Squashed commit of the following:

commit 862ff6e08d
Author: Morph01 <thibaut6969delastreet@gmail.com>
Date:   Mon Jan 20 12:49:38 2025 +0100

    feat: affichage de la grille colorée et vérification de tt les contraintes

commit b1dde68ec1
Author: Morph01 <thibaut6969delastreet@gmail.com>
Date:   Sun Jan 5 11:16:34 2025 +0100

    feat: add constraint management and validation to Sudoku class

commit d8486a3bd7
Author: Morph01 <thibaut6969delastreet@gmail.com>
Date:   Sun Jan 5 11:13:19 2025 +0100

    feat: implement constraint classes for Sudoku (row, column, block)

commit 8945072074
Author: Morph01 <thibaut6969delastreet@gmail.com>
Date:   Sun Jan 5 11:12:59 2025 +0100

    refactor: rename methods to French for consistency in the Sudoku application

commit e35123e9fe
Author: Morph01 <thibaut6969delastreet@gmail.com>
Date:   Sun Jan 5 11:11:40 2025 +0100

    fix: update build.gradle to use testRuntimeOnly for JUnit Jupiter engine

app/src/main/java/sudoku/Sudoku.java

@@ -1,10 +1,36 @@
 package sudoku;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class Sudoku {
     private final Grille grille;
+    private final List<Contrainte> contraintes;
 
     public Sudoku(int taille) {
         this.grille = new Grille(taille);
+        this.contraintes = new ArrayList<>();
+    }
+
+    public void ajouterContrainte(Contrainte contrainte) {
+        contraintes.add(contrainte);
+    }
+
+    public void creerBloc(List<int[]> positions) {
+        grille.creerBloc(positions);
+    }
+
+    public boolean estValide(Case c) {
+        for (Contrainte contrainte : contraintes) {
+            if (!contrainte.estRespectee(grille, c)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public boolean verifierToutesContraintes() {
+        return grille.verifierToutesContraintes(contraintes);
     }
 
     public Grille getGrille() {