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

default.nix

@@ -11,15 +11,15 @@
 }:
 
 stdenv.mkDerivation rec {
-  pname = "minesweeper";
-  version = "0.2.0";
+  pname = "nomines";
+  version = "1.0.0";
 
   src = ./.;
   
   # If you want to use fetchFromGitHub instead:
   # src = fetchFromGitHub {
-  #   owner = "username";
-  #   repo = "minesweeper";
+  #   owner = "bemagri";
+  #   repo = "nomines";
   #   rev = "v${version}";
   #   hash = "sha256-0000000000000000000000000000000000000000000=";
   # };
@@ -39,10 +39,10 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     description = "Modern Minesweeper game with GTK4 interface";
-    homepage = "https://github.com/username/minesweeper";
-    license = licenses.mit;
+    homepage = "https://github.com/bemagri/nomines";
+    license = licenses.gpl3Plus;
     platforms = platforms.linux;
     maintainers = with maintainers; [ /* your name here */ ];
-    mainProgram = "minesweeper";
+    mainProgram = "nomines";
   };
 }