recipe/.planning/phases/02-authentication-foundation/02-05-PLAN.md

---
phase: 02-authentication-foundation
plan: 05
type: execute
wave: 4
depends_on: [02-04]
files_modified:
  - composeApp/src/commonMain/composeResources/values/strings.xml
  - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/App.kt
  - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/theme/RecipeTheme.kt
  - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/SplashScreen.kt
  - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/LoginScreen.kt
  - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/LoginViewModel.kt
  - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/PostLoginPlaceholderScreen.kt
  - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/PostLoginViewModel.kt
  - composeApp/src/commonTest/kotlin/dev/ulfrx/recipe/ui/screens/auth/LoginViewModelTest.kt
autonomous: false
requirements: [AUTH-01, AUTH-04, AUTH-05]
must_haves:
  truths:
    - "Fresh launch in Loading shows SplashScreen with Recipe wordmark and progress indicator"
    - "Unauthenticated state shows LoginScreen with Polish Authentik sign-in button"
    - "Login errors render inline below the button and retry clears stale error"
    - "Authenticated state shows Witaj, {displayName}! and Wyloguj się"
    - "Wyloguj się returns to LoginScreen through AuthSession.logout()"
    - "All Phase 2 user-facing strings come from Compose Resources"
  artifacts:
    - path: "composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/App.kt"
      provides: "Auth gate rendering Splash/Login/PostLogin by AuthState"
      contains: "when"
    - path: "composeApp/src/commonMain/composeResources/values/strings.xml"
      provides: "auth_app_name/auth_sign_in_button/auth_sign_out_button/auth_welcome_format/auth_error_*"
      contains: "auth_sign_in_button"
    - path: "composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/LoginScreen.kt"
      provides: "UI-SPEC login layout and inline error state"
      contains: "auth_sign_in_button"
  key_links:
    - from: "composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/App.kt"
      to: "composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/auth/AuthSession.kt"
      via: "collectAsState over AuthSession.state"
      pattern: "collectAsState"
    - from: "composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/PostLoginViewModel.kt"
      to: "composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/auth/AuthSession.kt"
      via: "onSignOutClick delegates to logout"
      pattern: "logout"
---

<objective>
Deliver the user-facing Phase 2 auth experience and final validation gate.

Purpose: make end-to-end auth observable: login button, loading screen, welcome confirmation, logout button, and manual iOS Authentik UAT.
Output: auth screens, auth gate, resource strings, UI ViewModels, and validation checklist execution.
</objective>

<execution_context>
@/Users/rwilk/.codex/get-shit-done/workflows/execute-plan.md
@/Users/rwilk/.codex/get-shit-done/templates/summary.md
</execution_context>

<context>
@.planning/PROJECT.md
@.planning/REQUIREMENTS.md
@.planning/ROADMAP.md
@.planning/phases/02-authentication-foundation/02-CONTEXT.md
@.planning/phases/02-authentication-foundation/02-UI-SPEC.md
@.planning/phases/02-authentication-foundation/02-VALIDATION.md
@.planning/phases/02-authentication-foundation/02-PATTERNS.md
@.planning/phases/02-authentication-foundation/02-04-SUMMARY.md
@AGENTS.md
@composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/App.kt
</context>

<tasks>

<task type="auto" tdd="true">
  <name>Task 1: Add Compose Resources, theme seed, and ViewModel tests</name>
  <read_first>
    - .planning/phases/02-authentication-foundation/02-UI-SPEC.md
    - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/App.kt
    - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/auth/AuthSession.kt
  </read_first>
  <files>composeApp/src/commonMain/composeResources/values/strings.xml, composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/theme/RecipeTheme.kt, composeApp/src/commonTest/kotlin/dev/ulfrx/recipe/ui/screens/auth/LoginViewModelTest.kt</files>
  <behavior>
    - String keys exist with exact Polish scaffold copy from UI-SPEC.
    - `RecipeTheme` uses Material 3 light/dark schemes with primary seed `#3B6939` / dark variant `#A2D597`.
    - LoginViewModel maps cancelled/network/unknown auth failures to the correct string resource keys.
    - Starting a new login clears previous inline error and sets loading.
  </behavior>
  <action>
    Create `strings.xml` keys: `auth_app_name`, `auth_sign_in_button`, `auth_sign_out_button`, `auth_welcome_format`, `auth_error_cancelled`, `auth_error_network`, `auth_error_unknown` with exact UI-SPEC copy.

    Add `RecipeTheme(content)` with `lightColorScheme(primary = Color(0xFF3B6939))`, `darkColorScheme(primary = Color(0xFFA2D597))`, `isSystemInDarkTheme()`, and Material 3 typography defaults. Do not add Haze, blur, images, icons, Scaffold, or marketing copy.

    Write `LoginViewModelTest` against a fake `AuthSession` result interface before implementing the ViewModel in Task 2.
  </action>
  <verify>
    <automated>./gradlew :composeApp:jvmTest --tests "*LoginViewModelTest*"</automated>
  </verify>
  <acceptance_criteria>
    - `grep -q 'name="auth_sign_in_button">Zaloguj się przez Authentik' composeApp/src/commonMain/composeResources/values/strings.xml`
    - `grep -q '0xFF3B6939' composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/theme/RecipeTheme.kt`
    - `grep -q 'auth_error_cancelled' composeApp/src/commonTest/kotlin/dev/ulfrx/recipe/ui/screens/auth/LoginViewModelTest.kt`
    - After Task 2, `./gradlew :composeApp:jvmTest --tests "*LoginViewModelTest*"` exits 0
  </acceptance_criteria>
  <done>Resource and theme foundations match UI-SPEC and login error mapping is tested.</done>
</task>

<task type="auto">
  <name>Task 2: Implement auth screens, ViewModels, and App auth gate</name>
  <read_first>
    - .planning/phases/02-authentication-foundation/02-UI-SPEC.md (Component Inventory, Layout Contract, Auth Gate Routing Contract)
    - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/auth/AuthState.kt
    - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/auth/AuthSession.kt
    - composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/di/AppModule.kt
  </read_first>
  <files>composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/App.kt, composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/SplashScreen.kt, composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/LoginScreen.kt, composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/LoginViewModel.kt, composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/PostLoginPlaceholderScreen.kt, composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/PostLoginViewModel.kt, composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/auth/AuthModule.kt</files>
  <action>
    Replace template `App()` body with `RecipeTheme { val authState by authSession.state.collectAsState(); when(authState) { Loading -> SplashScreen(); Unauthenticated -> LoginScreen(koinViewModel()); Authenticated -> PostLoginPlaceholderScreen(user, koinViewModel()) } }`. State changes drive recomposition; no manual navigation or Scaffold.

    Implement `SplashScreen`, `LoginScreen`, and `PostLoginPlaceholderScreen` exactly from UI-SPEC: centered column, `safeContentPadding`, horizontal 16.dp, displaySmall wordmark, Login button with loading indicator, inline bodyLarge error text below button, welcome `headlineSmall`, logout `OutlinedButton`. All strings must use `stringResource(Res.string.*)`.

    Implement `LoginViewModel` with method `onSignInClick()` and immutable `LoginScreenState(isLoading: Boolean, errorKey: StringResource?)`. Implement `PostLoginViewModel.onSignOutClick()` delegating to `AuthSession.logout()`. Register ViewModels in `authModule` using existing Koin Compose ViewModel pattern.
  </action>
  <verify>
    <automated>./gradlew :composeApp:jvmTest :composeApp:compileDebugKotlinAndroid :composeApp:compileKotlinIosSimulatorArm64</automated>
  </verify>
  <acceptance_criteria>
    - `! grep -R 'Click me!' composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/App.kt`
    - `grep -q 'collectAsState' composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/App.kt`
    - `grep -q 'SplashScreen' composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/App.kt`
    - `grep -q 'auth_welcome_format' composeApp/src/commonMain/kotlin/dev/ulfrx/recipe/ui/screens/auth/PostLoginPlaceholderScreen.kt`
    - `! grep -R 'Zaloguj\\|Wyloguj\\|Witaj\\|Nie można\\|Coś poszło' composeApp/src/commonMain/kotlin/dev/ulfrx/recipe --include='*.kt'`
    - `./gradlew :composeApp:jvmTest :composeApp:compileDebugKotlinAndroid :composeApp:compileKotlinIosSimulatorArm64` exits 0
  </acceptance_criteria>
  <done>Auth gate UI compiles, uses resources, and has no dangling reference to a missing plan.</done>
</task>

