feat(db): mesh data model — meshes, members, invites, audit log

- pgSchema "mesh" with 4 tables isolating the peer mesh domain
- Enums: visibility, transport, tier, role
- audit_log is metadata-only (E2E encryption enforced at broker/client)
- Cascade on mesh delete, soft-delete via archivedAt/revokedAt

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/billing/src/config/features.ts

@@ -0,0 +1,45 @@
+import { PricingPlanType } from "../types";
+
+const FREE_FEATURES = {
+  SYNC: "SYNC",
+  BASIC_SUPPORT: "BASIC_SUPPORT",
+  LIMITED_STORAGE: "LIMITED_STORAGE",
+  EMAIL_NOTIFICATIONS: "EMAIL_NOTIFICATIONS",
+  BASIC_REPORTS: "BASIC_REPORTS",
+} as const;
+
+const PREMIUM_FEATURES = {
+  ...FREE_FEATURES,
+  ADVANCED_SYNC: "ADVANCED_SYNC",
+  PRIORITY_SUPPORT: "PRIORITY_SUPPORT",
+  MORE_STORAGE: "MORE_STORAGE",
+  TEAM_COLLABORATION: "TEAM_COLLABORATION",
+  SMS_NOTIFICATIONS: "SMS_NOTIFICATIONS",
+  ADVANCED_REPORTS: "ADVANCED_REPORTS",
+} as const;
+
+const ENTERPRISE_FEATURES = {
+  ...PREMIUM_FEATURES,
+  UNLIMITED_STORAGE: "UNLIMITED_STORAGE",
+  CUSTOM_BRANDING: "CUSTOM_BRANDING",
+  DEDICATED_SUPPORT: "DEDICATED_SUPPORT",
+  API_ACCESS: "API_ACCESS",
+  USER_ROLES: "USER_ROLES",
+  AUDIT_LOGS: "AUDIT_LOGS",
+  SINGLE_SIGN_ON: "SINGLE_SIGN_ON",
+  ADVANCED_ANALYTICS: "ADVANCED_ANALYTICS",
+} as const;
+
+export const FEATURES = {
+  [PricingPlanType.FREE]: FREE_FEATURES,
+  [PricingPlanType.PREMIUM]: PREMIUM_FEATURES,
+  [PricingPlanType.ENTERPRISE]: ENTERPRISE_FEATURES,
+} as const;
+
+export type FreeFeature = (typeof FREE_FEATURES)[keyof typeof FREE_FEATURES];
+export type PremiumFeature =
+  (typeof PREMIUM_FEATURES)[keyof typeof PREMIUM_FEATURES];
+export type EnterpriseFeature =
+  (typeof ENTERPRISE_FEATURES)[keyof typeof ENTERPRISE_FEATURES];
+
+export type Feature = FreeFeature | PremiumFeature | EnterpriseFeature;