feat(ai-sdk): runnable iace-audit propose CLI + live LLM wiring (P2 slice 3)

Makes the offline proposer runnable end-to-end.

- BuildProposerInput (proposer_input.go): non-test engine->hazards path. The
  PatternMatch->Hazard converter is lifted out of the GT test files into
  production scope so both the tests and the CLI share one pipeline.
- iace-audit propose <narrative.json> [<ground-truth.json>]: detect candidates ->
  GT-screen survivors (when a ground truth is given) -> judge (HeuristicJudge by
  default, LLMJudge over ollama when IACE_PROPOSE_LLM=1) -> write the human-review
  queue to audit-reports/proposals.{md,json}. Propose-only.

Smoke run on a dishwasher narrative: 32 fired -> 3 candidates -> queue with a
confident duplicate, a confident distinct, and one punted to the LLM judge; GT
wall recall-safe. Live qwen is opt-in via env; the heuristic default keeps the
tool runnable (and CI deterministic) without a model. Proposal types 2-4
(foreign-framing gates, vocab->tag, coverage blind spots) remain for slice 4.

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

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

@@ -7,8 +7,6 @@ import (
 	"path/filepath"
 	"sort"
 	"testing"
-
-	"github.com/google/uuid"
 )
 
 // TestKistenhub_GTCoverage runs the Kistenhubgeraet ground truth (37 entries)
@@ -110,65 +108,6 @@ func TestKistenhub_GTCoverage(t *testing.T) {
 // patternsToHazardsAndMitigations converts a pattern match output into the
 // Hazard/Mitigation shapes that CompareBenchmark expects. Mirrors what
 // iace_handler_init.go does in production but without DB writes.
-func patternsToHazardsAndMitigations(out *MatchOutput) ([]Hazard, []Mitigation) {
-	hazards := make([]Hazard, 0, len(out.MatchedPatterns))
-	patternToHazard := make(map[string]uuid.UUID, len(out.MatchedPatterns))
-
-	for _, pm := range out.MatchedPatterns {
-		cat := ""
-		if len(pm.HazardCats) > 0 {
-			cat = pm.HazardCats[0]
-		}
-		zone := pm.ZoneDE
-		lifecycle := ""
-		if len(pm.ApplicableLifecycles) > 0 {
-			lifecycle = pm.ApplicableLifecycles[0]
-		}
-		h := Hazard{
-			ID:             uuid.New(),
-			Name:           pm.ScenarioDE,
-			Category:       cat,
-			Description:    pm.ScenarioDE,
-			Scenario:       pm.ScenarioDE,
-			TriggerEvent:   pm.TriggerDE,
-			PossibleHarm:   pm.HarmDE,
-			AffectedPerson: pm.AffectedDE,
-			HazardousZone:  zone,
-			LifecyclePhase: lifecycle,
-		}
-		if h.Name == "" {
-			h.Name = pm.PatternName
-		}
-		hazards = append(hazards, h)
-		patternToHazard[pm.PatternID] = h.ID
-	}
-
-	measureNames := make(map[string]string)
-	for _, m := range GetProtectiveMeasureLibrary() {
-		measureNames[m.ID] = m.Name
-	}
-
-	var mitigations []Mitigation
-	for _, sm := range out.SuggestedMeasures {
-		name := measureNames[sm.MeasureID]
-		if name == "" {
-			name = sm.MeasureID
-		}
-		for _, srcPattern := range sm.SourcePatterns {
-			hid, ok := patternToHazard[srcPattern]
-			if !ok {
-				continue
-			}
-			mitigations = append(mitigations, Mitigation{
-				ID:       uuid.New(),
-				HazardID: hid,
-				Name:     name,
-			})
-		}
-	}
-	return hazards, mitigations
-}
-
 func abbrev(s string, max int) string {
 	if len(s) <= max {
 		return s