Add reproducible randomized test order

src/config.zigmodified+6-0

Changes to src/config.zig

		⋯31 linesShow the 31 lines above this hunk@@ -32,6 +32,8 @@ pub const TestOptions = struct {
32	32	retries: usize = 0,
33	33	repeat: usize = 1,
34	34	fail_on_flaky: bool = false,
	35	+ shuffle: bool = false,
	36	+ seed: ?u64 = null,
35	37	};
36	38
37	39	pub const ParallelOptions = struct {
		⋯169 linesShow the 169 lines above this hunk@@ -207,6 +209,8 @@ test "TestConfig defaults match CLI discovery defaults" {
207	209	try std.testing.expectEqual(@as(usize, 0), config.test_options.retries);
208	210	try std.testing.expectEqual(@as(usize, 1), config.test_options.repeat);
209	211	try std.testing.expect(!config.test_options.fail_on_flaky);
	212	+ try std.testing.expect(!config.test_options.shuffle);
	213	+ try std.testing.expect(config.test_options.seed == null);
210	214	try std.testing.expect(config.sharding.index == null);
211	215	try std.testing.expect(config.sharding.count == null);
212	216	try std.testing.expect(!config.parallel.enabled);
		⋯34 linesShow the 34 lines above this hunk@@ -247,6 +251,8 @@ test "ConfigLoader loads supported JSON and rejects unknown keys" {
247	251	try std.testing.expectEqual(@as(usize, 1), config.test_options.retries);
248	252	try std.testing.expectEqual(@as(usize, 2), config.test_options.repeat);
249	253	try std.testing.expect(!config.test_options.fail_on_flaky);
	254	+ try std.testing.expect(config.test_options.shuffle);
	255	+ try std.testing.expectEqual(@as(?u64, 42), config.test_options.seed);
250	256	try std.testing.expectEqual(@as(?usize, 1), config.sharding.index);
251	257	try std.testing.expectEqual(@as(?usize, 1), config.sharding.count);
252	258