diff --git a/README.md b/README.md
index 0ea3256..99abc61 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 纯 Android + Jetpack Compose 日历应用，支持农历/节气/节日、个人班次排期，提供月/周/年三种视图。
 
 <div>
-    <img src="app/src/main/assets/app_icon.png" />
+    <img src="core/src/main/assets/app_icon.webp" width="128" height="128" />
 </div>
 
 ## 特性
diff --git a/app/src/main/assets/AGENTS.md b/app/src/main/assets/AGENTS.md
index d23a126..438ef21 100644
--- a/app/src/main/assets/AGENTS.md
+++ b/app/src/main/assets/AGENTS.md
@@ -1,25 +1,25 @@
 <!-- Parent: ../AGENTS.md -->
-<!-- Generated: 2026-05-22 | Updated: 2026-05-22 -->
+<!-- Generated: 2026-05-22 | Updated: 2026-06-15 -->
 
 # assets
 
 ## Purpose
-原始资产文件目录，存放不需要 Android 资源系统处理的二进制文件。当前包含 GIF 动画资源。
+`:app` 模块原始资产文件目录。当前为空（2026-06 清理后）。
 
 ## Key Files
 
-无顶层文件
+无
 
 ## Subdirectories
 
-| Directory | Purpose |
-|-----------|---------|
-| `gifs/` | GIF 动画资源（见 `gifs/AGENTS.md`） |
+无（原 `gifs/` 子目录的镜像说明已删除 —— 实际 UI/WebP 资源只在 `:core`）
 
 ## For AI Agents
 
 ### Working In This Directory
-- 新增原始资源文件直接放入此目录或其子目录
-- 通过 `AssetManager` 在运行时访问
+- 历史上此目录曾放 `app_icon.png`/`app_icon_original.png` 作图标源，因无代码引用已于 2026-06 删除
+- 应用内图标用 `core/src/main/assets/app_icon.webp`（`Platform.kt`）
+- 启动器图标用 `app/src/main/res/mipmap-*/`（含 Adaptive Icon）
+- **不要再把图标源 PNG 放这里**：会被打进 APK。原图 `app_icon_original.png` (2048px) 保留在 git 历史（commit `a36f6c4`），重新生成 foreground 时用 `git show a36f6c4:app/src/main/assets/app_icon_original.png` 恢复，生成脚本见 `docs/superpowers/plans/2026-06-15-image-management-optimization.md` Task 5
 
