docs: Dütsch protocol — LDA profile comparison qualitative until data exist

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

docs/validation/duetsch_re100_kc5_protocol.md

@@ -141,10 +141,12 @@ Ledger rows, same schema for every case:
   - against Table 1 (computed reference): |c_d - 2.09| ≤ .06 and
     |c_i - 1.45| ≤ .04 at D = 80 (our engineering bands; the table's own
     96→384 change is reported alongside, not used as an error bar);
-  - against Fig. 8 LDA: only after digitization with figure, tool and
-    digitization uncertainty recorded; RMS over all points of
-    `|u - u_LDA| / U_max` ≤ .05; experimental uncertainty is NOT quantified in
-    the recovered source and this is stated with every comparison.
+  - against Fig. 8 LDA: QUALITATIVE ONLY. The original figure could not be
+    accessed or rendered (TRON 2026-10-30); no digitized ordinates and no
+    measurement uncertainty exist. No quantitative profile pass is claimed.
+    A quantitative criterion may be declared only after an accessible original
+    figure or data set and a documented digitization (figure, tool,
+    uncertainty) exist, and before that comparison is run.
 - No force candidate is selected for an RHS by these results; each is
   reported.