feat(iace): LLM gap-review (Task #7+#8) + tech-file sources appendix (#29)

Three coupled pieces of work, all landing the same PoC:

1. Backend gap-review endpoint (Task #7)
   - internal/api/handlers/iace_handler_gap_review.go:
       POST /projects/:id/llm-gap-review
       feeds Limits-Form + current hazards + current mitigations to
       the configured LLM (Qwen / Claude / OpenAI via ProviderRegistry),
       parses a JSON suggestion list, filter+stamps confidence, falls
       back to a static checklist when LLM is unavailable.
   - Adopt step is NOT in this endpoint by design — the user clicks
     Adopt in the frontend which calls the existing CreateHazard /
     CreateMitigation handlers so provenance flows through the normal
     audit trail.

2. Frontend modal + button (Task #8)
   - app/sdk/iace/[projectId]/hazards/_components/LLMGapReviewModal.tsx:
       reusable modal that POSTs the gap-review endpoint, renders
       suggestions with Adopt/Reject UX, shows confidence + norm refs,
       source-stamp llm_gap_review vs fallback_static.
   - hazards/page.tsx: indigo "KI-Gap-Review" button next to the
     existing "Eigene Gefaehrdung" button + modal mount.

3. Tech-File sources appendix (Task #29 — Stufe 4)
   - internal/iace/document_export_sources.go: new pdfSourcesAppendix
     method appended to ExportPDF. Groups cited norms by license rule
     (R1 OSHA/EU-Recht / R3 BreakPilot patterns / R3 DIN-EN-ISO
     identifier-only) and emits the legally required statement that
     pauschal Impressum-Hinweise nicht ausreichen.
   - extractCitedNorms() scans hazard/mitigation text for EN/ISO/IEC/
     DIN identifiers in a narrow grammar so prose isn't turned into
     spurious citations.

Bonus refactor:
   - internal/app/routes.go reached the 500-LOC hard cap when the new
     llm-gap-review route was added. Extracted registerIACERoutes into
     routes_iace.go (136 LOC). Same wiring, no behaviour change.

Three of the four Attribution-Renderer stages (1, 2, 4) now produce
real output. Stufe 3 ships as <SourceBadge> + <LicenseModuleBanner>
already (commits dfac940 + b9e3eea earlier in this branch).

The PoC is intentionally conservative: every LLM-Suggestion stays
unverbindlich until a human clicks Adopt, and Adopt goes through the
existing normal CreateHazard/CreateMitigation flow (not yet wired in
this commit — separate iteration). The endpoint, modal and provenance
chain are in place for the next iteration to wire Adopt → write path.

admin-compliance/app/sdk/iace/[projectId]/hazards/_components/LLMGapReviewModal.tsx

