feat(ai-sdk): interlocked-enclosure model — guard-open re-scoping of contact hazards

Class C (phase-aware, generic EN ISO 14120). A contact/entanglement hazard from
a moving part is removed during NORMAL operation when the part is behind an
interlocked guard; it remains only when the guard is open (maintenance/cleaning).

- New HazardPattern.GuardableByEnclosure flag; set on HP096 (friction at
  rotating surfaces) and HP101 (entanglement of hair/clothing).
- Narrative emits interlocked_enclosure for an interlocked door/hood.
- pattern_enclosure.go: suppressedByEnclosure (drop in normal-op-only contexts)
  + guardedLifecycles (re-scope to maintenance/cleaning).
- GT #3 gains the maintenance-phase entanglement/friction rows.

Generic + regression-safe: machines that do not emit interlocked_enclosure are
unaffected. GT #3 recall 80% -> 82.4%, one false positive removed (Aufwickeln).
Kistenhub 97.1% and all 26 Bremse pinned mappings unchanged.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

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

@@ -37,6 +37,7 @@ func GetDGUVExtendedPatterns() []HazardPattern {
 		},
 		{
 			ID: "HP096", NameDE: "Reibung/Abrieb durch rotierende Oberflaechen", NameEN: "Friction/abrasion by rotating surfaces",
+			GuardableByEnclosure:  true,
 			RequiredComponentTags: []string{"rotating_part"},
 			RequiredEnergyTags:    []string{},
 			GeneratedHazardCats:   []string{"mechanical_hazard"},
@@ -88,6 +89,7 @@ func GetDGUVExtendedPatterns() []HazardPattern {
 		},
 		{
 			ID: "HP101", NameDE: "Aufwickeln von Kleidung/Haaren", NameEN: "Winding up of clothing/hair",
+			GuardableByEnclosure:  true,
 			RequiredComponentTags: []string{"rotating_part"},
 			RequiredEnergyTags:    []string{"rotational"},
 			GeneratedHazardCats:   []string{"mechanical_hazard"},