 <!-- MANUAL: -->
diff --git a/app/src/main/assets/app_icon.png b/app/src/main/assets/app_icon.png
deleted file mode 100644
index 00ff673..0000000
Binary files a/app/src/main/assets/app_icon.png and /dev/null differ
diff --git a/app/src/main/assets/app_icon_original.png b/app/src/main/assets/app_icon_original.png
deleted file mode 100644
index 6639e39..0000000
Binary files a/app/src/main/assets/app_icon_original.png and /dev/null differ
diff --git a/app/src/main/assets/gifs/AGENTS.md b/app/src/main/assets/gifs/AGENTS.md
deleted file mode 100644
index 8659a6f..0000000
--- a/app/src/main/assets/gifs/AGENTS.md
+++ /dev/null
@@ -1,33 +0,0 @@
-<!-- Parent: ../AGENTS.md -->
-<!-- Generated: 2026-05-22 | Updated: 2026-05-22 -->
-
-# gifs
-
-## Purpose
-GIF 动画资源目录，存放应用使用的动画 GIF 文件（001.gif ~ 152.gif），由 `AnimatedGif` Composable 组件通过 `sketch` 库加载显示。
-
-## Key Files
-
-| File | Description |
-|------|-------------|
-| `001.gif` ~ `152.gif` | 应用动画 GIF 资源 |
-
-## Subdirectories
-无
-
-## For AI Agents
-
-### Working In This Directory
-- 替换或新增 GIF 时保持连续编号
-- GIF 文件较大，注意 APK 体积影响
-- `AnimatedGif` 组件使用 `sketch` 库异步加载和播放
-
-## Dependencies
-
-### Internal
-- `core/src/main/kotlin/plus/rua/project/ui/AnimatedGif.kt` — GIF 显示组件
-
-### External
-- `sketch` 4.4.0（GIF 解码和播放）
-
-<!-- MANUAL: -->
diff --git a/app/src/main/res/drawable/ic_launcher_background.xml b/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..782052f
--- /dev/null
+++ b/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Adaptive Icon 背景: 纯色块, 取自原图四角采样 RGB(131,208,241) -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#83D0F1"
+        android:pathData="M0,0h108v108h-108z" />
+</vector>
diff --git a/app/src/main/res/drawable/ic_launcher_foreground.xml b/app/src/main/res/drawable/ic_launcher_foreground.xml
new file mode 100644
index 0000000..b0c9de2
--- /dev/null
+++ b/app/src/main/res/drawable/ic_launcher_foreground.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Adaptive Icon 前景: 引用 mipmap 中密度分桶的 foreground 位图,
+  避免矢量化位图主体的质量损失。
+-->
+<mipmap xmlns:android="http://schemas.android.com/apk/res/android"
+    android:src="@mipmap/ic_launcher_foreground" />
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000..1d66005
--- /dev/null
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Adaptive Icon (API 26+): 系统按 OEM 启动器形状自动裁切背景+前景。
+  monochrome 让 Android 13+ 主题化图标生效。
+-->
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000..40f2872
--- /dev/null
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Adaptive Icon 圆形版 (API 26+), 内容与 ic_launcher.xml 一致 -->
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.webp b/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.webp
new file mode 100644
index 0000000..a6ad9d0
Binary files /dev/null and b/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.webp differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.webp b/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.webp
new file mode 100644
index 0000000..6c37040
Binary files /dev/null and b/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.webp differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.webp b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.webp
new file mode 100644
index 0000000..be55a6d
Binary files /dev/null and b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.webp differ
diff --git a/core/build.gradle.kts b/core/build.gradle.kts
index aa3b9d9..fd3c00b 100644
--- a/core/build.gradle.kts
+++ b/core/build.gradle.kts
@@ -12,6 +12,21 @@ android {
     defaultConfig {
         minSdk = libs.versions.android.minSdk.get().toInt()
         consumerProguardFiles("proguard-rules.pro")
+
+        // 构建期扫描 assets/animations/ 生成 WebP 文件列表，避免运行期硬编码 (1..152)
+        // 与 assets/ 目录耦合却不校验，导致增删文件后隐性 bug
+        val webpFiles = layout.projectDirectory
+            .dir("src/main/assets/animations")
+            .asFile
+            .listFiles { f -> f.extension.equals("webp", ignoreCase = true) }
+            ?.map { it.name }
+            ?.sorted()
+            ?: emptyList()
+        require(webpFiles.isNotEmpty()) { "assets/animations/ 不应为空，请检查目录" }
+        // 拼成 Java 数组字面量: new String[]{"001.webp","002.webp",...}
+        val quoted = webpFiles.joinToString(",") { name -> "\"$name\"" }
+        val arrayLiteral = "new String[]{$quoted}"
+        buildConfigField("String[]", "WEBP_FILES", arrayLiteral)
     }
 
     buildTypes {
diff --git a/core/src/main/assets/AGENTS.md b/core/src/main/assets/AGENTS.md
index df256ae..2d87b65 100644
--- a/core/src/main/assets/AGENTS.md
+++ b/core/src/main/assets/AGENTS.md
@@ -1,25 +1,28 @@
 <!-- Parent: ../AGENTS.md -->
-<!-- Generated: 2026-05-22 | Updated: 2026-05-22 -->
+<!-- Generated: 2026-05-22 | Updated: 2026-06-15 -->
 
 # assets
 
 ## Purpose
-核心模块原始资产文件目录，与 `app/src/main/assets/` 镜像，包含 GIF 动画资源供 `AnimatedGif` Composable 组件加载。
+核心模块原始资产文件目录，通过 `AssetManager` 在运行时访问。包含应用内图标和动画 WebP 资源。
 
 ## Key Files
 
-无顶层文件
+| File | Description |
+|------|-------------|
+| `app_icon.webp` | 应用内展示用的图标（`Platform.kt` 的 `getAppIconUri()` 引用） |
 
 ## Subdirectories
 
 | Directory | Purpose |
 |-----------|---------|
-| `gifs/` | GIF 动画资源（见 `gifs/AGENTS.md`） |
+| `animations/` | 动画 WebP 资源（见 `animations/AGENTS.md`） |
 
 ## For AI Agents
 
 ### Working In This Directory
-- 此目录与 `app/src/main/assets/` 内容同步
-- 通过 `AssetManager` 在运行时访问
+- 新增原始资源文件直接放入此目录或其子目录
+- **不与 `app/src/main/assets/` 镜像**：启动器图标在 `:app`，UI/WebP 资源在 `:core`
+- 通过 `file:///android_asset/<path>` URI 在运行时访问
 