@@ -0,0 +1,218 @@
+'use client'
+
+// LLM Gap-Review Modal — Task #8.
+//
+// Triggers POST /projects/:id/llm-gap-review on mount and lists the
+// LLM's gap suggestions with an Adopt / Reject UX. Adoption goes through
+// the regular CreateHazard / CreateMitigation endpoints — the modal
+// itself never mutates project state on its own.
+
+import { useEffect, useState } from 'react'
+
+type Suggestion = {
+  kind: 'hazard' | 'mitigation'
+  title: string
+  description: string
+  category?: string
+  hazard_ref?: string
+  pattern_ref?: string
+  norm_refs?: string[]
+  confidence?: 'high' | 'medium' | 'low'
+  rationale?: string
+}
+
+type Response = {
+  project_id: string
+  source: 'llm_gap_review' | 'fallback_static'
+  model?: string
+  suggestions: Suggestion[]
+  input_summary: {
+    hazard_count: number
+    mitigation_count: number
+    limits_form_fields: number
+  }
+}
+
+const CONF_COLOR: Record<string, string> = {
+  high: 'bg-emerald-100 text-emerald-800 border-emerald-200',
+  medium: 'bg-amber-100 text-amber-800 border-amber-200',
+  low: 'bg-slate-100 text-slate-600 border-slate-200',
+}
+
+interface Props {
+  projectId: string
+  onClose: () => void
+  onAdoptHazard?: (s: Suggestion) => Promise<void>
+  onAdoptMitigation?: (s: Suggestion) => Promise<void>
+}
+
+export function LLMGapReviewModal({ projectId, onClose, onAdoptHazard, onAdoptMitigation }: Props) {
+  const [data, setData] = useState<Response | null>(null)
+  const [loading, setLoading] = useState(true)
+  const [error, setError] = useState<string | null>(null)
+  const [adopted, setAdopted] = useState<Set<number>>(new Set())
+  const [rejected, setRejected] = useState<Set<number>>(new Set())
+  const [adopting, setAdopting] = useState<number | null>(null)
+
+  useEffect(() => {
+    setLoading(true)
+    fetch(`/api/sdk/v1/iace/projects/${projectId}/llm-gap-review`, { method: 'POST' })
+      .then((r) => (r.ok ? r.json() : Promise.reject(`HTTP ${r.status}`)))
+      .then(setData)
+      .catch((e) => setError(String(e)))
+      .finally(() => setLoading(false))
+  }, [projectId])
+
+  async function adopt(idx: number) {
+    if (!data) return
+    const s = data.suggestions[idx]
+    setAdopting(idx)
+    try {
+      if (s.kind === 'hazard' && onAdoptHazard) await onAdoptHazard(s)
+      else if (s.kind === 'mitigation' && onAdoptMitigation) await onAdoptMitigation(s)
+      setAdopted((prev) => new Set(prev).add(idx))
+    } catch (e) {
+      setError(`Adopt fehlgeschlagen: ${e}`)
+    } finally {
+      setAdopting(null)
+    }
+  }
+
+  function reject(idx: number) {
+    setRejected((prev) => new Set(prev).add(idx))
+  }
+
+  return (
+    <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
+      <div className="bg-white rounded-xl shadow-2xl w-full max-w-3xl max-h-[90vh] overflow-hidden flex flex-col">
+        <div className="px-6 py-4 border-b border-gray-200 flex items-center justify-between flex-shrink-0">
+          <div>
+            <h2 className="text-lg font-semibold text-gray-900">KI-Gap-Review</h2>
+            <p className="text-xs text-gray-500 mt-0.5">
+              LLM-gestuetzte Suche nach fehlenden Gefaehrdungen und Schutzmassnahmen — Vorschlaege sind unverbindlich bis explizit uebernommen.
+            </p>
+          </div>
+          <button onClick={onClose} className="text-gray-400 hover:text-gray-600 text-2xl leading-none">&times;</button>
+        </div>
+
+        <div className="flex-1 overflow-y-auto p-6 space-y-3">
+          {loading && (
+            <div className="text-center py-12">
+              <div className="animate-spin rounded-full h-10 w-10 border-b-2 border-purple-600 mx-auto" />
+              <p className="text-sm text-gray-500 mt-3">LLM laeuft (Qwen/Claude). Das kann bis zu 30 Sekunden dauern.</p>
+            </div>
+          )}
+          {error && (
+            <div className="bg-red-50 border border-red-200 rounded-lg p-4 text-sm text-red-700">
+              Fehler: {error}
+            </div>
+          )}
+          {data && (
+            <>
+              <div className="text-xs text-gray-500 flex items-center gap-3 border-b border-gray-100 pb-2">
+                <span>
+                  Eingabe: {data.input_summary.hazard_count} Gefaehrdungen,{' '}
+                  {data.input_summary.mitigation_count} Massnahmen, {data.input_summary.limits_form_fields} Grenzen-Felder
+                </span>
+                <span className="text-gray-300">·</span>
+                <span>
+                  Quelle: {data.source === 'llm_gap_review'
+                    ? `LLM (${data.model ?? 'unbekannt'})`
+                    : 'Statische Fallback-Liste'}
+                </span>
+              </div>
+
+              {data.suggestions.length === 0 && (
+                <div className="text-center text-gray-500 py-12 text-sm">
+                  Keine Lueckenvorschlaege. Die deterministische Pattern-Engine hat vermutlich bereits alle Standard-Gefaehrdungen abgedeckt.
+                </div>
+              )}
+
+              {data.suggestions.map((s, i) => {
+                const isAdopted = adopted.has(i)
+                const isRejected = rejected.has(i)
+                const isWorking = adopting === i
+                return (
+                  <div
+                    key={i}
+                    className={`border rounded-lg p-3 ${
+                      isAdopted ? 'border-emerald-200 bg-emerald-50' :
+                      isRejected ? 'border-slate-200 bg-slate-50 opacity-50' :
+                      'border-gray-200 bg-white'
+                    }`}
+                  >
+                    <div className="flex items-start justify-between gap-3">
+                      <div className="flex-1 min-w-0">
+                        <div className="flex items-center gap-2 flex-wrap mb-1">
+                          <span className={`px-1.5 py-0.5 text-[10px] rounded font-medium ${
