feat(settings): Settings page with email, webhooks, notifications, profile [FASE-8]

- SystemConfig model + migration b033 for runtime key-value config
- GET/PATCH /system/email-config + POST /system/email-test (admin only)
- email_service reads SMTP config from DB (overrides .env)
- Webhooks now accessible to red_lead/blue_lead + admin
- GET /users/me already existed; /users/me/preferences already working
- SettingsPage with 4 role-aware tabs:
  * Profile & Jira: jira_account_id, user info
  * Notifications: role-specific email/in-app toggles (12 prefs)
  * Webhooks: full CRUD + test ping (leads + admin)
  * Email/SMTP: enable toggle, server config, test email (admin only)
- Added /settings route (all authenticated users)
- Settings link added to Sidebar

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

frontend/src/api/settings.ts

@@ -0,0 +1,147 @@
+import client from "./client";
+
+// ---------------------------------------------------------------------------
+// Email / SMTP config (admin only)
+// ---------------------------------------------------------------------------
+
+export interface EmailConfigOut {
+  enabled: boolean;
+  host: string;
+  port: number;
+  username: string;
+  from_email: string;
+  use_tls: boolean;
+}
+
+export interface EmailConfigUpdate {
+  enabled?: boolean;
+  host?: string;
+  port?: number;
+  username?: string;
+  password?: string;
+  from_email?: string;
+  use_tls?: boolean;
+}
+
+export async function getEmailConfig(): Promise<EmailConfigOut> {
+  const { data } = await client.get<EmailConfigOut>("/system/email-config");
+  return data;
+}
+
+export async function updateEmailConfig(payload: EmailConfigUpdate): Promise<EmailConfigOut> {
+  const { data } = await client.patch<EmailConfigOut>("/system/email-config", payload);
+  return data;
+}
+
+export async function sendTestEmail(to: string): Promise<{ detail: string }> {
+  const { data } = await client.post<{ detail: string }>("/system/email-test", { to });
+  return data;
+}
+
+// ---------------------------------------------------------------------------
+// Webhook config (admin + leads)
+// ---------------------------------------------------------------------------
+
+export interface WebhookOut {
+  id: string;
+  name: string;
+  url: string;
+  secret: string | null;
+  events: string[];
+  is_active: boolean;
+  created_at: string | null;
+  last_triggered_at: string | null;
+  failure_count: number;
+}
+
+export interface WebhookCreate {
+  name: string;
+  url: string;
+  secret?: string;
+  events: string[];
+  is_active?: boolean;
+}
+
+export interface WebhookUpdate {
+  name?: string;
+  url?: string;
+  secret?: string;
+  events?: string[];
+  is_active?: boolean;
+}
+
+export async function getWebhooks(): Promise<WebhookOut[]> {
+  const { data } = await client.get<WebhookOut[]>("/webhooks");
+  return data;
+}
+
+export async function createWebhook(payload: WebhookCreate): Promise<WebhookOut> {
+  const { data } = await client.post<WebhookOut>("/webhooks", payload);
+  return data;
+}
+
+export async function updateWebhook(id: string, payload: WebhookUpdate): Promise<WebhookOut> {
+  const { data } = await client.patch<WebhookOut>(`/webhooks/${id}`, payload);
+  return data;
+}
+
+export async function deleteWebhook(id: string): Promise<void> {
+  await client.delete(`/webhooks/${id}`);
+}
+
+export async function testWebhook(id: string): Promise<{ detail: string }> {
+  const { data } = await client.post<{ detail: string }>(`/webhooks/${id}/test`);
+  return data;
+}
+
+// ---------------------------------------------------------------------------
+// User preferences (all users)
+// ---------------------------------------------------------------------------
+
+export interface NotificationPreferences {
+  // Universal
+  email_on_test_validated: boolean;
+  email_on_test_rejected: boolean;
+  email_on_campaign_completed: boolean;
+  email_on_new_mitre_techniques: boolean;
+  email_on_stale_coverage: boolean;
+  in_app_all: boolean;
+  // Tech + leads
+  email_on_assigned_to_campaign?: boolean;
+  email_on_test_state_change?: boolean;
+  // Leads only
+  email_on_all_team_validations?: boolean;
+  email_on_webhook_failures?: boolean;
+  // Admin only
+  email_on_new_users?: boolean;
+  email_on_system_errors?: boolean;
+}
+
+export interface UserPreferencesUpdate {
+  notification_preferences?: Partial<NotificationPreferences>;
+  jira_account_id?: string | null;
+}
+
+export interface UserMeOut {
+  id: string;
+  username: string;
+  email: string | null;
+  role: string;
+  is_active: boolean;
+  must_change_password: boolean;
+  created_at: string | null;
+  last_login: string | null;
+  notification_preferences: NotificationPreferences | null;
+  jira_account_id: string | null;
+}
+
+export async function getMe(): Promise<UserMeOut> {
+  const { data } = await client.get<UserMeOut>("/users/me");
+  return data;
+}
+
+export async function updateMyPreferences(payload: UserPreferencesUpdate): Promise<UserMeOut> {
+  const { data } = await client.patch<UserMeOut>("/users/me/preferences", payload);
+  return data;
+}
+