pnpm`.** The interactive package-manager select also reorders `pnpm` to first position; existing `--pm yarn` invocations and existing configs pinning `"packageManager": "yarn"` continue to work — only the default for new installs changes.
@@ -24,6 +26,8 @@ release. Nothing has been published to npm yet — everything lives under
 - **Clearer `--help` strings for `--pm`, `--preset`, `--config`, `--layout`** (`src/index.ts`). Each flag's purpose is now legible standalone — readers don't need the README to disambiguate `--config` from `--preset`.
 - **README explainer paragraph** above the Options table distinguishing `--preset` ("starting point — pre-fills some answers") from `--config` ("pins every answer; for CI"). Flag-table description cells rewritten to match.
 
+## [3.0.0-alpha.0] - 2026-05-07
+
 ### Added (2026-05-01)
 
 - **Pipeline task: `Clear Redaxo cache`** (`src/tasks/clear-cache.ts`). Runs `php <console> cache:clear --no-interaction` between *Create remote git repository* (step 14) and *Open frontend and backend in browser* (step 16) so the just-opened browser doesn't show stale templates / modules / asset paths left behind by `setup:run`, addon install, `viterex:install-stubs`, or submodule activation. No skip predicate — `cache:clear` is idempotent and cheap; runs in both fresh and augment mode. Pipeline grew from 16 → 17 steps.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "create-viterex",
-  "version": "3.0.0-alpha.0",
+  "version": "3.0.0-alpha.1",
   "description": "CLI to scaffold a ViteRex (Redaxo + Vite) project",
   "type": "module",
   "author": "ynamite <ynamite@gmail.com>",