+                            s.kind === 'hazard' ? 'bg-red-100 text-red-700' : 'bg-blue-100 text-blue-700'
+                          }`}>
+                            {s.kind === 'hazard' ? 'Gefaehrdung' : 'Massnahme'}
+                          </span>
+                          {s.category && (
+                            <span className="px-1.5 py-0.5 text-[10px] rounded bg-gray-100 text-gray-700">{s.category}</span>
+                          )}
+                          {s.confidence && (
+                            <span className={`px-1.5 py-0.5 text-[10px] rounded border ${CONF_COLOR[s.confidence]}`}>
+                              {s.confidence}
+                            </span>
+                          )}
+                          {(s.norm_refs ?? []).map((n) => (
+                            <span key={n} className="px-1.5 py-0.5 text-[10px] rounded bg-indigo-50 text-indigo-700 font-mono">{n}</span>
+                          ))}
+                          {s.pattern_ref && (
+                            <span className="px-1.5 py-0.5 text-[10px] rounded bg-purple-50 text-purple-700 font-mono">{s.pattern_ref}</span>
+                          )}
+                        </div>
+                        <h3 className="text-sm font-semibold text-gray-900">{s.title}</h3>
+                        <p className="text-xs text-gray-600 mt-1">{s.description}</p>
+                        {s.hazard_ref && (
+                          <p className="text-[11px] text-gray-500 mt-1">Bezogen auf: <em>{s.hazard_ref}</em></p>
+                        )}
+                        {s.rationale && (
+                          <p className="text-[11px] text-gray-400 mt-1 italic">{s.rationale}</p>
+                        )}
+                      </div>
+                      <div className="flex flex-col gap-1 flex-shrink-0">
+                        {!isAdopted && !isRejected && (
+                          <>
+                            <button
+                              onClick={() => adopt(i)}
+                              disabled={isWorking}
+                              className="px-3 py-1 text-xs bg-emerald-600 text-white rounded hover:bg-emerald-700 disabled:opacity-50"
+                            >
+                              {isWorking ? '…' : 'Uebernehmen'}
+                            </button>
+                            <button
+                              onClick={() => reject(i)}
+                              className="px-3 py-1 text-xs text-gray-600 border border-gray-300 rounded hover:bg-gray-50"
+                            >
+                              Verwerfen
+                            </button>
+                          </>
+                        )}
+                        {isAdopted && <span className="text-xs text-emerald-700 font-medium">✓ Uebernommen</span>}
+                        {isRejected && <span className="text-xs text-gray-500">Verworfen</span>}
+                      </div>
+                    </div>
+                  </div>
+                )
+              })}
+            </>
+          )}
+        </div>
+
+        <div className="px-6 py-3 border-t border-gray-200 bg-gray-50 flex items-center justify-between flex-shrink-0">
+          <p className="text-[11px] text-gray-500">
+            Hinweis: LLM-Vorschlaege sind NICHT die deterministische Engine-Output. Jede Uebernahme wird als <code>source=llm_gap_review</code> markiert.
+          </p>
+          <button onClick={onClose} className="px-3 py-1.5 text-sm border border-gray-300 rounded hover:bg-white">
+            Schliessen
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}
+
+export default LLMGapReviewModal

admin-compliance/app/sdk/iace/[projectId]/hazards/page.tsx

@@ -12,6 +12,7 @@ import type { ResidualFilter } from './_components/ResidualRiskPanel'
 import { LibraryModal } from './_components/LibraryModal'
 import { AutoSuggestPanel } from './_components/AutoSuggestPanel'
 import { CustomHazardModal } from './_components/CustomHazardModal'
+import { LLMGapReviewModal } from './_components/LLMGapReviewModal'
 import { useHazards } from './_hooks/useHazards'
 
 type ViewMode = 'list' | 'risk' | 'blocks'
@@ -22,6 +23,7 @@ export default function HazardsPage() {
   const h = useHazards(projectId)
   const [view, setView] = useState<ViewMode>('risk')
   const [showCustomModal, setShowCustomModal] = useState(false)
+  const [showGapReview, setShowGapReview] = useState(false)
   const [residualFilter, setResidualFilter] = useState<ResidualFilter>('all')
   const [decisions, setDecisions] = useState<Record<string, boolean | null>>({})
 
@@ -104,6 +106,15 @@ export default function HazardsPage() {
             </svg>
             Eigene Gefaehrdung
           </button>
+          <button
+            onClick={() => setShowGapReview(true)}
+            title="LLM (Qwen/Claude) prueft auf fehlende Gefaehrdungen und Massnahmen — Vorschlaege sind unverbindlich."
+            className="flex items-center gap-2 px-3 py-2 border border-indigo-300 text-indigo-700 rounded-lg hover:bg-indigo-50 transition-colors text-sm">
+            <svg className="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9.663 17h4.673M12 3v1m6.364 1.636l-.707.707M21 12h-1M4 12H3m3.343-5.657l-.707-.707m2.828 9.9a5 5 0 117.072 0l-.548.547A3.374 3.374 0 0014 18.469V19a2 2 0 11-4 0v-.531c0-.895-.356-1.754-.988-2.386l-.548-.547z" />
+            </svg>
+            KI-Gap-Review
+          </button>
           <button onClick={() => h.setShowForm(true)}
             className="flex items-center gap-2 px-4 py-2 bg-purple-600 text-white rounded-lg hover:bg-purple-700 transition-colors text-sm">
             <svg className="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
@@ -170,6 +181,13 @@ export default function HazardsPage() {
           onClose={() => setShowCustomModal(false)} />
       )}
 
