fix(iace): accumulate SuggestedMeasureIDs across dedup'd patterns

When multiple patterns match the same category+zone, the first creates
the hazard and later patterns add their SuggestedMeasureIDs to the
existing hazard. This ensures KSS-specific measures (M420) reach the
hazard even if a generic pattern created it first.

seenCatZone changed from map[string]bool to map[string]uuid.UUID
to track which hazard ID was created for each dedupKey.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ai-compliance-sdk/internal/api/handlers/iace_handler_init.go

@@ -160,32 +160,35 @@ func (h *IACEHandler) InitializeProject(c *gin.Context) {
 		}
 
 		created := 0
-		seenCatZone := make(map[string]bool)
+		seenCatZone := make(map[string]uuid.UUID) // dedupKey → hazardID
 		catCount := make(map[string]int)
 		for _, mp := range matchOutput.MatchedPatterns {
-			// Narrative relevance filter: skip patterns whose zone/scenario
-			// mentions machine-specific terms that don't appear in our components
+			// Narrative relevance filter
 			if !isPatternRelevant(mp, narrativeText, compNames) {
 				continue
 			}
 
 			for _, cat := range mp.HazardCats {
-				// Per-category cap: limit hazards per category based on relevance
 				maxForCat := categoryHazardCap(cat, len(comps))
 				if catCount[cat] >= maxForCat {
 					continue
 				}
 
-				// Dedup by category + normalized zone
 				zoneKey := normalizeZoneKey(mp.ZoneDE)
 				if zoneKey == "" {
 					zoneKey = mp.PatternID
 				}
 				dedupKey := cat + ":" + zoneKey
-				if seenCatZone[dedupKey] {
+
+				// If this dedupKey already exists but current pattern has
+				// SuggestedMeasureIDs, add them to the existing hazard
+				if existingHzID, exists := seenCatZone[dedupKey]; exists {
+					if len(mp.SuggestedMeasureIDs) > 0 {
+						existing := hazardPatternMeasures[existingHzID]
+						hazardPatternMeasures[existingHzID] = append(existing, mp.SuggestedMeasureIDs...)
+					}
 					continue
 				}
-				seenCatZone[dedupKey] = true
 
 				name := mp.PatternName
 				if name == "" {
@@ -226,8 +229,8 @@ func (h *IACEHandler) InitializeProject(c *gin.Context) {
 				if cerr == nil {
 					created++
 					catCount[cat]++
+					seenCatZone[dedupKey] = hz.ID
 					hazardIDsByCategory[cat] = append(hazardIDsByCategory[cat], hz.ID)
-					// Remember this pattern's suggested measures for this hazard
 					if len(mp.SuggestedMeasureIDs) > 0 {
 						hazardPatternMeasures[hz.ID] = mp.SuggestedMeasureIDs
 					}