feat: expand sudoku analysis and interoperability

tests/formats/document.test.ts

@@ -35,7 +35,30 @@ describe("Sudoku Tools document format", () => {
       centerMarks: Array.from({ length: 81 }, () => [7, 4]),
       colors: Array.from({ length: 81 }, (_, index) => index % 9),
       elapsedMs: 12_345,
-      constraints: [{ type: "killer-cage", cells: [0, 1], sum: 3 }],
+      constraints: [
+        { type: "killer-cage", cells: [0, 1], sum: 3 },
+        {
+          type: "x-sum",
+          side: "top",
+          index: 8,
+          sum: 1111,
+          negated: true,
+        },
+        {
+          type: "skyscraper",
+          side: "left",
+          index: 4,
+          count: 898,
+          negated: true,
+        },
+        {
+          type: "quadruple",
+          cells: [0, 1, 9, 10],
+          digits: [1, 3, 8],
+          negated: true,
+        },
+        { type: "maximum", cell: 10, negated: true },
+      ],
     };
     const parsed = parseSudokuDocument(serializeSudokuDocument(source));
     expect(parsed).toEqual({
@@ -59,6 +82,12 @@ describe("Sudoku Tools document format", () => {
         values: [2, ...Array<number>(15).fill(0)],
       }),
     ).toThrow(/preserve its given digit/u);
+    expect(() =>
+      normalizeSudokuDocument({
+        ...document(Array(81).fill(0)),
+        constraints: [{ type: "quadruple", cells: [0], digits: [1, 2] }],
+      }),
+    ).toThrow(/no more digits than clue cells/u);
   });
 
   it("round-trips compact share hashes", () => {