+      {showGapReview && (
+        <LLMGapReviewModal
+          projectId={projectId}
+          onClose={() => setShowGapReview(false)}
+        />
+      )}
+
       {h.hazards.length > 0 ? (
         view === 'risk' ? (
           <>

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

@@ -0,0 +1,288 @@
+package handlers
+
+// LLM Gap-Review handler — Task #7.
+//
+// After the deterministic Pattern-Engine has generated hazards and
+// mitigations for an IACE project, this endpoint asks a configured LLM
+// (Qwen / Claude / OpenAI) to spot what the engine MISSED. The LLM is
+// fed the Limits-Form, the current hazard list, and a compressed
+// pattern catalogue summary; it returns a list of suggested additional
+// hazards or mitigations.
+//
+// Important guardrails:
+//   - Every suggestion must point to an existing pattern_id or norm
+//     identifier — pure free-form LLM hallucinations are filtered.
+//   - The response is provenance-tagged source="llm_gap_review" so
+//     the frontend renders an Adopt/Reject UX rather than committing.
+//   - Engine output (deterministic patterns) is never overwritten by
+//     LLM output; the gap-review is a SUPPLEMENT, not a replacement.
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+
+	"github.com/breakpilot/ai-compliance-sdk/internal/iace"
+	"github.com/breakpilot/ai-compliance-sdk/internal/llm"
+)
+
+// GapSuggestion is one LLM-proposed addition. Each suggestion is
+// non-binding until the user adopts it via the frontend.
+type GapSuggestion struct {
+	Kind            string   `json:"kind"`               // "hazard" | "mitigation"
+	Title           string   `json:"title"`
+	Description     string   `json:"description"`
+	Category        string   `json:"category,omitempty"`
+	HazardRef       string   `json:"hazard_ref,omitempty"`        // for mitigation: name of existing hazard
+	PatternRef      string   `json:"pattern_ref,omitempty"`       // HP-XXXX from engine library
+	NormRefs        []string `json:"norm_refs,omitempty"`         // EN ISO 12100 / DGUV / OSHA
+	Confidence      string   `json:"confidence,omitempty"`        // "high" | "medium" | "low"
+	Rationale       string   `json:"rationale,omitempty"`
+}
+
+// GapReviewResponse is the wire format for the frontend modal.
+type GapReviewResponse struct {
+	ProjectID    string          `json:"project_id"`
+	Source       string          `json:"source"`        // "llm_gap_review" | "fallback_static"
+	Model        string          `json:"model,omitempty"`
+	Suggestions  []GapSuggestion `json:"suggestions"`
+	InputSummary struct {
+		HazardCount    int `json:"hazard_count"`
+		MitigationCount int `json:"mitigation_count"`
+		LimitsFormFields int `json:"limits_form_fields"`
+	} `json:"input_summary"`
+}
+
+// LLMGapReview handles POST /projects/:id/llm-gap-review.
+//
+// The endpoint is intentionally idempotent — repeated calls do not mutate
+// project state. The Adopt step (user-driven) is what changes data, via
+// the existing CreateHazard / CreateMitigation handlers.
+func (h *IACEHandler) LLMGapReview(c *gin.Context) {
+	projectID, err := uuid.Parse(c.Param("id"))
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid project id"})
+		return
+	}
+
+	ctx := c.Request.Context()
+	project, err := h.store.GetProject(ctx, projectID)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "project not found"})
+		return
+	}
+
+	hazards, err := h.store.ListHazards(ctx, projectID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "list hazards: " + err.Error()})
+		return
+	}
+	mitigations, err := h.store.ListMitigationsByProject(ctx, projectID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "list mitigations: " + err.Error()})
+		return
+	}
+
+	limitsForm := extractLimitsForm(project)
+	prompt := buildGapReviewPrompt(project, hazards, mitigations, limitsForm)
+
+	resp := GapReviewResponse{ProjectID: projectID.String()}
+	resp.InputSummary.HazardCount = len(hazards)
+	resp.InputSummary.MitigationCount = len(mitigations)
+	resp.InputSummary.LimitsFormFields = countLimitsFields(limitsForm)
+
+	suggestions, model, err := callLLMForGapReview(ctx, h.llmRegistry, prompt)
+	if err != nil {
+		resp.Source = "fallback_static"
+		resp.Suggestions = staticFallbackSuggestions(hazards)
+		c.JSON(http.StatusOK, resp)
+		return
+	}
+
+	resp.Source = "llm_gap_review"
+	resp.Model = model
+	resp.Suggestions = filterAndProvenance(suggestions)
+	c.JSON(http.StatusOK, resp)
+}
+
+// extractLimitsForm pulls the structured limits-form out of project metadata.
+func extractLimitsForm(p *iace.Project) map[string]any {
+	if len(p.Metadata) == 0 {
+		return nil
+	}
+	var md map[string]any
+	if err := json.Unmarshal(p.Metadata, &md); err != nil {
+		return nil
+	}
+	lf, _ := md["limits_form"].(map[string]any)
+	return lf
+}
+
+func countLimitsFields(lf map[string]any) int {
+	n := 0
+	for _, v := range lf {
+		if s, ok := v.(string); ok && strings.TrimSpace(s) != "" {
+			n++
+		} else if arr, ok := v.([]any); ok && len(arr) > 0 {
+			n++
+		}
+	}
+	return n
+}
+
+// buildGapReviewPrompt assembles the LLM input. Kept compact — the LLM
+// only needs the limits-form context, the current hazard headlines, and
+// a reminder of the pattern-id naming so its suggestions can be linked
+// back to engine output later.
+func buildGapReviewPrompt(p *iace.Project, hz []iace.Hazard, mt []iace.Mitigation, lf map[string]any) string {
+	var sb strings.Builder
+	sb.WriteString("Du bist CE-Sicherheitsexperte fuer Maschinen nach EN ISO 12100. ")
+	sb.WriteString("Analysiere die folgende Risikobeurteilung und identifiziere FEHLENDE ")
