feat(iace): narrative relevance filter + zone normalization for precision

- isPatternRelevant() filters patterns whose zone/scenario mentions
  machine-specific terms (extruder, stanzpresse, spielplatz, etc.)
  absent from the actual machine narrative
- normalizeZoneKey() clusters similar zones for smarter dedup
  (e.g. "Schaltschrank, Sammelschiene" = "Schaltschrank-Innenraum")
- machineSpecificTerms list with 40+ terms for generic filtering

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

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

@@ -151,12 +151,24 @@ func (h *IACEHandler) InitializeProject(c *gin.Context) {
 			}
 		}
 
+		// Build component name set for relevance filtering
+		compNames := make([]string, 0, len(comps))
+		for name := range compByName {
+			compNames = append(compNames, name)
+		}
+
 		created := 0
 		seenCatZone := make(map[string]bool)
 		for _, mp := range matchOutput.MatchedPatterns {
+			// Narrative relevance filter: skip patterns whose zone/scenario
+			// mentions machine-specific terms that don't appear in our components
+			if !isPatternRelevant(mp, narrativeText, compNames) {
+				continue
+			}
+
 			for _, cat := range mp.HazardCats {
-				// Dedup by category + zone (allows multiple hazards per category at different zones)
-				zoneKey := mp.ZoneDE
+				// Dedup by category + normalized zone
+				zoneKey := normalizeZoneKey(mp.ZoneDE)
 				if zoneKey == "" {
 					zoneKey = mp.PatternID
 				}
@@ -170,12 +182,10 @@ func (h *IACEHandler) InitializeProject(c *gin.Context) {
 				if name == "" {
 					name = cat
 				}
-				// Append zone to name for specificity
 				if mp.ZoneDE != "" && !containsSubstring(name, mp.ZoneDE) {
 					name = name + " (" + mp.ZoneDE + ")"
 				}
 
-				// Find matching component by zone name
 				compID := defaultCompID
 				if mp.ZoneDE != "" {
 					zoneNorm := iace.NormalizeDEPublic(mp.ZoneDE)