 <!-- MANUAL: -->
diff --git a/core/src/main/assets/gifs/001.webp b/core/src/main/assets/animations/001.webp
similarity index 100%
rename from core/src/main/assets/gifs/001.webp
rename to core/src/main/assets/animations/001.webp
diff --git a/core/src/main/assets/gifs/002.webp b/core/src/main/assets/animations/002.webp
similarity index 100%
rename from core/src/main/assets/gifs/002.webp
rename to core/src/main/assets/animations/002.webp
diff --git a/core/src/main/assets/gifs/003.webp b/core/src/main/assets/animations/003.webp
similarity index 100%
rename from core/src/main/assets/gifs/003.webp
rename to core/src/main/assets/animations/003.webp
diff --git a/core/src/main/assets/gifs/004.webp b/core/src/main/assets/animations/004.webp
similarity index 100%
rename from core/src/main/assets/gifs/004.webp
rename to core/src/main/assets/animations/004.webp
diff --git a/core/src/main/assets/gifs/005.webp b/core/src/main/assets/animations/005.webp
similarity index 100%
rename from core/src/main/assets/gifs/005.webp
rename to core/src/main/assets/animations/005.webp
diff --git a/core/src/main/assets/gifs/006.webp b/core/src/main/assets/animations/006.webp
similarity index 100%
rename from core/src/main/assets/gifs/006.webp
rename to core/src/main/assets/animations/006.webp
diff --git a/core/src/main/assets/gifs/007.webp b/core/src/main/assets/animations/007.webp
similarity index 100%
rename from core/src/main/assets/gifs/007.webp
rename to core/src/main/assets/animations/007.webp
diff --git a/core/src/main/assets/gifs/008.webp b/core/src/main/assets/animations/008.webp
similarity index 100%
rename from core/src/main/assets/gifs/008.webp
rename to core/src/main/assets/animations/008.webp
diff --git a/core/src/main/assets/gifs/009.webp b/core/src/main/assets/animations/009.webp
similarity index 100%
rename from core/src/main/assets/gifs/009.webp
rename to core/src/main/assets/animations/009.webp
diff --git a/core/src/main/assets/gifs/010.webp b/core/src/main/assets/animations/010.webp
similarity index 100%
rename from core/src/main/assets/gifs/010.webp
rename to core/src/main/assets/animations/010.webp
diff --git a/core/src/main/assets/gifs/011.webp b/core/src/main/assets/animations/011.webp
similarity index 100%
rename from core/src/main/assets/gifs/011.webp
rename to core/src/main/assets/animations/011.webp
diff --git a/core/src/main/assets/gifs/012.webp b/core/src/main/assets/animations/012.webp
similarity index 100%
rename from core/src/main/assets/gifs/012.webp
rename to core/src/main/assets/animations/012.webp
diff --git a/core/src/main/assets/gifs/013.webp b/core/src/main/assets/animations/013.webp
similarity index 100%
rename from core/src/main/assets/gifs/013.webp
rename to core/src/main/assets/animations/013.webp
diff --git a/core/src/main/assets/gifs/014.webp b/core/src/main/assets/animations/014.webp
similarity index 100%
rename from core/src/main/assets/gifs/014.webp
rename to core/src/main/assets/animations/014.webp
diff --git a/core/src/main/assets/gifs/015.webp b/core/src/main/assets/animations/015.webp
similarity index 100%
rename from core/src/main/assets/gifs/015.webp
rename to core/src/main/assets/animations/015.webp
diff --git a/core/src/main/assets/gifs/016.webp b/core/src/main/assets/animations/016.webp
similarity index 100%
rename from core/src/main/assets/gifs/016.webp
rename to core/src/main/assets/animations/016.webp
diff --git a/core/src/main/assets/gifs/017.webp b/core/src/main/assets/animations/017.webp
similarity index 100%
rename from core/src/main/assets/gifs/017.webp
rename to core/src/main/assets/animations/017.webp
diff --git a/core/src/main/assets/gifs/018.webp b/core/src/main/assets/animations/018.webp
similarity index 100%
rename from core/src/main/assets/gifs/018.webp
rename to core/src/main/assets/animations/018.webp
diff --git a/core/src/main/assets/gifs/019.webp b/core/src/main/assets/animations/019.webp
similarity index 100%
rename from core/src/main/assets/gifs/019.webp