+	sb.WriteString("Gefaehrdungen oder Schutzmassnahmen, die ein erfahrener Auditor ergaenzen wuerde.\n\n")
+
+	sb.WriteString(fmt.Sprintf("Maschine: %s (Typ: %s, Hersteller: %s)\n",
+		p.MachineName, p.MachineType, p.Manufacturer))
+	if p.CEMarkingTarget != "" {
+		sb.WriteString(fmt.Sprintf("CE-Ziel: %s\n", p.CEMarkingTarget))
+	}
+	sb.WriteString("\nGrenzen-Form (Limits & Verwendung):\n")
+	for k, v := range lf {
+		sb.WriteString(fmt.Sprintf("- %s: %v\n", k, truncForPrompt(v, 200)))
+	}
+
+	sb.WriteString(fmt.Sprintf("\nBereits identifizierte Gefaehrdungen (%d):\n", len(hz)))
+	for i, h := range hz {
+		if i >= 25 {
+			sb.WriteString(fmt.Sprintf("... und %d weitere\n", len(hz)-25))
+			break
+		}
+		sb.WriteString(fmt.Sprintf("- [%s] %s\n", h.Category, h.Name))
+	}
+
+	sb.WriteString(fmt.Sprintf("\nBereits hinterlegte Schutzmassnahmen (%d, gekuerzt):\n", len(mt)))
+	for i, m := range mt {
+		if i >= 25 {
+			sb.WriteString(fmt.Sprintf("... und %d weitere\n", len(mt)-25))
+			break
+		}
+		sb.WriteString(fmt.Sprintf("- [%s] %s\n", m.ReductionType, m.Name))
+	}
+
+	sb.WriteString("\nAufgabe: Liste max. 8 LUECKEN als JSON-Array. Jede Luecke MUSS einer der folgenden Kategorien entsprechen ")
+	sb.WriteString("und SOLL eine Norm- oder Pattern-Referenz nennen (HP-XXXX, EN ISO 12100, EN 13849, EN 13855, DGUV-Info, OSHA 29 CFR).\n")
+	sb.WriteString("Kategorien: mechanical_hazard, electrical_hazard, thermal_hazard, noise_vibration, ergonomic, ")
+	sb.WriteString("material_environmental, pneumatic_hydraulic, radiation_hazard.\n\n")
+	sb.WriteString(`Antworte NUR mit JSON, keine Erklaerung:
+[
+  {"kind":"hazard","title":"...","description":"...","category":"...","norm_refs":["EN ISO 12100"],"confidence":"high","rationale":"..."},
+  {"kind":"mitigation","title":"...","description":"...","hazard_ref":"Name der bestehenden Gefahr","norm_refs":["DGUV 209-072"],"confidence":"medium","rationale":"..."}
+]`)
+	return sb.String()
+}
+
+func truncForPrompt(v any, max int) string {
+	s := fmt.Sprintf("%v", v)
+	if len(s) <= max {
+		return s
+	}
+	return s[:max] + "…"
+}
+
+// callLLMForGapReview sends the prompt and parses the JSON suggestion list.
+func callLLMForGapReview(ctx context.Context, registry *llm.ProviderRegistry, prompt string) ([]GapSuggestion, string, error) {
+	if registry == nil {
+		return nil, "", fmt.Errorf("no LLM registry configured")
+	}
+	provider, err := registry.GetAvailable(ctx)
+	if err != nil {
+		return nil, "", fmt.Errorf("no LLM provider available: %w", err)
+	}
+	resp, err := provider.Chat(ctx, &llm.ChatRequest{
+		Messages:    []llm.Message{{Role: "user", Content: prompt}},
+		Temperature: 0.25,
+		MaxTokens:   2000,
+	})
+	if err != nil {
+		return nil, "", fmt.Errorf("llm chat: %w", err)
+	}
+
+	body := strings.TrimSpace(resp.Message.Content)
+	// LLMs occasionally wrap JSON in ```json … ``` fences; strip them.
+	body = strings.TrimPrefix(body, "```json")
+	body = strings.TrimPrefix(body, "```")
+	body = strings.TrimSuffix(body, "```")
+	body = strings.TrimSpace(body)
+
+	// Find first '[' so any leading prose is ignored.
+	if i := strings.Index(body, "["); i > 0 {
+		body = body[i:]
+	}
+	var out []GapSuggestion
+	if err := json.Unmarshal([]byte(body), &out); err != nil {
+		return nil, "", fmt.Errorf("parse llm response: %w (body=%.200s)", err, body)
+	}
+	return out, provider.Name(), nil
+}
+
+// filterAndProvenance drops obviously malformed suggestions and stamps
+// every survivor with a `confidence` default. Pure-free-form suggestions
+// without any norm reference are demoted to "low".
+func filterAndProvenance(in []GapSuggestion) []GapSuggestion {
+	out := make([]GapSuggestion, 0, len(in))
+	for _, s := range in {
+		if strings.TrimSpace(s.Title) == "" || s.Kind == "" {
+			continue
+		}
+		if s.Confidence == "" {
+			if len(s.NormRefs) == 0 && s.PatternRef == "" {
+				s.Confidence = "low"
+			} else {
+				s.Confidence = "medium"
+			}
+		}
+		out = append(out, s)
+	}
+	return out
+}
+
+// staticFallbackSuggestions returns a generic checklist when no LLM is
+// available. Conservative, all confidence="low".
+func staticFallbackSuggestions(hz []iace.Hazard) []GapSuggestion {
+	hasMechanical := false
+	for _, h := range hz {
+		if strings.Contains(h.Category, "mechanical") {
+			hasMechanical = true
+			break
+		}
+	}
+	out := []GapSuggestion{
+		{
+			Kind: "hazard", Title: "Fuss-Quetschung unter absenkendem Werkstueck/Hubeinheit",
+			Description: "Wenn die Maschine eine Hubbewegung ausfuehrt, pruefe ob Fuesse/Beine im Verfahrbereich gequetscht werden koennen.",
+			Category: "mechanical_hazard", NormRefs: []string{"EN ISO 12100 6.3.5.5"},
+			Confidence: "low", Rationale: "Static checklist fallback — LLM nicht verfuegbar.",
+		},
+		{
+			Kind: "hazard", Title: "Hand-Quetschung gegen feste Strukturen beim Hochfahren",
+			Description: "Pruefe Mindestabstand zu festen Strukturen oberhalb der hoechsten Hubposition.",
+			Category: "mechanical_hazard", NormRefs: []string{"EN ISO 13854"},
+			Confidence: "low",
+		},
+		{
+			Kind: "mitigation", Title: "Kriechgeschwindigkeit am Endanschlag (Hubgeraete)",
+			Description: "Hubgeschwindigkeit am Ende der Verfahrbewegung auf <=15 mm/s reduzieren.",
+			NormRefs: []string{"OSHA 29 CFR 1910.217 (Hand-Speed-Konstante)"},
+			Confidence: "low",
+		},
+	}
+	if !hasMechanical {
+		// Trim if not a mechanical context
+		out = out[:1]
+	}
+	return out
+}

ai-compliance-sdk/internal/app/routes.go

@@ -355,117 +355,6 @@ func registerWhistleblowerRoutes(v1 *gin.RouterGroup, h *handlers.WhistleblowerH
 	}
 }
 
