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/monitoring/mobile/src/providers/posthog/env.ts

@@ -0,0 +1,29 @@
+/* eslint-disable turbo/no-undeclared-env-vars */
+import { defineEnv } from "envin";
+import * as z from "zod";
+
+import { envConfig } from "@turbostarter/shared/constants";
+
+import type { Preset } from "envin/types";
+
+export const preset = {
+  id: "posthog",
+  clientPrefix: "EXPO_PUBLIC_",
+  client: {
+    EXPO_PUBLIC_POSTHOG_KEY: z.string(),
+    EXPO_PUBLIC_POSTHOG_HOST: z
+      .string()
+      .optional()
+      .default("https://us.i.posthog.com"),
+  },
+} as const satisfies Preset;
+
+export const env = defineEnv({
+  ...envConfig,
+  ...preset,
+  env: {
+    ...process.env,
+    EXPO_PUBLIC_POSTHOG_KEY: process.env.EXPO_PUBLIC_POSTHOG_KEY,
+    EXPO_PUBLIC_POSTHOG_HOST: process.env.EXPO_PUBLIC_POSTHOG_HOST,
+  },
+});

packages/monitoring/mobile/src/providers/posthog/index.ts

@@ -0,0 +1,39 @@
+import { PostHog } from "posthog-react-native";
+
+import { env } from "./env";
+
+import type { MonitoringProviderStrategy } from "@turbostarter/monitoring";
+
+let client: PostHog | null = null;
+
+const getClient = () => {
+  client ??= new PostHog(env.EXPO_PUBLIC_POSTHOG_KEY, {
+    host: env.EXPO_PUBLIC_POSTHOG_HOST,
+    errorTracking: {
+      autocapture: {
+        uncaughtExceptions: true,
+        unhandledRejections: true,
+        console: ["error", "warn"],
+      },
+    },
+  });
+  return client;
+};
+
+export const { captureException, identify, initialize } = {
+  captureException: (exception) => {
+    const posthog = getClient();
+    posthog.captureException(exception);
+  },
+  identify: <T extends { id: string }>(user: T | null) => {
+    const posthog = getClient();
+    if (user) {
+      posthog.identify(user.id);
+    } else {
+      posthog.reset();
+    }
+  },
+  initialize: () => {
+    /* PostHog is initialized in the app */
+  },
+} satisfies MonitoringProviderStrategy;