chore: core 多模块骨架

core/designsystem/build.gradle.kts

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+plugins {
+    alias(libs.plugins.mcl.android.library.compose)
+}
+
+android {
+    namespace = "com.mingyuan.android_client.core.designsystem"
+}

core/designsystem/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest />

core/designsystem/src/main/kotlin/com/mingyuan/android_client/core/designsystem/theme/Color.kt

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+package com.mingyuan.android_client.core.designsystem.theme
+
+import androidx.compose.ui.graphics.Color
+
+val Purple80 = Color(0xFFD0BCFF)
+val PurpleGrey80 = Color(0xFFCCC2DC)
+val Pink80 = Color(0xFFEFB8C8)
+
+val Purple40 = Color(0xFF6650A4)
+val PurpleGrey40 = Color(0xFF625B71)
+val Pink40 = Color(0xFF7D5260)

core/designsystem/src/main/kotlin/com/mingyuan/android_client/core/designsystem/theme/Theme.kt

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+package com.mingyuan.android_client.core.designsystem.theme
+
+import android.os.Build
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+
+private val DarkColorScheme = darkColorScheme(
+    primary = Purple80,
+    secondary = PurpleGrey80,
+    tertiary = Pink80,
+)
+
+private val LightColorScheme = lightColorScheme(
+    primary = Purple40,
+    secondary = PurpleGrey40,
+    tertiary = Pink40,
+)
+
+/**
+ * The app's single Material theme. All UI entry points wrap their content in [MingyuanTheme].
+ */
+@Composable
+fun MingyuanTheme(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+    // Dynamic color is available on Android 12+.
+    dynamicColor: Boolean = true,
+    content: @Composable () -> Unit,
+) {
+    val colorScheme = when {
+        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
+            val context = LocalContext.current
+            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+        }
+
+        darkTheme -> DarkColorScheme
+        else -> LightColorScheme
+    }
+
+    MaterialTheme(
+        colorScheme = colorScheme,
+        typography = Typography,
+        content = content,
+    )
+}

core/designsystem/src/main/kotlin/com/mingyuan/android_client/core/designsystem/theme/Type.kt

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+package com.mingyuan.android_client.core.designsystem.theme
+
+import androidx.compose.material3.Typography
+
+// Uses Material 3 defaults; customize typography here as the design system evolves.
+val Typography = Typography()