-func registerIACERoutes(v1 *gin.RouterGroup, h *handlers.IACEHandler) {
-	iaceRoutes := v1.Group("/iace")
-	{
-		iaceRoutes.GET("/hazard-library", h.ListHazardLibrary)
-		iaceRoutes.GET("/controls-library", h.ListControlsLibrary)
-		iaceRoutes.GET("/norms-library", h.ListNormsLibrary)
-		iaceRoutes.GET("/lifecycle-phases", h.ListLifecyclePhases)
-		iaceRoutes.GET("/roles", h.ListRoles)
-		iaceRoutes.GET("/evidence-types", h.ListEvidenceTypes)
-		iaceRoutes.GET("/protective-measures-library", h.ListProtectiveMeasures)
-		iaceRoutes.GET("/failure-modes", h.ListFailureModes)
-		iaceRoutes.GET("/operational-states", h.ListOperationalStates)
-		iaceRoutes.GET("/component-library", h.ListComponentLibrary)
-		iaceRoutes.GET("/energy-sources", h.ListEnergySources)
-		iaceRoutes.GET("/tags", h.ListTags)
-		iaceRoutes.GET("/hazard-patterns", h.ListHazardPatterns)
-		iaceRoutes.POST("/projects", h.CreateProject)
-		iaceRoutes.GET("/projects", h.ListProjects)
-		iaceRoutes.GET("/projects/:id", h.GetProject)
-		iaceRoutes.PUT("/projects/:id", h.UpdateProject)
-		iaceRoutes.DELETE("/projects/:id", h.ArchiveProject)
-		iaceRoutes.POST("/projects/:id/init-from-profile", h.InitFromProfile)
-		iaceRoutes.POST("/projects/:id/variants", h.CreateVariant)
-		iaceRoutes.GET("/projects/:id/variants", h.ListVariants)
-		iaceRoutes.GET("/projects/:id/variant-gap", h.GetVariantGap)
-		iaceRoutes.POST("/projects/:id/completeness-check", h.CheckCompleteness)
-		iaceRoutes.POST("/projects/:id/components", h.CreateComponent)
-		iaceRoutes.GET("/projects/:id/components", h.ListComponents)
-		iaceRoutes.PUT("/projects/:id/components/:cid", h.UpdateComponent)
-		iaceRoutes.DELETE("/projects/:id/components/:cid", h.DeleteComponent)
-		iaceRoutes.POST("/projects/:id/classify", h.Classify)
-		iaceRoutes.GET("/projects/:id/classifications", h.GetClassifications)
-		iaceRoutes.POST("/projects/:id/classify/:regulation", h.ClassifySingle)
-		iaceRoutes.POST("/projects/:id/hazards", h.CreateHazard)
-		iaceRoutes.GET("/projects/:id/hazards", h.ListHazards)
-		iaceRoutes.PUT("/projects/:id/hazards/:hid", h.UpdateHazard)
-		iaceRoutes.POST("/projects/:id/hazards/suggest", h.SuggestHazards)
-		iaceRoutes.POST("/projects/:id/match-patterns", h.MatchPatterns)
-		iaceRoutes.POST("/projects/:id/parse-narrative", h.ParseNarrative)
-		iaceRoutes.POST("/projects/:id/delta-analysis", h.DeltaAnalysis)
-		iaceRoutes.GET("/projects/:id/fmea/export", h.ExportFMEA)
-		iaceRoutes.POST("/projects/:id/components/:cid/suggest-fms", h.SuggestFailureModes)
-		iaceRoutes.POST("/projects/:id/apply-patterns", h.ApplyPatternResults)
-		iaceRoutes.POST("/projects/:id/hazards/:hid/suggest-measures", h.SuggestMeasuresForHazard)
-		iaceRoutes.POST("/projects/:id/mitigations/:mid/suggest-evidence", h.SuggestEvidenceForMitigation)
-		iaceRoutes.POST("/projects/:id/hazards/:hid/assess", h.AssessRisk)
-		iaceRoutes.GET("/projects/:id/risk-summary", h.GetRiskSummary)
-		iaceRoutes.GET("/projects/:id/suggested-norms", h.SuggestProjectNorms)
-		iaceRoutes.POST("/projects/:id/hazards/:hid/reassess", h.ReassessRisk)
-		iaceRoutes.GET("/projects/:id/mitigations", h.ListProjectMitigations)
-		iaceRoutes.POST("/projects/:id/hazards/:hid/mitigations", h.CreateMitigation)
-		iaceRoutes.DELETE("/projects/:id/mitigations/:mid", h.DeleteMitigation)
-		iaceRoutes.PUT("/mitigations/:mid", h.UpdateMitigation)
-		iaceRoutes.POST("/mitigations/:mid/verify", h.VerifyMitigation)
-		iaceRoutes.POST("/projects/:id/validate-mitigation-hierarchy", h.ValidateMitigationHierarchy)
-		iaceRoutes.POST("/projects/:id/evidence", h.UploadEvidence)
-		iaceRoutes.GET("/projects/:id/evidence", h.ListEvidence)
-		iaceRoutes.POST("/projects/:id/verification-plan", h.CreateVerificationPlan)
-		iaceRoutes.PUT("/verification-plan/:vid", h.UpdateVerificationPlan)
-		iaceRoutes.POST("/verification-plan/:vid/complete", h.CompleteVerification)
-		iaceRoutes.GET("/projects/:id/verifications", h.ListVerificationPlans)
-		iaceRoutes.POST("/projects/:id/verifications", h.CreateVerificationAlias)
-		iaceRoutes.DELETE("/projects/:id/verifications/:vid", h.DeleteVerificationPlan)
-		iaceRoutes.POST("/projects/:id/verifications/:vid/complete", h.CompleteVerificationAlias)
-		iaceRoutes.POST("/projects/:id/tech-file/generate", h.GenerateTechFile)
-		iaceRoutes.GET("/projects/:id/tech-file", h.ListTechFileSections)
-		iaceRoutes.PUT("/projects/:id/tech-file/:section", h.UpdateTechFileSection)
-		iaceRoutes.POST("/projects/:id/tech-file/:section/approve", h.ApproveTechFileSection)
-		iaceRoutes.POST("/projects/:id/tech-file/:section/generate", h.GenerateSingleSection)
-		iaceRoutes.GET("/projects/:id/tech-file/export", h.ExportTechFile)
-		iaceRoutes.POST("/projects/:id/monitoring", h.CreateMonitoringEvent)
-		iaceRoutes.GET("/projects/:id/monitoring", h.ListMonitoringEvents)
-		iaceRoutes.PUT("/projects/:id/monitoring/:eid", h.UpdateMonitoringEvent)
-		iaceRoutes.GET("/projects/:id/audit-trail", h.GetAuditTrail)
-		iaceRoutes.POST("/library-search", h.SearchLibrary)
-		iaceRoutes.GET("/ce-corpus-documents", h.ListCECorpusDocuments)
-		iaceRoutes.POST("/projects/:id/initialize", h.InitializeProject)
-		iaceRoutes.GET("/projects/:id/hazard-blocks", h.GetHazardBlocks)
-		iaceRoutes.POST("/projects/:id/benchmark/import-gt", h.ImportGroundTruth)
-		iaceRoutes.GET("/projects/:id/benchmark", h.RunBenchmark)
-		iaceRoutes.GET("/projects/:id/benchmark/summary", h.GetBenchmarkSummary)
-		iaceRoutes.GET("/projects/:id/hazards/:hid/regulatory-hints", h.EnrichHazardWithRegulations)
-		iaceRoutes.GET("/projects/:id/mitigations/:mid/regulatory-hints", h.EnrichMitigationWithRegulations)
-		iaceRoutes.GET("/projects/:id/regulatory-hints", h.EnrichProjectHazardsBatch)
-		iaceRoutes.POST("/projects/:id/tech-file/:section/enrich", h.EnrichTechFileSection)
-
-		// Production Lines
-		iaceRoutes.POST("/production-lines", h.CreateProductionLine)
-		iaceRoutes.GET("/production-lines", h.ListProductionLines)
-		iaceRoutes.GET("/production-lines/:lid/dashboard", h.GetProductionLineDashboard)
-		iaceRoutes.POST("/production-lines/:lid/stations", h.AddStationToLine)
-		iaceRoutes.DELETE("/production-lines/:lid/stations/:sid", h.RemoveStationFromLine)
-
-		// CE x Compliance Crossover
-		iaceRoutes.GET("/projects/:id/compliance-triggers", h.GetComplianceTriggers)
-		iaceRoutes.GET("/compliance-faq", h.GetComplianceFAQ)
-
-		// Clarifications — aggregated open questions per project
-		iaceRoutes.GET("/projects/:id/clarifications", h.ListClarifications)
-		iaceRoutes.GET("/projects/:id/clarifications.csv", h.ExportClarificationsCSV)
-		iaceRoutes.GET("/projects/:id/clarifications.html", h.ExportClarificationsHTML)
-		iaceRoutes.GET("/projects/:id/clarifications/:cid/detail", h.ListClarificationDetail)
-		iaceRoutes.POST("/projects/:id/clarifications/:cid/answer", h.AnswerClarification)
-		iaceRoutes.POST("/projects/:id/clarifications/:cid/comment", h.PostClarificationComment)
-
-		// Customer-Standard Reuse (migration 031): pull reusable mitigations
-		// across prior projects of the same customer.
-		iaceRoutes.GET("/projects/:id/customer-standards", h.ListCustomerStandardSuggestions)
-		iaceRoutes.POST("/projects/:id/customer-standards/import", h.ImportCustomerStandardSuggestion)
-	}
-}
 
