feat: 新增关于页面与开源许可页面

- 新增 AboutActivity、LicensesActivity 及对应的 Slide 转场动画
- MainActivity 接入 CalendarMonthView，支持导航到关于页面
- 移除 composeResources 下的 AGENTS.md

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

androidApp/src/main/AndroidManifest.xml

@@ -18,6 +18,14 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <activity
+            android:name=".AboutActivity"
+            android:exported="false" />
+
+        <activity
+            android:name=".LicensesActivity"
+            android:exported="false" />
     </application>
 
 </manifest>

androidApp/src/main/kotlin/plus/rua/project/AboutActivity.kt

@@ -0,0 +1,48 @@
+package plus.rua.project
+
+import android.content.Intent
+import android.os.Build
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+import plus.rua.project.ui.AboutScreen
+
+class AboutActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        enableEdgeToEdge()
+        super.onCreate(savedInstanceState)
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+            overrideActivityTransition(
+                OVERRIDE_TRANSITION_OPEN,
+                R.anim.slide_in_right,
+                R.anim.slide_out_left
+            )
+            overrideActivityTransition(
+                OVERRIDE_TRANSITION_CLOSE,
+                R.anim.slide_in_left,
+                R.anim.slide_out_right
+            )
+        }
+
+        setContent {
+            AboutScreen(
+                onBack = {
+                    finish()
+                    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+                        @Suppress("DEPRECATION")
+                        overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_right)
+                    }
+                },
+                onNavigateToLicenses = {
+                    startActivity(Intent(this, LicensesActivity::class.java))
+                    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+                        @Suppress("DEPRECATION")
+                        overridePendingTransition(R.anim.slide_in_right, R.anim.slide_out_left)
+                    }
+                }
+            )
+        }
+    }
+}

androidApp/src/main/kotlin/plus/rua/project/LicensesActivity.kt

@@ -0,0 +1,40 @@
+package plus.rua.project
+
+import android.os.Build
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+import plus.rua.project.ui.LicensesScreen
+
+class LicensesActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        enableEdgeToEdge()
+        super.onCreate(savedInstanceState)
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+            overrideActivityTransition(
+                OVERRIDE_TRANSITION_OPEN,
+                R.anim.slide_in_right,
+                R.anim.slide_out_left
+            )
+            overrideActivityTransition(
+                OVERRIDE_TRANSITION_CLOSE,
+                R.anim.slide_in_left,
+                R.anim.slide_out_right
+            )
+        }
+
+        setContent {
+            LicensesScreen(
+                onBack = {
+                    finish()
+                    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+                        @Suppress("DEPRECATION")
+                        overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_right)
+                    }
+                }
+            )
+        }
+    }
+}

androidApp/src/main/kotlin/plus/rua/project/MainActivity.kt

@@ -1,11 +1,14 @@
 package plus.rua.project
 
+import android.content.Intent
+import android.os.Build
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.tooling.preview.Preview
+import plus.rua.project.ui.CalendarMonthView
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -13,7 +16,15 @@ class MainActivity : ComponentActivity() {
         super.onCreate(savedInstanceState)
 
         setContent {
-            App()
+            CalendarMonthView(
+                onNavigateToAbout = {
+                    startActivity(Intent(this, AboutActivity::class.java))
+                    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+                        @Suppress("DEPRECATION")
+                        overridePendingTransition(R.anim.slide_in_right, R.anim.slide_out_left)
+                    }
+                }
+            )
         }
     }
 }
@@ -21,5 +32,5 @@ class MainActivity : ComponentActivity() {
 @Preview
 @Composable
 fun AppAndroidPreview() {
-    App()
+    CalendarMonthView()
-}
+}

androidApp/src/main/res/anim/slide_in_left.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<translate
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:duration="350"
+    android:fromXDelta="-30%"
+    android:toXDelta="0%"
+    android:interpolator="@android:interpolator/fast_out_slow_in" />

androidApp/src/main/res/anim/slide_in_right.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<translate
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:duration="350"
+    android:fromXDelta="100%"
+    android:toXDelta="0%"
+    android:interpolator="@android:interpolator/fast_out_slow_in" />

androidApp/src/main/res/anim/slide_out_left.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<translate
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:duration="350"
+    android:fromXDelta="0%"
+    android:toXDelta="-30%"
+    android:interpolator="@android:interpolator/fast_out_slow_in" />

androidApp/src/main/res/anim/slide_out_right.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<translate
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:duration="350"
+    android:fromXDelta="0%"
+    android:toXDelta="100%"
+    android:interpolator="@android:interpolator/fast_out_slow_in" />

shared/src/commonMain/composeResources/AGENTS.md

@@ -1,26 +0,0 @@
-<!-- Parent: ../../../AGENTS.md -->
-<!-- Generated: 2026-05-20 | Updated: 2026-05-20 -->
-
-# composeResources
-
-## Purpose
-Compose Multiplatform 共享资源目录，存放跨平台可访问的图片和文件资源。
-
-## Key Files
-
-无（目录仅包含子目录）
-
-## Subdirectories
-
-| Directory | Purpose |
-|-----------|---------|
-| `drawable/` | 图片资源（图标、插图等） |
-| `files/` | 原始文件资源 |
-
-## For AI Agents
-
-### Working In This Directory
-- 资源通过 Compose 的 `Res` 对象访问（如 `Res.drawable.xxx`）
-- 添加新资源后需重新编译以生成访问代码
-
-<!-- MANUAL: -->