fix(perception): require joint clock readiness before source activation

tests/test_perception_streaming_clock.py

@@ -4,11 +4,62 @@ from dataclasses import replace
 
 import pytest
 
-from k1link.perception.streaming_clock import ClockMappingError, ClockProbe, ClockWindow
+from k1link.perception.streaming_clock import (
+    ClockBounds,
+    ClockMappingError,
+    ClockProbe,
+    ClockWindow,
+)
 
 BASE = 10**16  # Deliberately above IEEE754 exact-integer range.
 
 
+@pytest.mark.parametrize(
+    "fault",
+    [
+        None,
+        "float",
+        "integer",
+        "plus",
+        "leading",
+        "negative_zero",
+        "extra",
+        "missing",
+        "flags",
+        "wide",
+        "schema",
+    ],
+)
+def test_bounds_wire_exact_closed_and_signed(fault):
+    bounds = window().add(probe())
+    document = bounds.to_dict()
+    if fault is None:
+        assert ClockBounds.from_dict(document) == bounds
+        return
+    if fault == "float":
+        document["measured_at_ns"] = float(bounds.measured_at_ns)
+    elif fault == "integer":
+        document["measured_at_ns"] = bounds.measured_at_ns
+    elif fault == "plus":
+        document["offset_upper_ns"] = "+1"
+    elif fault == "leading":
+        document["measured_at_ns"] = "0" + document["measured_at_ns"]
+    elif fault == "negative_zero":
+        document["offset_upper_ns"] = "-0"
+    elif fault == "extra":
+        document["ready"] = True
+    elif fault == "missing":
+        del document["samples"]
+    elif fault == "flags":
+        document["conditional_rate_error_envelope"] = 1
+    elif fault == "wide":
+        document["offset_upper_ns"] = str(2**63)
+    else:
+        document["schema_version"] = "old"
+    with pytest.raises(ClockMappingError):
+        ClockBounds.from_dict(document)
+
+
 def probe(number=1, *, outbound=1_000_000, inbound=2_000_000, offset=-(10**12)):
     sent = BASE + number * 100_000_000
     return ClockProbe(