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+/* Unit Test: New Table Operations (t.shape, t.append, t.prepend) */
+
+..out "=== Testing New Table Operations ===";
+
+/* ===== t.shape TESTS ===== */
+
+/* Test t.shape on array-like table */
+arr : {1, 2, 3, 4, 5};
+arr_shape : t.shape arr;
+..assert arr_shape.size = 5;
+..assert arr_shape.type = "array";
+
+/* Test t.shape on object-like table */
+obj : {name: "Alice", age: 30, city: "NYC"};
+obj_shape : t.shape obj;
+..assert obj_shape.size = 3;
+..assert obj_shape.type = "object";
+
+/* Test t.shape on mixed table (non-sequential keys) */
+mixed : {1: "one", 3: "three", name: "test"};
+mixed_shape : t.shape mixed;
+..assert mixed_shape.size = 3;
+..assert mixed_shape.type = "object";
+
+/* Test t.shape on empty table */
+empty : {};
+empty_shape : t.shape empty;
+..assert empty_shape.size = 0;
+..assert empty_shape.type = "array";
+
+/* ===== t.append TESTS ===== */
+
+/* Test t.append on array-like table */
+numbers : {1, 2, 3};
+appended : t.append numbers 4;
+..assert appended[1] = 1;
+..assert appended[2] = 2;
+..assert appended[3] = 3;
+..assert appended[4] = 4;
+
+/* Verify original unchanged (immutability) */
+..assert numbers[1] = 1;
+..assert numbers[2] = 2;
+..assert numbers[3] = 3;
+
+/* Test t.append on empty table */
+empty_arr : {};
+first_item : t.append empty_arr "hello";
+..assert first_item[1] = "hello";
+
+/* Test t.append with different data types */
+multi_type : {1, "two"};
+with_bool : t.append multi_type true;
+..assert with_bool[1] = 1;
+..assert with_bool[2] = "two";
+..assert with_bool[3] = true;
+
+/* ===== t.prepend TESTS ===== */
+
+/* Test t.prepend on array-like table */
+original : {10, 20, 30};
+prepended : t.prepend original 5;
+..assert prepended[1] = 5;
+..assert prepended[2] = 10;
+..assert prepended[3] = 20;
+..assert prepended[4] = 30;
+
+/* Verify original unchanged (immutability) */
+..assert original[1] = 10;
+..assert original[2] = 20;
+..assert original[3] = 30;
+
+/* Test t.prepend on empty table */
+empty_prep : {};
+first_prep : t.prepend empty_prep "start";
+..assert first_prep[1] = "start";
+
+/* Test t.prepend with object keys preserved */
+obj_with_nums : {1: "one", 2: "two", name: "test"};
+obj_prepended : t.prepend obj_with_nums "zero";
+..assert obj_prepended[1] = "zero";
+..assert obj_prepended[2] = "one";
+..assert obj_prepended[3] = "two";
+..assert obj_prepended.name = "test";
+
+/* ===== COMBINED OPERATIONS TESTS ===== */
+
+/* Test chaining operations */
+base : {10, 20};
+step1 : t.append base 30;
+step2 : t.prepend step1 5;
+final_shape : t.shape step2;
+
+..assert step2[1] = 5;
+..assert step2[2] = 10;
+..assert step2[3] = 20;
+..assert step2[4] = 30;
+..assert final_shape.size = 4;
+..assert final_shape.type = "array";
+
+/* Test with functional combinators */
+data : {1, 2, 3};
+doubled : map x -> x * 2 data;
+extended : t.append doubled 8;
+final_doubled : t.prepend extended 0;
+
+..assert final_doubled[1] = 0;
+..assert final_doubled[2] = 2;
+..assert final_doubled[3] = 4;
+..assert final_doubled[4] = 6;
+..assert final_doubled[5] = 8;
+
+/* ===== ERROR HANDLING TESTS ===== */
+
+/* These should handle gracefully or show appropriate errors */
+/* Note: Specific error behavior depends on implementation */
+
+..out "=== New Table Operations Tests Complete ===";
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