 func registerMaximizerRoutes(v1 *gin.RouterGroup, h *handlers.MaximizerHandlers) {
 	m := v1.Group("/maximizer")

ai-compliance-sdk/internal/app/routes_iace.go

@@ -0,0 +1,136 @@
+package app
+
+// IACE route registration extracted from routes.go (2026-05-21) because
+// routes.go hit the 500-LOC hard cap when the LLM gap-review endpoint
+// (Task #7) was added. Splitting keeps every routes file under the cap
+// without changing behaviour — `registerRoutes` in routes.go still
+// invokes `registerIACERoutes` exactly once at the same point in the
+// startup sequence.
+
+import (
+	"github.com/breakpilot/ai-compliance-sdk/internal/api/handlers"
+	"github.com/gin-gonic/gin"
+)
+
+func registerIACERoutes(v1 *gin.RouterGroup, h *handlers.IACEHandler) {
+	iaceRoutes := v1.Group("/iace")
+	{
+		// Library catalogues (read-only reference data).
+		iaceRoutes.GET("/hazard-library", h.ListHazardLibrary)
+		iaceRoutes.GET("/controls-library", h.ListControlsLibrary)
+		iaceRoutes.GET("/norms-library", h.ListNormsLibrary)
+		iaceRoutes.GET("/lifecycle-phases", h.ListLifecyclePhases)
+		iaceRoutes.GET("/roles", h.ListRoles)
+		iaceRoutes.GET("/evidence-types", h.ListEvidenceTypes)
+		iaceRoutes.GET("/protective-measures-library", h.ListProtectiveMeasures)
+		iaceRoutes.GET("/failure-modes", h.ListFailureModes)
+		iaceRoutes.GET("/operational-states", h.ListOperationalStates)
+		iaceRoutes.GET("/component-library", h.ListComponentLibrary)
+		iaceRoutes.GET("/energy-sources", h.ListEnergySources)
+		iaceRoutes.GET("/tags", h.ListTags)
+		iaceRoutes.GET("/hazard-patterns", h.ListHazardPatterns)
+
+		// Project CRUD.
+		iaceRoutes.POST("/projects", h.CreateProject)
+		iaceRoutes.GET("/projects", h.ListProjects)
+		iaceRoutes.GET("/projects/:id", h.GetProject)
+		iaceRoutes.PUT("/projects/:id", h.UpdateProject)
+		iaceRoutes.DELETE("/projects/:id", h.ArchiveProject)
+		iaceRoutes.POST("/projects/:id/init-from-profile", h.InitFromProfile)
+		iaceRoutes.POST("/projects/:id/variants", h.CreateVariant)
+		iaceRoutes.GET("/projects/:id/variants", h.ListVariants)
+		iaceRoutes.GET("/projects/:id/variant-gap", h.GetVariantGap)
+		iaceRoutes.POST("/projects/:id/completeness-check", h.CheckCompleteness)
+
+		// Components.
+		iaceRoutes.POST("/projects/:id/components", h.CreateComponent)
+		iaceRoutes.GET("/projects/:id/components", h.ListComponents)
+		iaceRoutes.PUT("/projects/:id/components/:cid", h.UpdateComponent)
+		iaceRoutes.DELETE("/projects/:id/components/:cid", h.DeleteComponent)
+
+		// Classification + hazards.
+		iaceRoutes.POST("/projects/:id/classify", h.Classify)
+		iaceRoutes.GET("/projects/:id/classifications", h.GetClassifications)
+		iaceRoutes.POST("/projects/:id/classify/:regulation", h.ClassifySingle)
+		iaceRoutes.POST("/projects/:id/hazards", h.CreateHazard)
+		iaceRoutes.GET("/projects/:id/hazards", h.ListHazards)
+		iaceRoutes.PUT("/projects/:id/hazards/:hid", h.UpdateHazard)
+		iaceRoutes.POST("/projects/:id/hazards/suggest", h.SuggestHazards)
+		iaceRoutes.POST("/projects/:id/match-patterns", h.MatchPatterns)
+		iaceRoutes.POST("/projects/:id/parse-narrative", h.ParseNarrative)
+		iaceRoutes.POST("/projects/:id/delta-analysis", h.DeltaAnalysis)
+		iaceRoutes.POST("/projects/:id/llm-gap-review", h.LLMGapReview)
+		iaceRoutes.GET("/projects/:id/fmea/export", h.ExportFMEA)
+		iaceRoutes.POST("/projects/:id/components/:cid/suggest-fms", h.SuggestFailureModes)
+		iaceRoutes.POST("/projects/:id/apply-patterns", h.ApplyPatternResults)
+		iaceRoutes.POST("/projects/:id/hazards/:hid/suggest-measures", h.SuggestMeasuresForHazard)
+		iaceRoutes.POST("/projects/:id/mitigations/:mid/suggest-evidence", h.SuggestEvidenceForMitigation)
+		iaceRoutes.POST("/projects/:id/hazards/:hid/assess", h.AssessRisk)
+		iaceRoutes.GET("/projects/:id/risk-summary", h.GetRiskSummary)
+		iaceRoutes.GET("/projects/:id/suggested-norms", h.SuggestProjectNorms)
+		iaceRoutes.POST("/projects/:id/hazards/:hid/reassess", h.ReassessRisk)
+
+		// Mitigations + evidence + verification.
+		iaceRoutes.GET("/projects/:id/mitigations", h.ListProjectMitigations)
+		iaceRoutes.POST("/projects/:id/hazards/:hid/mitigations", h.CreateMitigation)
+		iaceRoutes.DELETE("/projects/:id/mitigations/:mid", h.DeleteMitigation)
+		iaceRoutes.PUT("/mitigations/:mid", h.UpdateMitigation)
+		iaceRoutes.POST("/mitigations/:mid/verify", h.VerifyMitigation)
+		iaceRoutes.POST("/projects/:id/validate-mitigation-hierarchy", h.ValidateMitigationHierarchy)
+		iaceRoutes.POST("/projects/:id/evidence", h.UploadEvidence)
+		iaceRoutes.GET("/projects/:id/evidence", h.ListEvidence)
+		iaceRoutes.POST("/projects/:id/verification-plan", h.CreateVerificationPlan)
+		iaceRoutes.PUT("/verification-plan/:vid", h.UpdateVerificationPlan)
+		iaceRoutes.POST("/verification-plan/:vid/complete", h.CompleteVerification)
+		iaceRoutes.GET("/projects/:id/verifications", h.ListVerificationPlans)
+		iaceRoutes.POST("/projects/:id/verifications", h.CreateVerificationAlias)
+		iaceRoutes.DELETE("/projects/:id/verifications/:vid", h.DeleteVerificationPlan)
+		iaceRoutes.POST("/projects/:id/verifications/:vid/complete", h.CompleteVerificationAlias)
+
+		// Tech file + monitoring + audit.
+		iaceRoutes.POST("/projects/:id/tech-file/generate", h.GenerateTechFile)
+		iaceRoutes.GET("/projects/:id/tech-file", h.ListTechFileSections)
+		iaceRoutes.PUT("/projects/:id/tech-file/:section", h.UpdateTechFileSection)
+		iaceRoutes.POST("/projects/:id/tech-file/:section/approve", h.ApproveTechFileSection)
+		iaceRoutes.POST("/projects/:id/tech-file/:section/generate", h.GenerateSingleSection)
+		iaceRoutes.GET("/projects/:id/tech-file/export", h.ExportTechFile)
+		iaceRoutes.POST("/projects/:id/monitoring", h.CreateMonitoringEvent)
+		iaceRoutes.GET("/projects/:id/monitoring", h.ListMonitoringEvents)
+		iaceRoutes.PUT("/projects/:id/monitoring/:eid", h.UpdateMonitoringEvent)
+		iaceRoutes.GET("/projects/:id/audit-trail", h.GetAuditTrail)
+
+		// Library + corpus + benchmark.
+		iaceRoutes.POST("/library-search", h.SearchLibrary)
+		iaceRoutes.GET("/ce-corpus-documents", h.ListCECorpusDocuments)
+		iaceRoutes.POST("/projects/:id/initialize", h.InitializeProject)
+		iaceRoutes.GET("/projects/:id/hazard-blocks", h.GetHazardBlocks)
+		iaceRoutes.POST("/projects/:id/benchmark/import-gt", h.ImportGroundTruth)
+		iaceRoutes.GET("/projects/:id/benchmark", h.RunBenchmark)
+		iaceRoutes.GET("/projects/:id/benchmark/summary", h.GetBenchmarkSummary)
+
+		// Regulatory enrichment.
+		iaceRoutes.GET("/projects/:id/hazards/:hid/regulatory-hints", h.EnrichHazardWithRegulations)
+		iaceRoutes.GET("/projects/:id/mitigations/:mid/regulatory-hints", h.EnrichMitigationWithRegulations)
+		iaceRoutes.GET("/projects/:id/regulatory-hints", h.EnrichProjectHazardsBatch)
+		iaceRoutes.POST("/projects/:id/tech-file/:section/enrich", h.EnrichTechFileSection)
+
+		// Production lines.
+		iaceRoutes.POST("/production-lines", h.CreateProductionLine)
+		iaceRoutes.GET("/production-lines", h.ListProductionLines)
+		iaceRoutes.GET("/production-lines/:lid/dashboard", h.GetProductionLineDashboard)
+		iaceRoutes.POST("/production-lines/:lid/stations", h.AddStationToLine)
+		iaceRoutes.DELETE("/production-lines/:lid/stations/:sid", h.RemoveStationFromLine)
+
+		// CE x Compliance crossover + clarifications + customer standards.
+		iaceRoutes.GET("/projects/:id/compliance-triggers", h.GetComplianceTriggers)
+		iaceRoutes.GET("/compliance-faq", h.GetComplianceFAQ)
+		iaceRoutes.GET("/projects/:id/clarifications", h.ListClarifications)
+		iaceRoutes.GET("/projects/:id/clarifications.csv", h.ExportClarificationsCSV)
+		iaceRoutes.GET("/projects/:id/clarifications.html", h.ExportClarificationsHTML)
+		iaceRoutes.GET("/projects/:id/clarifications/:cid/detail", h.ListClarificationDetail)
+		iaceRoutes.POST("/projects/:id/clarifications/:cid/answer", h.AnswerClarification)
+		iaceRoutes.POST("/projects/:id/clarifications/:cid/comment", h.PostClarificationComment)
+		iaceRoutes.GET("/projects/:id/customer-standards", h.ListCustomerStandardSuggestions)
+		iaceRoutes.POST("/projects/:id/customer-standards/import", h.ImportCustomerStandardSuggestion)
+	}
+}

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

@@ -81,6 +81,10 @@ func (e *DocumentExporter) ExportPDF(
 		e.pdfClassifications(pdf, classifications)
 	}
 
+	// --- Quellen & Lizenzen (Stufe 4 Attribution-Renderer, Task #29) ---
+	pdf.AddPage()
+	e.pdfSourcesAppendix(pdf, hazards, mitigations)
+
 	// --- Footer on every page ---
 	pdf.SetFooterFunc(func() {
 		pdf.SetY(-15)

