diff --git a/wiki-public/wevia-master-honesty-guard-b12.md b/wiki-public/wevia-master-honesty-guard-b12.md
index d41c0c85a..25c40f85b 100644
--- a/wiki-public/wevia-master-honesty-guard-b12.md
+++ b/wiki-public/wevia-master-honesty-guard-b12.md
@@ -167,3 +167,44 @@ Tests zero regression : FastPath + V84 smart_client_help + pages publiques OK.
 WEVIA devient plus prudente sur les chiffres internes aussi : si un tool retourne vide/incomplet elle refuse de citer les valeurs connues du systemPrompt (146K HCPs, 619 tools).
 
 Workaround : utiliser les intents dedies (ethica_count, tools_registry_count) qui retournent les valeurs live via exec real.
+---
+
+## FIX 6b + 6c — DETERMINISTIC EXTERNAL REFUSE (15:35)
+
+### Problem
+
+Fix 6a (prompt-only) insufficient: LLM cascade non-deterministic.
+- Attempt 1 meteo : honest
+- Attempt 2 meteo : halluc (19 deg C partiellement nuageux)
+- Attempt 3 meteo : halluc (20 deg C nord-ouest)
+Mistral / Qwen ignore buried prompt rules. Only Cerebras obeys.
+
+### Solution 6c : pre-intercept via opus-intents
+
+Same pattern as Fix 5 smart_client_help which works perfectly.
+New INTENT in wevia-opus-intents.php BEFORE LLM cascade.
+Regex : meteo/temperature/humidite/cours/bitcoin/btc/eth/sp500/news/resultat/heure exacte.
+
+### Result
+
+3/3 meteo now deterministically return honest refuse:
+> "Je n ai pas acces a cette information en temps reel. Veux-tu que je lance un outil dedie ?"
+
+Bitcoin, sports, news also handled by same regex.
+
+### 6 honesty defenses layers
+
+1. HONESTY_GUARD_V1 x 3 (enrichPrompts after exec - Fix 1)
+2. HONESTY_GUARD_MAIN_V6 (systemPrompt trailing - Fix 6a)
+3. HONESTY_GUARD_LEAD_V6B (systemPrompt leading - Fix 6b)
+4. EXTERNAL_INFO_REFUSE_V6C (opus-intents pre-intercept - Fix 6c)
+
+Deterministic opus-intents = strong defense.
+Prompt-level = soft defense for unplanned cases.
+
+### Files
+
+- /var/www/html/api/wevia-opus-intents.php : 67001 -> 68182 B (+1181)
+- /var/www/html/api/wevia-autonomous.php : 85050 -> 86228 B (+1178 via Fix 6a + Fix 6b)
+
+Both chattr +i relocked.