Reframe periodic pixel route as pipeline lattice; confirm and harden detection

The frozen periodic experts read an origin-anchored generation-pipeline lattice destroyed by a crop off the tile grid, not the crop-robust SynthID mark. Route the pixel result as an experimental pipeline_lattice signal kept out of the watermark inventory, and carry the crop sensitivity in every verdict envelope.

Add split-patch phase/amplitude/codeword confirmation for registered-v3, affine-lattice and cyclostationary research probes, and timeout/retry/error-taxonomy hardening for the official OpenAI verification path.

tests/test_cli.py

@@ -742,6 +742,7 @@ class TestDetectSynthIDCommand:
         assert result.exit_code == 0
         assert "calibrated image sizes" in result.output
         assert "--register-scale" in result.output
+        assert "--fixed-period" in result.output
 
     def test_unsupported_geometry_is_machine_readable(self, runner, tmp_clean_png):
         result = runner.invoke(main, ["detect-synthid", str(tmp_clean_png), "--json"])
@@ -782,7 +783,7 @@ class TestDetectSynthIDCommand:
         )
 
         assert result.exit_code == 0, result.output
-        assert "Bounded spatial-scale registration was enabled" in result.output
+        assert "Bounded spatial-scale registration was explicitly enabled" in result.output
 
 
 class TestVerifyOpenAISynthIDCommand: