feat: auth screen with auto-redirect, sync favorites/history with backend

app/src/main/java/com/radiola/data/remote/RadiolaApi.kt

@@ -0,0 +1,48 @@
+package com.radiola.data.remote
+
+import com.radiola.data.remote.dto.AuthResponseDto
+import com.radiola.data.remote.dto.BackendStationDto
+import com.radiola.data.remote.dto.HistoryResponseDto
+import com.radiola.data.remote.dto.MagicLinkRequestDto
+import com.radiola.data.remote.dto.MagicLinkVerifyDto
+import com.radiola.data.remote.dto.UserSettingsDto
+import kotlinx.serialization.json.JsonObject
+import retrofit2.http.Body
+import retrofit2.http.DELETE
+import retrofit2.http.GET
+import retrofit2.http.POST
+import retrofit2.http.PATCH
+import retrofit2.http.Path
+
+interface RadiolaApi {
+
+    @POST("auth/magic-link")
+    suspend fun requestMagicLink(@Body dto: MagicLinkRequestDto): JsonObject
+
+    @POST("auth/verify")
+    suspend fun verifyMagicLink(@Body dto: MagicLinkVerifyDto): AuthResponseDto
+
+    @GET("users/me")
+    suspend fun getMe(): JsonObject
+
+    @GET("users/me/settings")
+    suspend fun getSettings(): UserSettingsDto
+
+    @PATCH("users/me/settings")
+    suspend fun updateSettings(@Body dto: UserSettingsDto): UserSettingsDto
+
+    @GET("users/me/favorites")
+    suspend fun getFavorites(): List<BackendStationDto>
+
+    @POST("users/me/favorites/{stationId}")
+    suspend fun addFavorite(@Path("stationId") stationId: String): JsonObject
+
+    @DELETE("users/me/favorites/{stationId}")
+    suspend fun removeFavorite(@Path("stationId") stationId: String): JsonObject
+
+    @GET("users/me/history")
+    suspend fun getHistory(): HistoryResponseDto
+
+    @POST("users/me/history/{stationId}")
+    suspend fun addHistory(@Path("stationId") stationId: String): JsonObject
+}