fix(deps): migrate off kotlinx.datetime.Instant type alias for 0.8.0

- Replace kotlinx.datetime.Instant imports with kotlin.time.Instant
  across 12 files (the type alias is removed in 0.8.0)
- Update deprecated monthNumber/dayOfMonth to month/day in tests

Author: bmc08gt

libs/datetime/src/main/kotlin/com/getcode/util/DateUtils.kt

@@ -4,7 +4,7 @@ import android.text.format.DateFormat
 import android.text.format.DateUtils
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.platform.LocalContext
-import kotlinx.datetime.Instant
+import kotlin.time.Instant
 import java.util.Calendar
 import java.util.Locale
 import kotlin.time.Clock

libs/datetime/src/test/kotlin/com/getcode/util/DateUtilsTest.kt

@@ -1,6 +1,6 @@
 package com.getcode.util
 
-import kotlinx.datetime.Instant
+import kotlin.time.Instant
 import org.junit.runner.RunWith
 import org.robolectric.RobolectricTestRunner
 import org.robolectric.annotation.Config

libs/datetime/src/test/kotlin/com/getcode/util/InstantExtensionsTest.kt

@@ -1,8 +1,9 @@
 package com.getcode.util
 
 import kotlinx.datetime.DatePeriod
-import kotlinx.datetime.Instant
+import kotlin.time.Instant
 import kotlinx.datetime.LocalDate
+import kotlinx.datetime.Month
 import kotlinx.datetime.TimeZone
 import kotlinx.datetime.atStartOfDayIn
 import kotlinx.datetime.plus
@@ -27,8 +28,8 @@ class InstantExtensionsTest {
         val instant = Instant.fromEpochMilliseconds(1710504000000L)
         val date = instant.toLocalDate(utc)
         assertEquals(2024, date.year)
-        assertEquals(3, date.monthNumber)
-        assertEquals(15, date.dayOfMonth)
+        assertEquals(Month.MARCH, date.month)
+        assertEquals(15, date.day)
     }
 
     @Test
@@ -37,8 +38,8 @@ class InstantExtensionsTest {
         val instant = Instant.fromEpochMilliseconds(1704067200000L)
         val date = instant.toLocalDate(utc)
         assertEquals(2024, date.year)
-        assertEquals(1, date.monthNumber)
-        assertEquals(1, date.dayOfMonth)
+        assertEquals(Month.JANUARY, date.month)
+        assertEquals(1, date.day)
     }
 
     @Test
@@ -47,8 +48,8 @@ class InstantExtensionsTest {
         val instant = Instant.fromEpochMilliseconds(1704153599000L)
         val date = instant.toLocalDate(utc)
         assertEquals(2024, date.year)
-        assertEquals(1, date.monthNumber)
-        assertEquals(1, date.dayOfMonth)
+        assertEquals(Month.JANUARY, date.month)
+        assertEquals(1, date.day)
     }
 
     // --- atStartOfDay ---

libs/network/coinbase/onramp/src/main/kotlin/com/coinbase/onramp/data/OnRampPurchaseResponse.kt

@@ -1,7 +1,7 @@
 package com.coinbase.onramp.data
 
 import com.getcode.serialization.InstantIso8601Serializer
-import kotlinx.datetime.Instant
+import kotlin.time.Instant
 import kotlinx.serialization.Serializable
 
 

services/flipcash/src/main/kotlin/com/flipcash/services/internal/domain/ActivityFeedMessageMapper.kt

@@ -17,7 +17,7 @@ import com.getcode.opencode.model.financial.Fiat
 import com.getcode.opencode.model.financial.LocalFiat
 import com.getcode.opencode.model.financial.Rate
 import com.getcode.solana.keys.Mint
-import kotlinx.datetime.Instant
+import kotlin.time.Instant
 import java.math.BigDecimal
 import javax.inject.Inject
 

services/flipcash/src/main/kotlin/com/flipcash/services/internal/extensions/Instant.kt

@@ -1,7 +1,7 @@
 package com.flipcash.services.internal.extensions
 
 import com.getcode.util.atStartOfDay
-import kotlinx.datetime.Instant
+import kotlin.time.Instant
 import kotlinx.datetime.TimeZone
 import kotlinx.datetime.toLocalDateTime
 

services/flipcash/src/main/kotlin/com/flipcash/services/models/ActivityFeedNotification.kt

@@ -3,7 +3,7 @@ package com.flipcash.services.models
 import com.getcode.opencode.model.core.ID
 import com.getcode.opencode.model.financial.LocalFiat
 import com.getcode.solana.keys.PublicKey
-import kotlinx.datetime.Instant
+import kotlin.time.Instant
 import kotlinx.serialization.Serializable
 
 /**

services/opencode/src/main/kotlin/com/getcode/opencode/internal/domain/repositories/InternalTransactionRepository.kt

@@ -21,7 +21,7 @@ import com.getcode.solana.keys.PublicKey
 import com.getcode.utils.ErrorUtils
 import com.getcode.utils.network.retryableOrThrow
 import kotlinx.coroutines.CoroutineScope
-import kotlinx.datetime.Instant
+import kotlin.time.Instant
 import kotlin.time.Duration.Companion.seconds
 import javax.inject.Inject
 

services/opencode/src/main/kotlin/com/getcode/opencode/internal/extensions/Instant.kt

@@ -1,7 +1,7 @@
 package com.getcode.opencode.internal.extensions
 
 import com.getcode.util.atStartOfDay
-import kotlinx.datetime.Instant
+import kotlin.time.Instant
 import kotlinx.datetime.TimeZone
 import kotlinx.datetime.toLocalDateTime
 

services/opencode/src/main/kotlin/com/getcode/opencode/internal/network/services/TransactionService.kt

@@ -39,7 +39,7 @@ import com.getcode.solana.keys.PublicKey
 import com.getcode.solana.keys.base58
 import com.getcode.utils.trace
 import kotlinx.coroutines.CoroutineScope
-import kotlinx.datetime.Instant
+import kotlin.time.Instant
 import javax.inject.Inject