Release 1.0.0: rename to NoMines, add leaderboard, theme support and release metadata

- Rename app/binary/app-id to nomines (io.github.bemagri.nomines), config dir
  moves to ~/.config/nomines with legacy path fallback
- Add persistent best-time leaderboard (Glib::KeyFile)
- Theme-aware board following system light/dark preference
- Beveled 3D cells, confetti win animation, keyboard shortcuts,
  right-click chording, per-difficulty window sizing
- Add AppStream metainfo, validate desktop file and metainfo via meson tests
- Fix license metadata to GPL-3.0-or-later and real homepage

flake.nix

@@ -18,8 +18,8 @@
       {
         # Main package
         packages.default = pkgs.stdenv.mkDerivation rec {
-          pname = "minesweeper";
-          version = "0.1";
+          pname = "nomines";
+          version = "1.0.0";
           src = self;
 
           strictDeps = true;
@@ -53,18 +53,18 @@
           '';
 
           meta = with pkgs.lib; {
-            description = "A simple GTKmm4 Minesweeper game";
-            homepage = "https://example.org/minesweeper";
+            description = "NoMines - a modern GTK4 Minesweeper game";
+            homepage = "https://github.com/bemagri/nomines";
             license = licenses.gpl3Plus;
             platforms = platforms.linux;
-            mainProgram = "minesweeper";
+            mainProgram = "nomines";
           };
         };
 
         # nix run support
         apps.${system}.default = {
           type = "app";
-          program = "${self.packages.${system}.default}/bin/minesweeper";
+          program = "${self.packages.${system}.default}/bin/nomines";
         };
 
         # Dev shell for hacking