---

name: smbcloud-auth

#description: Use when building, debugging, or extending smbCloud authentication across the Rails auth service, the web console, the Rust or WASM auth SDKs, and Tauri or web client apps. Covers platform clients vs tenant auth apps, AuthUser signup/sign-in/confirmation, OAuth providers for AuthUser, shared auth apps across projects, browser SDK integration, and development vs production app credentials.

#smbCloud Auth

Use this skill when work touches any part of the smbCloud auth stack:

• smbcloud-api Rails auth service
• smbcloud-web-console Next.js admin UI
• smbcloud-cli/crates/smbcloud-auth Rust SDK
• smbcloud-cli/crates/smbcloud-auth-wasm browser SDK
• Tauri apps such as Rumi Learn Persian and PBJ Komplit
• web apps that use @smbcloud/sdk-auth

#Core model

There are two auth planes. Do not mix them.

#1. Platform clients

These are smbCloud's own apps:

• web
• cli
• sigit
• moovibe
• webconsole

They authenticate smbCloud operator users through platform endpoints such as:

• POST /v1/users/sign_in
• POST /v1/users

They must use the platform client validator, not tenant app validation.

#2. Tenant auth apps

These are customer-facing apps such as Rumi or PBJ Komplit.

They authenticate end users through:

• POST /v1/client/users
• POST /v1/client/users/sign_in
• GET /v1/client/me
• DELETE /v1/client/me
• DELETE /v1/client/users/sign_out
• GET /v1/client/users/confirmation

The tenant auth domain is:

• AuthApp
• AuthAppSecret
• AuthUser

Tenant apps must use AuthAppClientAuthenticatable and must not go through platform /v1/users.

#Provider auth boundary

OAuth providers such as Apple or Google for customer apps belong to the tenant auth plane:

• provider sign-in for end users must resolve to AuthUser
• provider linkage must be scoped to AuthApp
• the result must be the same tenant auth session shape used by email/password

Do not route tenant provider auth through:

• platform User
• Authorization records for platform users
• Doorkeeper/OIDC smbCloud internal users

If provider support is added for tenant apps, the backend contract should end in an AuthUser session or JWT, not a provider token as the primary app session.

#Multi-project auth apps

Current rule:

• one AuthApp has an owner project via auth_apps.project_id
• one AuthApp can be shared with other projects through auth_app_projects
• one project can point to only one auth app

If a workspace/project should reuse an existing auth app, attach it instead of creating a duplicate.

#Rails conventions

When editing smbcloud-api:

• Platform operator auth stays under User
• Tenant app auth stays under AuthUser
• Do not reuse OauthApplication for tenant end-user login
• Do not hardcode tenant app validation in platform controllers

#Tenant provider auth modeling

If tenant users need Apple, Google, or other OAuth providers:

• add provider linkage for AuthUser, not platform User
• model by stable provider subject, not by email
• keep provider records scoped to the tenant auth app

Preferred shape:

• AuthUserAuthorization
  • auth_user_id
  • provider
  • uid
  • optional email
  • optional raw_profile

For Apple specifically:

• use Apple sub as the stable provider identity
• do not treat email as the primary key
• do not assume name is available after first sign-in

The Rails backend should verify provider assertions and then mint the normal tenant auth session for the resolved AuthUser.

#AuthUser signup/sign-in rules

• Signup creates an AuthUser scoped to current_auth_app
• Signup sends confirmation email
• Do not auto-set confirmed_at
• Sign-in returns EmailNotVerified until email is confirmed
• Deletion removes the currently authenticated AuthUser

#Mail flow

For tenant users, use the explicit confirmation flow already established:

• custom mailer for AuthUser
• confirmation link to /v1/client/users/confirmation?confirmation_token=...

Do not claim email confirmation exists unless the mailer and route are actually wired.

#Rust SDK conventions

The Rust client surface lives in:

• smbcloud-cli/crates/smbcloud-auth
• smbcloud-cli/crates/smbcloud-auth-wasm

When changing tenant app auth:

• keep tenant auth on /v1/client/*
• preserve AccountStatus mapping:
  • NotFound
  • Ready { access_token }
  • Incomplete { status }
• request_login depends on 422 + error_code for incomplete accounts

If the backend changes error shape or status codes, update the Rust parser accordingly.

#Browser/WASM SDK conventions

The browser package is consumed as @smbcloud/sdk-auth.

