Document Krea2 prompt tuning methodology

docs/krea2-ab-methodology.md

@@ -45,6 +45,22 @@ Version: `2026-06-30-generated-route-validation-positive-channel-cleanup`
     code path before closing the category. Manual prompt-axis wins are not
     enough; the generated route can still drop the key contact hierarchy or add
     limiting positive-channel wording.
+14. Treat the final prompt that Krea receives and the rendered generator images
+    as the source of truth. Tests are guardrails for known failures, not proof
+    that the prompt will render the intended pose. If a test passes while the
+    rendered image or prompt audit shows drift, update the test and the method
+    rather than trusting the test.
+15. Atlas/catalog prompt wording must use direct visual prompt sentences. Do
+    not send option-list wording such as `or`, `may`, `optionally`, or `either`
+    in pose cues, and do not append meta instructions such as `keep the visible
+    partner...` or generic camera-layout prose to atlas routes. Krea2 is not an
+    instruction-following LLM in this loop; prompt text should describe the
+    image, not explain a policy.
+16. Do not promote generator edits from a few isolated renders unless the final
+    generated prompt is structurally wrong before rendering. For pose wording
+    changes, collect prompt/image evidence across multiple women, source cases,
+    and seeds when feasible, then patch only the repeated generator-safe
+    hierarchy. Keep early wins as prompt-guide or provisional evidence.
 
 ## Promotion Gates