feat(iace): Einsatzbereich / Branche — filtert branchenspezifische Patterns

Neues Feld "Einsatzbereich" auf Interview-Seite (Sektion 7) mit 15 Branchen.
Pattern Engine bekommt MachineTypes aus MatchInput → branchenfremde Patterns
(Medizin, Aufzug, Bau etc.) feuern nur wenn die Branche ausgewählt ist.

Refactoring: iace_handler_init.go aufgeteilt in init + init_helpers (LOC-Limit).

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

ai-compliance-sdk/internal/iace/pattern_engine.go

@@ -20,6 +20,10 @@ type MatchInput struct {
 	// FailureModes are the active failure mode IDs relevant for this project.
 	// Used to filter patterns that require specific failure modes.
 	FailureModes []string `json:"failure_modes,omitempty"`
+	// MachineTypes are the industry sectors / machine types for this project.
+	// Patterns with MachineTypes filter only fire if at least one matches.
+	// Empty = all patterns fire (backwards compatible).
+	MachineTypes []string `json:"machine_types,omitempty"`
 }
 
 // MatchOutput contains the results of pattern matching.
@@ -317,6 +321,22 @@ func (e *PatternEngine) Match(input MatchInput) *MatchOutput {
 // patternMatches checks if a pattern fires given the resolved tag set, lifecycle phases,
 // operational states, and state transitions.
 func patternMatches(p HazardPattern, tagSet map[string]bool, input MatchInput) bool {
+	// If pattern requires specific machine types, project must match at least one.
+	// Patterns without MachineTypes fire for ALL projects (backwards compatible).
+	if len(p.MachineTypes) > 0 && len(input.MachineTypes) > 0 {
+		found := false
+		mtSet := toSet(input.MachineTypes)
+		for _, mt := range p.MachineTypes {
+			if mtSet[mt] {
+				found = true
+				break
+			}
+		}
+		if !found {
+			return false
+		}
+	}
+
 	// All required component tags must be present (AND)
 	for _, t := range p.RequiredComponentTags {
 		if !tagSet[t] {