feat(iace): integrate ISO 12100 machine risk model with 4-factor assessment

Add dual-mode risk engine: legacy S×E×P (avoidance=0) and ISO mode S×F×P×A
(avoidance>=1) with new thresholds (low/medium/high/very_high/not_acceptable).

- 150+ hazard library entries across 28 categories incl. physical hazards
  (mechanical, electrical, thermal, pneumatic/hydraulic, noise/vibration,
  ergonomic, material/environmental)
- 160-entry protective measures library with 3-step hierarchy validation
  (design → protective → information)
- 25 lifecycle phases, 20 affected person roles, 50 evidence types
- 10 verification methods (expanded from 7)
- New API endpoints: lifecycle-phases, roles, evidence-types,
  protective-measures-library, validate-mitigation-hierarchy
- DB migrations 018+019 for extended schema
- Frontend: 4-slider risk assessment, hierarchy warnings, measures library modal
- MkDocs wiki updated with ISO mode docs and legal notice (no norm text)

All content uses original wording — norms referenced as methodology only.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ai-compliance-sdk/migrations/018_iace_iso12100.sql

@@ -0,0 +1,58 @@
+-- Migration 018: ISO 12100 Machine Risk Model Extension for IACE
+-- Adds lifecycle phases, extended hazard fields, and protective measures metadata.
+
+-- ============================================================================
+-- 1. Extend iace_hazards with ISO 12100 fields
+-- ============================================================================
+
+ALTER TABLE iace_hazards ADD COLUMN IF NOT EXISTS machine_module TEXT DEFAULT '';
+ALTER TABLE iace_hazards ADD COLUMN IF NOT EXISTS function TEXT DEFAULT '';
+ALTER TABLE iace_hazards ADD COLUMN IF NOT EXISTS lifecycle_phase TEXT DEFAULT '';
+ALTER TABLE iace_hazards ADD COLUMN IF NOT EXISTS hazardous_zone TEXT DEFAULT '';
+ALTER TABLE iace_hazards ADD COLUMN IF NOT EXISTS trigger_event TEXT DEFAULT '';
+ALTER TABLE iace_hazards ADD COLUMN IF NOT EXISTS affected_person TEXT DEFAULT '';
+ALTER TABLE iace_hazards ADD COLUMN IF NOT EXISTS possible_harm TEXT DEFAULT '';
+ALTER TABLE iace_hazards ADD COLUMN IF NOT EXISTS sub_category TEXT DEFAULT '';
+ALTER TABLE iace_hazards ADD COLUMN IF NOT EXISTS review_status TEXT DEFAULT 'draft';
+
+-- ============================================================================
+-- 2. Extend iace_hazard_library with ISO 12100 metadata
+-- ============================================================================
+
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS sub_category TEXT DEFAULT '';
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS default_exposure INT DEFAULT 3;
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS default_avoidance INT DEFAULT 3;
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS typical_causes JSONB DEFAULT '[]';
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS typical_harm TEXT DEFAULT '';
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS relevant_lifecycle_phases JSONB DEFAULT '[]';
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS recommended_measures_design JSONB DEFAULT '[]';
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS recommended_measures_technical JSONB DEFAULT '[]';
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS recommended_measures_information JSONB DEFAULT '[]';
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS suggested_evidence JSONB DEFAULT '[]';
+ALTER TABLE iace_hazard_library ADD COLUMN IF NOT EXISTS related_keywords JSONB DEFAULT '[]';
+
+-- ============================================================================
+-- 3. Reference table: Lifecycle phases (DE/EN labels)
+-- ============================================================================
+
+CREATE TABLE IF NOT EXISTS iace_lifecycle_phases (
+    id TEXT PRIMARY KEY,
+    label_de TEXT NOT NULL,
+    label_en TEXT NOT NULL,
+    sort_order INT NOT NULL DEFAULT 0
+);
+
+INSERT INTO iace_lifecycle_phases (id, label_de, label_en, sort_order) VALUES
+    ('transport', 'Transport', 'Transport', 1),
+    ('assembly', 'Montage', 'Assembly', 2),
+    ('commissioning', 'Inbetriebnahme', 'Commissioning', 3),
+    ('setup_teach', 'Einrichten / Teach', 'Setup / Teach', 4),
+    ('normal_operation', 'Normalbetrieb', 'Normal Operation', 5),
+    ('special_operation', 'Sonderbetrieb', 'Special Operation', 6),
+    ('cleaning', 'Reinigung', 'Cleaning', 7),
+    ('maintenance', 'Wartung', 'Maintenance', 8),
+    ('fault_clearing', 'Stoerungsbeseitigung', 'Fault Clearing', 9),
+    ('changeover', 'Umruestung', 'Changeover', 10),
+    ('decommissioning', 'Ausserbetriebnahme', 'Decommissioning', 11),
+    ('disposal', 'Demontage / Entsorgung', 'Dismantling / Disposal', 12)
+ON CONFLICT (id) DO NOTHING;