<task type="checkpoint:human-verify" gate="blocking">
  <name>Task 3: Manual iOS Authentik UAT</name>
  <read_first>
    - docs/authentik-setup.md
    - .planning/phases/02-authentication-foundation/02-VALIDATION.md (Manual-Only Verifications)
  </read_first>
  <files>docs/authentik-setup.md, .planning/phases/02-authentication-foundation/02-05-SUMMARY.md</files>
  <action>
    Run automated gate first: `./gradlew check`.

    Then perform the manual UAT from `docs/authentik-setup.md` on iOS simulator/device with the real Authentik provider:
    1. Fresh install opens Splash then LoginScreen.
    2. Tap `Zaloguj się przez Authentik`; hosted Authentik login opens and returns through `recipe://callback`.
    3. App shows `Witaj, {displayName}!`.
    4. Restart after access-token expiry or shortened token lifetime; app returns to authenticated screen without credentials.
    5. Tap `Wyloguj się`; app returns to LoginScreen; restart does not silently authenticate.
    6. `GET /api/v1/me` returns 200 with valid token and 401 without token or with wrong-audience token.
  </action>
  <verify>
    <automated>./gradlew check</automated>
  </verify>
  <acceptance_criteria>
    - `./gradlew check` exits 0
    - Manual UAT result recorded in `.planning/phases/02-authentication-foundation/02-05-SUMMARY.md`
    - If any UAT step fails, record exact step, observed behavior, logs with tokens redacted, and do not mark Phase 2 complete
  </acceptance_criteria>
  <what-built>Phase 2 end-to-end auth flow: Authentik login, secure token persistence, server /me, and logout UI.</what-built>
  <how-to-verify>Follow the six UAT steps in the action block using the real Authentik provider configured from docs/authentik-setup.md.</how-to-verify>
  <resume-signal>Type "approved" if UAT passes, or describe the failing step and observed behavior.</resume-signal>
  <done>Automated tests are green and the user confirms fresh login, persisted session refresh, logout, and /api/v1/me behavior.</done>
</task>

</tasks>

<threat_model>
## Trust Boundaries

| Boundary | Description |
|----------|-------------|
| UI -> AuthSession | User taps login/logout and triggers token-bearing flows |
| AuthSession -> UI | Auth errors are mapped to user-visible strings |
| Human UAT -> logs | Manual validation may inspect logs while tokens exist |

## STRIDE Threat Register

| Threat ID | Category | Component | Disposition | Mitigation Plan |
|-----------|----------|-----------|-------------|-----------------|
| T-02-05-01 | Information Disclosure | UI/log validation | mitigate | UAT summary must redact tokens and Authorization headers |
| T-02-05-02 | Information Disclosure | logout UX | mitigate | Logout button delegates to AuthSession.logout; UAT verifies no silent restore after relaunch |
| T-02-05-03 | Spoofing | login UX | mitigate | Button explicitly opens Authentik; AppAuth handles browser flow and callback |
| T-02-05-04 | Denial of Service | refresh UX | mitigate | Reopen-after-expiry UAT verifies transparent refresh path |
| T-02-05-05 | Tampering | raw strings | mitigate | All auth copy comes from Compose Resources, preventing ad hoc UI string drift |
</threat_model>

<verification>
Run `./gradlew :composeApp:jvmTest :composeApp:compileDebugKotlinAndroid :composeApp:compileKotlinIosSimulatorArm64`, then `./gradlew check`, then complete iOS Authentik UAT.
</verification>

<success_criteria>
The app visibly satisfies Phase 2 roadmap criteria: sign in, stay signed in, sign out, and prove server `/api/v1/me` works with valid/invalid tokens.
</success_criteria>

<output>
After completion, create `.planning/phases/02-authentication-foundation/02-05-SUMMARY.md`.
</output>