feat(ai-sdk): foreign-framing proposer (P2 slice 4, type 2)

Surfaces fired patterns whose zone names terms the machine's narrative never
mentions — foreign framing that leaks through terms not yet in domainGateTerms
(once a term is a gate term, the ghost-pattern invariant already fences it out).

- FindFramingCandidates (proposer_framing.go): per fired pattern, zone terms with
  no narrative echo (minus a generic hazard-location stoplist). Echo matching is
  bidirectional to survive German compounding (narrative "Steuerung" echoes zone
  "Steuerungssystem"). Heuristic verdict foreign (fully orphan) / plausible
  (partial). Over-surfaces by design — human/LLM is the precision filter.
- Wired into iace-audit propose -> audit-reports/framing.{md,json}, threshold via
  IACE_FRAMING_MIN_ORPHAN (default 0.6).

Honest finding: genuine wrong-MACHINE framing (Walzen, Transportbaender) no longer
fires thanks to the machine-type gate; the residual is mostly cyber/control
patterns with generic-industrial zone vocabulary, candidates for re-framing.
Proposal types 3-4 (vocab->tag, coverage blind spots) remain for slice 5.

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

ai-compliance-sdk/cmd/iace-audit/propose.go

@@ -84,11 +84,17 @@ func cmdPropose(args []string) {
 	writeText("audit-reports/proposals.md", iace.RenderProposalQueue(in.MachineType, proposals))
 	writeJSON("audit-reports/proposals.json", proposals)
 
+	// Type 2: foreign-framing candidates (zone terms with no narrative echo).
+	framing := iace.FindFramingCandidates(fired, in.Narrative, envFloat("IACE_FRAMING_MIN_ORPHAN", 0.6))
+	writeText("audit-reports/framing.md", iace.RenderFramingQueue(in.MachineType, framing))
+	writeJSON("audit-reports/framing.json", framing)
+
 	printSummary("Method P — Dedup Proposer ("+judge.Name()+")", map[string]int{
 		"fired_patterns": len(fired),
 		"candidates":     len(candidates),
 		"in_queue":       len(proposals),
 		"gt_blocked":     blocked,
+		"framing_flags":  len(framing),
 	})
 	if gt == nil {
 		fmt.Fprintln(os.Stderr, "note: no ground truth provided — GT wall NOT applied (candidates not recall-screened)")