Current exported surface includes:

• signup_with_client
• login_with_client
• me_with_client
• logout_with_client
• remove_with_client
• Environment.Dev
• Environment.Production

Recommended browser integration pattern:

• lazy-load the WASM runtime with await import("@smbcloud/sdk-auth")
• call await runtime.default() before using the exported functions
• store only the access token in browser storage
• restore the session with me_with_client
• gate environment switching behind explicit debug controls

Do not build browser flows around NextAuth sessions if the product session is actually an smbCloud AuthUser token. The browser app should either:

• use the browser SDK directly for email/password flows, or
• complete provider auth through Rails and then store the resulting tenant auth token

#Tauri client conventions

For Rumi/PBJ-style apps:

• use a dedicated src-tauri/src/smbcloud/mod.rs
• expose commands for:
  • signup_user
  • sign_in_user
  • current_user
  • sign_out_user
  • delete_current_user
  • is_debug_build
• store auth state in plugin-store:
  • access token
  • provider
  • auth environment
  • language

#Environment handling

Keep development and production app credentials separate.

Preferred pattern:

• development credentials for local auth service
• production credentials for hosted auth service
• switch via a Rust AuthEnvironment enum
• expose the switch in debug builds only

Recommended env variable names:

• SMBCLOUD_APP_ID_DEV
• SMBCLOUD_APP_SECRET_DEV
• SMBCLOUD_APP_ID_PRODUCTION
• SMBCLOUD_APP_SECRET_PRODUCTION

#Public-client security rule

Tauri, mobile, and browser apps are public clients. Treat app_id as public and app_secret as non-confidential if it is shipped in a client binary or browser bundle.

Implications:

• do not claim the client app secret is secure once distributed
• do not rely on embedded app_secret as the main client authentication boundary
• prefer backend-mediated flows, PKCE, or other public-client-safe patterns for stronger security

If the current SDK or API still requires app_secret from public clients, call out that limitation explicitly in code review or implementation notes.

#macOS Tauri dev builds

tauri.conf.json minimumSystemVersion is not enough for tauri dev.

For apps that link Swift-based plugins such as tauri-plugin-iap, add src-tauri/.cargo/config.toml with:

• MACOSX_DEPLOYMENT_TARGET=14.0
• -mmacosx-version-min=14.0 for both Apple targets
• host CC and CXX overrides to /usr/bin/clang and /usr/bin/clang++

If you see libswift_Concurrency.dylib at runtime, fix Cargo/macOS config first.

#Web console conventions

The admin UI lives in smbcloud-web-console.

Use the Auth area, not generic settings pages, for tenant auth app management.

Expected behavior:

• scope auth view to selected workspace/project
• if workspace has an auth app, show the app and its users
• if not, allow:
  • creating a new auth app
  • attaching an existing tenant auth app
• show app id in list views
• hide app secret by default on detail views
• show linked/shared workspaces on detail pages

#Typical change flow

1. Decide whether the change is platform auth or tenant auth.
2. Update Rails first.
3. If OAuth providers are involved, confirm whether the provider is for AuthUser or internal User. Default tenant/customer providers to AuthUser.
4. Update Rust or WASM SDK endpoints/parsing if the API contract changed.
5. Update Tauri or browser clients to match.
6. Update the web console if auth app management changed.
7. Validate end-to-end.

#Validation

Use the smallest relevant checks.

#Rails

• bundle exec rails routes | grep 'v1/client\|auth_apps'
• ruby -c on touched controller/model/mailer files
• bundle exec rails db:migrate if schema changed

#Rust SDK

• cargo check -p smbcloud-auth
• cargo check -p smbcloud-auth-wasm

#Tauri apps

• cargo check in src-tauri
• pnpm build in the app root when frontend changed

#Web console

• pnpm build

#Browser SDK apps

• pnpm build
• verify login, logout, and session restore in the browser
• if environment override exists, verify both development and production modes

#Common mistakes

• Sending tenant app credentials to /v1/users
• Using OauthApplication instead of AuthApp for tenant login
• Replacing platform client validation with tenant auth app validation
• Implementing Apple or Google for tenant users on platform User instead of AuthUser
• Returning raw provider tokens as the primary tenant app session
• Treating a browser or native app app_secret as confidential
• Auto-confirming AuthUser while telling the client to check email
• Building smbCloud AuthUser web auth on top of unrelated NextAuth session state
• Forgetting that tauri dev ignores tauri.conf.json macOS minimum version