Refactor project structure and update configurations. Now first working version

- Updated `.air.conf` for Nix compatibility and simplified build commands.
- Enhanced `.gitignore` to include `tmp` directory.
- Improved `README.md` with clearer instructions and added language details.
- Refined CSS styles for better UI consistency and added alert styles.
- Upgraded `flake.nix` to use Go 1.24 and improved shell environment setup.
- Modified authentication logic in `auth.go` for better user handling.
- Updated `main.go` to dynamically set the listening port and improved logging.
- Added new `routes.go` file for handling game entry and history.
- Enhanced user models and added statistics tracking in `models.go`.
- Improved template rendering and added user feedback messages in HTML templates.
- Removed obsolete build error logs and binaries.

flake.nix

@@ -12,10 +12,9 @@
     devShells = forAllSystems (pkgs:
       let
         # Pick the Go you want. pkgs.go is fine; change to pkgs.go_1_23 if you prefer a fixed version.
-        go = pkgs.go;
+        go = pkgs.go_1_24;
       in {
         default = pkgs.mkShell {
-          # Tools required for cgo and sqlite
           buildInputs = [
             go
             pkgs.gcc
@@ -23,25 +22,18 @@
             pkgs.sqlite
           ];
 
-          # Optional (handy) tools
           nativeBuildInputs = [
             pkgs.git
           ];
 
-          # Enable CGO so mattn/go-sqlite3 works
           CGO_ENABLED = 1;
-
-          # If you plan static linking, uncomment:
-          # hardeningDisable = [ "fortify" ];
-
           shellHook = ''
-            echo "🔧 Nix dev shell ready (CGO_ENABLED=1)."
-            echo "▶ Run: go run ."
+            echo 'Inside nix shell.'
           '';
         };
       });
 
-    # Convenience runner: `nix run`
+    # Used for nix run
     apps = forAllSystems (pkgs: {
       default = {
         type = "app";
@@ -53,7 +45,7 @@
       };
     });
 
-    # Optional: formatter for this repo
+    # Nix formatter
     formatter = forAllSystems (pkgs: pkgs.nixpkgs-fmt);
   };
 }