research: Dütsch analyzer — explicit opt-in horizon, complete-cycle check, HF component report

Default (no --horizon) keeps the original cap-11 scoring. --horizon N
requires complete cycles 1..N in every case, passes the horizon to
common_window and labels the JSON. The unqualified phase-locked HF force
component is reported per case. Protocol section 6b declares the D40/60D
31-cycle duration-only diagnostic.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/unit/test_duetsch_protocol.py

@@ -40,6 +40,10 @@ def test_settling_and_common_window():
     assert p.common_window([7, 7], [passes, {**passes, 8: False}]) is None  # must stay settled
     # a case settled early must keep passing while waiting for the common K
     assert p.common_window([7, 9], [{**passes, 8: False}, passes]) is None
+    long = {k: True for k in range(3, 32)}
+    assert p.common_window([10], [long]) is None                 # default cap 11
+    assert p.common_window([29], [long], last_scored=31) == (29, 30, 31)
+    assert p.common_window([30], [long], last_scored=31) is None
 
 
 def test_solid_aware_bilinear():