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>

.context/turbostarter-framework-context/sections/web/stack.md

@@ -0,0 +1,72 @@
+---
+title: Tech Stack
+description: A detailed look at the technical details.
+url: /docs/web/stack
+---
+
+# Tech Stack
+
+## Turborepo
+
+[Turborepo](https://turbo.build/) is a monorepo tool that helps you manage your project's dependencies and scripts. We chose a monorepo setup to make it easier to manage the structure of different features and enable code sharing between different packages.
+
+<Card href="https://turbo.build/" title="Turborepo - Make Ship Happen" description="turbo.build" icon={<Turborepo />} />
+
+## Next.js
+
+[Next.js](https://nextjs.org) is one of the most popular [React](https://react.dev) frameworks that enables server-side rendering, static site generation, and more. We chose Next.js for its flexibility and ease of use. We're also using it to host our serverless API.
+
+<Cards>
+  <Card href="https://react.dev" title="React" description="react.dev" icon={<React />} />
+
+  <Card href="https://nextjs.org" title="Next.js" description="nextjs.org" icon={<Next />} />
+</Cards>
+
+## Hono & React Query
+
+[Hono](https://hono.dev) is a small, simple, and ultrafast web framework for the edge. It provides tools to help you build APIs and web applications faster. It includes an RPC client for making type-safe function calls from the frontend. We use Hono to build our serverless API endpoints.
+
+To make data fetching and caching from our API easy and reliable, we pair Hono with [React Query](https://tanstack.com/query/latest). It helps manage asynchronous data, caching, and state synchronization between the client and backend, delivering a fast and seamless UX.
+
+<Cards>
+  <Card href="https://hono.dev" title="Hono" description="hono.dev" icon={<Hono />} />
+
+  <Card
+    href="https://tanstack.com/query/latest"
+    title="React Query"
+    description="tanstack.com"
+    icon={
+      <img src="/images/icons/tanstack.png" alt="" width={32} height={32} />
+    }
+  />
+</Cards>
+
+## Better Auth
+
+[Better Auth](https://www.better-auth.com) is a modern authentication library for fullstack applications. It provides ready-to-use snippets for features like email/password login, magic links, OAuth providers, and more. We use Better Auth to handle all authentication flows in our application.
+
+<Card href="https://www.better-auth.com" title="Better Auth" description="better-auth.com" icon={<BetterAuth />} />
+
+## Tailwind CSS
+
+[Tailwind CSS](https://tailwindcss.com) is a utility-first CSS framework that helps you build custom designs without writing any CSS. We also use [Radix UI](https://radix-ui.com) for our headless components library and [shadcn/ui](https://ui.shadcn.com), which enables you to generate pre-designed components with a single command.
+
+<Cards className="grid-cols-2 sm:grid-cols-3">
+  <Card href="https://tailwindcss.com" title="Tailwind CSS" description="tailwindcss.com" icon={<Tailwind />} />
+
+  <Card href="https://radix-ui.com" title="Radix UI" description="radix-ui.com" icon={<Radix />} />
+
+  <Card href="https://ui.shadcn.com" title="shadcn/ui" description="ui.shadcn.com" icon={<Shadcn />} />
+</Cards>
+
+## Drizzle
+
+[Drizzle](https://orm.drizzle.team/) is a super fast [ORM](https://orm.drizzle.team/docs/overview) (Object-Relational Mapping) tool for databases. It helps manage databases, generate TypeScript types from your schema, and run queries in a fully type-safe way.
+
+We use [PostgreSQL](https://www.postgresql.org) as our default database, but thanks to Drizzle's flexibility, you can easily switch to MySQL, SQLite or any [other supported database](https://orm.drizzle.team/docs/connect-overview) by updating a few configuration lines.
+
+<Cards>
+  <Card href="https://orm.drizzle.team/" title="Drizzle" description="orm.drizzle.team" icon={<Drizzle />} />
+
+  <Card href="https://www.postgresql.org" title="PostgreSQL" description="postgresql.org" icon={<Postgres />} />
+</Cards>