Add comprehensive timesamples test files for scalar and array types

Added 24 USDA test files covering scalar and array timesamples syntax:

Scalar types (15 tests):
- bool, int, uint, int64, uint64
- half, float, double
- token, assetpath
- vec2f, vec3f, vec4f, quatf, matrix4d

Array types (9 tests):
- bool[], int[], float[], double[], token[]
- vec2f[], vec3f[], vec4f[], quatf[]

Also added corresponding USDC binary format files generated via usdcat.
Each test follows a simple template with single Prim and Attribute with 2-3 keyframes.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

tests/usda/timesamples-array-bool-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_bool_array"
+{
+  bool[] flags.timeSamples = {
+      0: [false, true, false],
+      10: [true, false, true],
+      20: [false, false, true],
+  }
+}

tests/usda/timesamples-array-double-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_double_array"
+{
+  double[] values.timeSamples = {
+      0: [0.0, 1.0, 2.0],
+      10: [3.141592653589793, 2.718281828459045],
+      20: [-1.414213562373095, -2.236067977499790],
+  }
+}

tests/usda/timesamples-array-float-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_float_array"
+{
+  float[] values.timeSamples = {
+      0: [0.0, 1.0, 2.0],
+      10: [3.14, 2.71, 1.41],
+      20: [-1.5, -2.5, -3.5],
+  }
+}

tests/usda/timesamples-array-int-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_int_array"
+{
+  int[] indices.timeSamples = {
+      0: [0, 1, 2, 3],
+      10: [10, 20, 30],
+      20: [-5, -10, -15, -20],
+  }
+}

tests/usda/timesamples-array-quatf-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_quatf_array"
+{
+  quatf[] rotations.timeSamples = {
+      0: [(1.0, 0.0, 0.0, 0.0), (0.707, 0.707, 0.0, 0.0)],
+      10: [(0.0, 1.0, 0.0, 0.0)],
+      20: [(0.5, 0.5, 0.5, 0.5)],
+  }
+}

tests/usda/timesamples-array-token-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_token_array"
+{
+  token[] modes.timeSamples = {
+      0: ["idle", "waiting"],
+      10: ["active", "running", "processing"],
+      20: ["disabled"],
+  }
+}

tests/usda/timesamples-array-vec2f-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_vec2f_array"
+{
+  float2[] uvs.timeSamples = {
+      0: [(0.0, 0.0), (1.0, 0.0), (1.0, 1.0)],
+      10: [(0.5, 0.5)],
+      20: [(0.0, 1.0), (1.0, 1.0)],
+  }
+}

tests/usda/timesamples-array-vec3f-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_vec3f_array"
+{
+  float3[] positions.timeSamples = {
+      0: [(0.0, 0.0, 0.0), (1.0, 0.0, 0.0), (0.0, 1.0, 0.0)],
+      10: [(1.0, 1.0, 1.0), (2.0, 2.0, 2.0)],
+      20: [(-1.0, -1.0, -1.0)],
+  }
+}

tests/usda/timesamples-array-vec4f-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_vec4f_array"
+{
+  float4[] colors.timeSamples = {
+      0: [(1.0, 0.0, 0.0, 1.0), (0.0, 1.0, 0.0, 1.0)],
+      10: [(0.0, 0.0, 1.0, 1.0)],
+      20: [(1.0, 1.0, 1.0, 0.5), (0.0, 0.0, 0.0, 1.0)],
+  }
+}

tests/usda/timesamples-scalar-assetpath-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_assetpath"
+{
+  asset texture.timeSamples = {
+      0: @textures/wood.jpg@,
+      10: @textures/metal.png@,
+      20: @textures/concrete.exr@,
+  }
+}

tests/usda/timesamples-scalar-bool-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_bool"
+{
+  bool enabled.timeSamples = {
+      0: false,
+      10: true,
+      20: false,
+  }
+}

tests/usda/timesamples-scalar-double-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_double"
+{
+  double value.timeSamples = {
+      0: 0.0,
+      10: 3.141592653589793,
+      20: -2.718281828459045,
+  }
+}

tests/usda/timesamples-scalar-float-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_float"
+{
+  float value.timeSamples = {
+      0: 0.0,
+      10: 3.14159,
+      20: -2.71828,
+  }
+}

tests/usda/timesamples-scalar-half-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_half"
+{
+  half value.timeSamples = {
+      0: 0.0,
+      10: 1.5,
+      20: -2.75,
+  }
+}

tests/usda/timesamples-scalar-int-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_int"
+{
+  int count.timeSamples = {
+      0: 0,
+      10: 42,
+      20: -100,
+  }
+}

tests/usda/timesamples-scalar-int64-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_int64"
+{
+  int64 bigcount.timeSamples = {
+      0: 0,
+      10: 9223372036854775807,
+      20: -9223372036854775808,
+  }
+}

tests/usda/timesamples-scalar-matrix4d-001.usda

@@ -0,0 +1,9 @@
+#usda 1.0
+
+def Xform "test_matrix4d"
+{
+  matrix4d transform.timeSamples = {
+      0: ( (1, 0, 0, 0), (0, 1, 0, 0), (0, 0, 1, 0), (0, 0, 0, 1) ),
+      10: ( (2, 0, 0, 0), (0, 2, 0, 0), (0, 0, 2, 0), (0, 0, 0, 1) ),
+  }
+}

tests/usda/timesamples-scalar-quatf-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_quatf"
+{
+  quatf rotation.timeSamples = {
+      0: (1.0, 0.0, 0.0, 0.0),
+      10: (0.707, 0.707, 0.0, 0.0),
+      20: (0.0, 1.0, 0.0, 0.0),
+  }
+}

tests/usda/timesamples-scalar-token-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_token"
+{
+  token mode.timeSamples = {
+      0: "idle",
+      10: "active",
+      20: "disabled",
+  }
+}

tests/usda/timesamples-scalar-uint-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_uint"
+{
+  uint index.timeSamples = {
+      0: 0,
+      10: 42,
+      20: 1000,
+  }
+}

tests/usda/timesamples-scalar-uint64-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_uint64"
+{
+  uint64 bigindex.timeSamples = {
+      0: 0,
+      10: 18446744073709551615,
+      20: 1000000000000,
+  }
+}

tests/usda/timesamples-scalar-vec2f-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_vec2f"
+{
+  float2 uv.timeSamples = {
+      0: (0.0, 0.0),
+      10: (0.5, 0.5),
+      20: (1.0, 1.0),
+  }
+}

tests/usda/timesamples-scalar-vec3f-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_vec3f"
+{
+  float3 position.timeSamples = {
+      0: (0.0, 0.0, 0.0),
+      10: (1.0, 2.0, 3.0),
+      20: (-1.0, -2.0, -3.0),
+  }
+}

tests/usda/timesamples-scalar-vec4f-001.usda

@@ -0,0 +1,10 @@
+#usda 1.0
+
+def Xform "test_vec4f"
+{
+  float4 color.timeSamples = {
+      0: (1.0, 0.0, 0.0, 1.0),
+      10: (0.0, 1.0, 0.0, 1.0),
+      20: (0.0, 0.0, 1.0, 0.5),
+  }
+}