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

@@ -0,0 +1,134 @@
+package iace
+
+// Sources & Licenses appendix for the IACE Tech-File PDF export.
+// Stufe 4 of the Attribution Renderer (Task #29).
+//
+// The IACE engine generates hazards from BreakPilot Pattern-IDs that
+// themselves cite ISO 12100, EN 13849, EN ISO 13855 etc. Those norm
+// identifiers are R3 (DIN/EN copyright — identifier-only). The
+// pattern-engine output itself is R3 (BreakPilot own work). OSHA values
+// surfaced via the minimum-distance library are R1 (US Federal PD).
+//
+// This appendix aggregates what the Tech-File ACTUALLY cited and shows
+// it grouped by license rule with the mandatory disclaimer that the
+// per-export footer cannot be replaced by a pauschal Impressum-Hinweis.
+
+import (
+	"sort"
+	"strings"
+
+	"github.com/jung-kurt/gofpdf"
+)
+
+// pdfSourcesAppendix renders the "Quellen & Lizenzen" appendix page.
+// Called by ExportPDF after the regulatory classifications block.
+func (e *DocumentExporter) pdfSourcesAppendix(pdf *gofpdf.Fpdf, hazards []Hazard, mitigations []Mitigation) {
+	pdf.SetFont("Helvetica", "B", 14)
+	pdf.SetTextColor(124, 58, 237)
+	pdf.CellFormat(0, 10, "Quellen und Lizenzen", "", 1, "L", false, 0, "")
+	pdf.Ln(2)
+
+	pdf.SetFont("Helvetica", "", 9)
+	pdf.SetTextColor(80, 80, 80)
+	intro := "Diese Risikobeurteilung verwendet die deterministische BreakPilot IACE " +
+		"Pattern-Engine sowie zitierte Sicherheitsnormen. Die folgende Aufstellung " +
+		"listet die konkret in diesem Dokument zitierten Quellen mit ihrer Lizenzregel."
+	pdf.MultiCell(0, 5, intro, "", "L", false)
+	pdf.Ln(3)
+
+	pdf.SetFont("Helvetica", "B", 10)
+	pdf.SetTextColor(0, 0, 0)
+	pdf.CellFormat(0, 7, "R3 — BreakPilot Pattern-Engine (Eigenwerk, Identifier-Verweis)", "", 1, "L", false, 0, "")
+	pdf.SetFont("Helvetica", "", 9)
+	pdf.SetTextColor(60, 60, 60)
+	pdf.MultiCell(0, 5,
+		"Alle in diesem Dokument referenzierten HP-XXXX-Identifier stammen aus der "+
+			"BreakPilot IACE Pattern-Library (Eigenwerk). Keine externe Lizenz-Attribution "+
+			"erforderlich.", "", "L", false)
+	pdf.Ln(3)
+
+	norms := extractCitedNorms(hazards, mitigations)
+	if len(norms) > 0 {
+		pdf.SetFont("Helvetica", "B", 10)
+		pdf.SetTextColor(0, 0, 0)
+		pdf.CellFormat(0, 7, "R3 — Sicherheitsnormen (DIN/EN/ISO/IEC, Identifier-Verweis)", "", 1, "L", false, 0, "")
+		pdf.SetFont("Helvetica", "", 9)
+		pdf.SetTextColor(60, 60, 60)
+		pdf.MultiCell(0, 5,
+			"DIN-/EN-/ISO-/IEC-Normen unterliegen dem Urheberrecht der jeweiligen "+
+				"Normungsorganisation. In diesem Dokument werden Normen ausschliesslich "+
+				"als Identifier (Norm-Nummer und Abschnitt) zitiert; kein Volltext aus "+
+				"diesen Normen wurde reproduziert. Konkret zitiert:", "", "L", false)
+		pdf.Ln(1)
+		for _, n := range norms {
+			pdf.CellFormat(0, 5, "  • "+n, "", 1, "L", false, 0, "")
+		}
+		pdf.Ln(2)
+	}
+
+	pdf.SetFont("Helvetica", "B", 10)
+	pdf.SetTextColor(0, 0, 0)
+	pdf.CellFormat(0, 7, "R1 — Hoheitsrecht / Public Domain (woertlich uebernehmbar)", "", 1, "L", false, 0, "")
+	pdf.SetFont("Helvetica", "", 9)
+	pdf.SetTextColor(60, 60, 60)
+	pdf.MultiCell(0, 5,
+		"Soweit Werte aus US Federal Code (OSHA 29 CFR Subpart O) oder EU-Recht "+
+			"(Maschinenverordnung 2023/1230, AI Act 2024/1689) referenziert werden, "+
+			"sind diese als R1 woertlich uebernehmbar. Keine Attribution-Pflicht.", "", "L", false)
+	pdf.Ln(4)
+
+	pdf.SetFont("Helvetica", "I", 8)
+	pdf.SetTextColor(120, 120, 120)
+	pdf.MultiCell(0, 4,
+		"Hinweis: Pauschalvermerke in AGB oder Impressum reichen rechtlich nicht — "+
+			"die werknahe Attribution erfolgt durch diese Quellenseite. Vollstaendiges "+
+			"Quellenverzeichnis aller im BreakPilot-System verwendeten Quellen siehe "+
+			"/sdk/licenses im Web-Frontend.", "", "L", false)
+}
+
+// extractCitedNorms scans hazard descriptions + scenario fields for
+// recognised norm identifiers. The detection is intentionally narrow:
+// only well-known prefixes (EN/ISO/IEC/DIN) and only when followed by
+// digits, so free-form prose is not turned into spurious citations.
+func extractCitedNorms(hz []Hazard, mt []Mitigation) []string {
+	seen := make(map[string]bool)
+	consider := func(s string) {
+		fields := strings.FieldsFunc(s, func(r rune) bool {
+			return r == ' ' || r == ',' || r == ';' || r == '\n' || r == ';' || r == '('
+		})
+		for i := 0; i < len(fields)-1; i++ {
+			head := strings.ToUpper(strings.TrimSpace(fields[i]))
+			next := strings.TrimSpace(fields[i+1])
+			if !(head == "EN" || head == "ISO" || head == "IEC" || head == "DIN") {
+				continue
+			}
+			if next == "" {
+				continue
+			}
+			// Accept "ISO 12100", "EN 13849-1", "DIN EN 60204-1" etc.
+			if next[0] >= '0' && next[0] <= '9' {
+				seen[head+" "+next] = true
+			} else if head == "DIN" && (strings.HasPrefix(strings.ToUpper(next), "EN") || strings.HasPrefix(strings.ToUpper(next), "ISO")) && i+2 < len(fields) {
+				third := strings.TrimSpace(fields[i+2])
+				if third != "" && third[0] >= '0' && third[0] <= '9' {
+					seen[head+" "+next+" "+third] = true
+				}
+			}
+		}
+	}
+	for _, h := range hz {
+		consider(h.Description)
+		consider(h.Scenario)
+		consider(h.PossibleHarm)
+	}
+	for _, m := range mt {
+		consider(m.Description)
+		consider(m.Name)
+	}
+	out := make([]string, 0, len(seen))
+	for k := range seen {
+		out = append(out, k)
+	}
+	sort.Strings(out)
+	return out
+}