[FEAT] Services API, Webhook, Whistleblowing, Normative + integrazioni

Sprint completo — prodotto presentation-ready:

Services API (read-only, API Key + scope):
- GET /api/services/status|compliance-summary|risks-feed|incidents-feed
- GET /api/services/controls-status|assets-critical|suppliers-risk|policies-approved
- GET /api/services/openapi (spec OpenAPI 3.0.3 JSON)

Webhook Outbound (Stripe-like HMAC-SHA256):
- CRUD api_keys + webhook_subscriptions (Settings → 2 nuovi tab)
- WebhookService: retry 3x backoff (0s/5min/30min), delivery log
- Trigger auto in IncidentController, RiskController, PolicyController
- Delivery log, test ping, processRetry

Nuovi moduli:
- WhistleblowingController (Art.32 NIS2): anonimato garantito, timeline, token tracking
- NormativeController: feed NIS2/ACN/DORA con ACK tracciato per audit

Frontend:
- whistleblowing.html: form submit anonimo/firmato + gestione CISO
- normative.html: feed con presa visione documentata + progress bar ACK
- public/docs/api.html: documentazione API dark theme (Swagger-like)
- settings.html: tab API Keys + tab Webhook
- integrations/: guide per lg231, SustainAI, AllRisk, SIEM (widget + codice)
- Sidebar: Segnalazioni + Normative aggiunte a common.js

DB: migration 007 (api_keys, webhook_subscriptions, webhook_deliveries),
    008 (whistleblowing_reports + timeline),
    009 (normative_updates + normative_ack + seed NIS2/ACN/DORA/ISO)

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

application/controllers/PolicyController.php

@@ -7,6 +7,7 @@
 
 require_once __DIR__ . '/BaseController.php';
 require_once APP_PATH . '/services/AIService.php';
+require_once APP_PATH . '/services/WebhookService.php';
 
 class PolicyController extends BaseController
 {
@@ -119,6 +120,19 @@ class PolicyController extends BaseController
         ], 'id = ? AND organization_id = ?', [$id, $this->getCurrentOrgId()]);
 
         $this->logAudit('policy_approved', 'policy', $id);
+
+        // Dispatch webhook policy.approved
+        try {
+            $policy = Database::fetchOne('SELECT * FROM policies WHERE id = ?', [$id]);
+            (new WebhookService())->dispatch(
+                $this->getCurrentOrgId(),
+                'policy.approved',
+                WebhookService::policyPayload($policy)
+            );
+        } catch (Throwable $e) {
+            error_log('[WEBHOOK] dispatch error: ' . $e->getMessage());
+        }
+
         $this->jsonSuccess(null, 'Policy approvata');
     }