Initial scaffolding: PS_Launcher v0.2

Client (C# / .NET 8 / WPF, MVVM via CommunityToolkit.Mvvm):
- PSLauncher.App: WPF UI dark theme (Epic-style sidebar + hero + big play button)
  with UpdateAvailableDialog rendering Markdown release notes via Markdig.Wpf.
- PSLauncher.Core: services for installation registry (scans Proserve v{X.Y.Z}/),
  process launcher, manifest fetch, SHA-256 integrity, HTTP download with
  progress, ZIP install via .tmp + atomic rename, update orchestrator.
- PSLauncher.Models: RemoteManifest, InstalledVersion, LocalConfig DTOs.

Server (PHP 8 for OVH mutualisé, deployed under www/PS_Launcher/):
- Front controller + routes /manifest and /releasenotes/{version}.
- Static signed-manifest workflow with tools/sign-manifest.php CLI to
  recompute SHA-256 and sizeBytes after each ZIP upload.
- .htaccess: HTTPS redirect, rewrite, security headers.
- config.example.php template; real config.php is gitignored.

Cohabiting versions: each release lives in its own Proserve v{version}/ folder
under installRoot. Old versions are never deleted automatically.

Roadmap: v0.3 = HTTP Range resume + Polly retry + state.json,
v0.4 = MySQL license + Ed25519 signatures + DPAPI, v0.5 = settings/UX polish.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/PSLauncher.Models/LocalConfig.cs

@@ -0,0 +1,18 @@
+namespace PSLauncher.Models;
+
+public sealed class LocalConfig
+{
+    public int SchemaVersion { get; set; } = 1;
+    public string ServerBaseUrl { get; set; } = "https://example.com/PS_Launcher/api";
+    public string InstallRoot { get; set; } = string.Empty;
+    public string? LastLaunchedVersion { get; set; }
+    public LicenseConfig License { get; set; } = new();
+}
+
+public sealed class LicenseConfig
+{
+    public string? EncryptedKey { get; set; }
+    public DateTime? LastValidationAt { get; set; }
+    public DateTime? CachedEntitlementUntil { get; set; }
+    public string? CachedOwnerName { get; set; }
+}