test(android): the slow-hydration test's row carries the mock server URL

On a real background dispatcher the store's row collector lands after
construction and reset the base URL to the default, so the request went to
localhost:8080 instead of the mock server. The row now holds the server URL.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

android/app/src/test/java/com/fabledsword/minstrel/api/AuthCookieInterceptorTest.kt

@@ -4,6 +4,7 @@ import com.fabledsword.minstrel.auth.AuthStore
 import com.fabledsword.minstrel.auth.FakeSessionVault
 import com.fabledsword.minstrel.auth.SessionVault
 import com.fabledsword.minstrel.cache.db.dao.AuthSessionDao
+import com.fabledsword.minstrel.cache.db.entities.AuthSessionEntity
 import io.mockk.coEvery
 import io.mockk.every
 import io.mockk.mockk
@@ -155,16 +156,19 @@ class AuthCookieInterceptorTest {
 
                 override fun write(value: String?): Boolean = true
             }
+        // The store runs on a real background dispatcher here, so its row
+        // collector lands after construction; the row itself carries the
+        // server URL so that collector cannot reset it to the default.
+        val row = AuthSessionEntity(baseUrl = server.url("/").toString())
         val dao =
             mockk<AuthSessionDao> {
-                every { observe() } returns flowOf(null)
-                coEvery { get() } returns null
+                every { observe() } returns flowOf(row)
+                coEvery { get() } returns row
                 coEvery { upsert(any()) } returns Unit
                 coEvery { setSessionCookie(any()) } returns Unit
                 coEvery { setBaseUrl(any()) } returns Unit
             }
         val loading = AuthStore(dao, slowVault, CoroutineScope(SupervisorJob() + Dispatchers.Default))
-        loading.setBaseUrl(server.url("/").toString())
         val launchClient =
             OkHttpClient.Builder()
                 .addInterceptor(AuthCookieInterceptor(loading))