research: Dütsch driver — continuous settling, domain criteria, profile coverage

common_window requires every pair from each case's own K_case to K+2;
a-priori domain criteria against the 60 D reference (separate from Table 1);
bilinear sampling returns the original fluid corner weight sum; analysis
time-averages bin samples, reports coverage/missing points and fails closed
on an empty common profile set; cases run to the end of cycle 11.

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

docs/validation/duetsch_re100_kc5_protocol.md

@@ -87,8 +87,16 @@ Order (closed):
 3. Optional labelled BC sensitivity: one x-periodic / y-slip case at D = 40,
    40 D; reported as a delta against native only.
 4. Only after step 2 passes: the D = 20 / 40 / 80 ladder on the chosen BC and
-   domain (default 40 D if, against 60 D, `RMS(dFx)/F_ref` and |dc_d|, |dc_i|
-   stay inside the section 6 bands).
+   domain.
+
+Domain criteria (a-priori, ENGINEERING; separate from the Table 1 bands): the
+reference is 60 D at D = 40; 20 D and 40 D are compared with it on the common
+window (same cycle indices) and the common valid point set:
+- `RMS(Fx_L - Fx_60D) / F_ref ≤ .01` over the window (per-step waveforms);
+- `|c_d,L - c_d,60D| ≤ .02` and `|c_i,L - c_i,60D| ≤ .02` (window fits);
+- `max(|u_L - u_60D|, |v_L - v_60D|)` over common points `/ U_max ≤ .02`.
+The chosen domain is the smallest of {20 D, 40 D} passing all three; if
+neither passes, the domain verdict is FAIL and the ladder is not run.
 - Memory/runtime: measured by a smoke run before each new size; measurements
   inform scheduling only, never tolerances.
 
@@ -144,21 +152,20 @@ quarter `s/T < 0.25`. Pair p_k compares cycle k−1 with cycle k.
   first cycle AFTER the last of those pairs. Earliest possible: pairs 3→4,
   4→5, 5→6 pass ⇒ K_case = 7.
 - Common window: K = max over compared cases of K_case; every case scores the
-  same three complete cycles K, K+1, K+2 and must stay settled throughout:
-  pairs (K−1→K), (K→K+1), (K+1→K+2) must pass on every case, otherwise that
-  case is FAIL-CLOSED (an earlier local settle does not waive this).
+  same three complete cycles K, K+1, K+2 and must stay settled continuously:
+  every pair p_j for j = its own K_case .. K+2 must pass (including the wait
+  between its local settle and the common K), otherwise that case is
+  FAIL-CLOSED.
 - Cap: cycle k ends at s/T = k + 0.25, so the last admissible scored cycle is
   11 (ends 11.25 T) and K ≤ 9. Examples: K = 7 → cycles 7–9 (ends 9.25 T);
   K = 9 → cycles 9–11 (ends 11.25 T); any K_case > 9 → FAIL-CLOSED.
-- Every case is run to the end of cycle K + 2 (proportionally more native
-  steps on finer grids).
-- Discard: the initial quarter cycle plus the first 2 full paper cycles
-  (s/T < 2.25). Settling is searched from cycle 3; cap 12 periods from s = 0;
-  unsettled → FAIL-CLOSED (no literature, cross-resolution or VIV statistic).
-- Common window: K = the largest first-settled cycle index over all compared
-  cases; every case is scored on the same 3 cycles K .. K + 2 and must reach
-  them within the cap (proportionally more native steps on finer grids), or
-  the comparison is FAIL-CLOSED.
+- Run length: cases run sequentially; each runs to the end of cycle 11
+  (11.25 T: 28,350 / 56,700 / 113,400 steps for D = 20 / 40 / 80; the 12 T
+  cap is 30,240 / 60,480 / 120,960) and keeps its scalar and profile data, then
+  the common K is chosen. An unscorable partial cycle 12 is not run.
+- Profiles: an empty common valid point set is FAIL-CLOSED; coverage, missing
+  points, bin time weights (equal per step) and the original fluid corner
+  weight sums are reported.
 - The earlier G4 timing check (100 coarse vs 400 diffusive-fine steps) was a
   matched short transient, not periodic evidence.