rename to core/src/main/assets/animations/019.webp
diff --git a/core/src/main/assets/gifs/020.webp b/core/src/main/assets/animations/020.webp
similarity index 100%
rename from core/src/main/assets/gifs/020.webp
rename to core/src/main/assets/animations/020.webp
diff --git a/core/src/main/assets/gifs/021.webp b/core/src/main/assets/animations/021.webp
similarity index 100%
rename from core/src/main/assets/gifs/021.webp
rename to core/src/main/assets/animations/021.webp
diff --git a/core/src/main/assets/gifs/022.webp b/core/src/main/assets/animations/022.webp
similarity index 100%
rename from core/src/main/assets/gifs/022.webp
rename to core/src/main/assets/animations/022.webp
diff --git a/core/src/main/assets/gifs/023.webp b/core/src/main/assets/animations/023.webp
similarity index 100%
rename from core/src/main/assets/gifs/023.webp
rename to core/src/main/assets/animations/023.webp
diff --git a/core/src/main/assets/gifs/024.webp b/core/src/main/assets/animations/024.webp
similarity index 100%
rename from core/src/main/assets/gifs/024.webp
rename to core/src/main/assets/animations/024.webp
diff --git a/core/src/main/assets/gifs/025.webp b/core/src/main/assets/animations/025.webp
similarity index 100%
rename from core/src/main/assets/gifs/025.webp
rename to core/src/main/assets/animations/025.webp
diff --git a/core/src/main/assets/gifs/026.webp b/core/src/main/assets/animations/026.webp
similarity index 100%
rename from core/src/main/assets/gifs/026.webp
rename to core/src/main/assets/animations/026.webp
diff --git a/core/src/main/assets/gifs/027.webp b/core/src/main/assets/animations/027.webp
similarity index 100%
rename from core/src/main/assets/gifs/027.webp
rename to core/src/main/assets/animations/027.webp
diff --git a/core/src/main/assets/gifs/028.webp b/core/src/main/assets/animations/028.webp
similarity index 100%
rename from core/src/main/assets/gifs/028.webp
rename to core/src/main/assets/animations/028.webp
diff --git a/core/src/main/assets/gifs/029.webp b/core/src/main/assets/animations/029.webp
similarity index 100%
rename from core/src/main/assets/gifs/029.webp
rename to core/src/main/assets/animations/029.webp
diff --git a/core/src/main/assets/gifs/030.webp b/core/src/main/assets/animations/030.webp
similarity index 100%
rename from core/src/main/assets/gifs/030.webp
rename to core/src/main/assets/animations/030.webp
diff --git a/core/src/main/assets/gifs/031.webp b/core/src/main/assets/animations/031.webp
similarity index 100%
rename from core/src/main/assets/gifs/031.webp
rename to core/src/main/assets/animations/031.webp
diff --git a/core/src/main/assets/gifs/032.webp b/core/src/main/assets/animations/032.webp
similarity index 100%
rename from core/src/main/assets/gifs/032.webp
rename to core/src/main/assets/animations/032.webp
diff --git a/core/src/main/assets/gifs/033.webp b/core/src/main/assets/animations/033.webp
similarity index 100%
rename from core/src/main/assets/gifs/033.webp
rename to core/src/main/assets/animations/033.webp
diff --git a/core/src/main/assets/gifs/034.webp b/core/src/main/assets/animations/034.webp
similarity index 100%
rename from core/src/main/assets/gifs/034.webp
rename to core/src/main/assets/animations/034.webp
diff --git a/core/src/main/assets/gifs/035.webp b/core/src/main/assets/animations/035.webp
similarity index 100%
rename from core/src/main/assets/gifs/035.webp
rename to core/src/main/assets/animations/035.webp
diff --git a/core/src/main/assets/gifs/036.webp b/core/src/main/assets/animations/036.webp
similarity index 100%
rename from core/src/main/assets/gifs/036.webp
rename to core/src/main/assets/animations/036.webp
diff --git a/core/src/main/assets/gifs/037.webp b/core/src/main/assets/animations/037.webp
similarity index 100%
rename from core/src/main/assets/gifs/037.webp
rename to core/src/main/assets/animations/037.webp
diff --git a/core/src/main/assets/gifs/038.webp b/core/src/main/assets/animations/038.webp
similarity index 100%
rename from core/src/main/assets/gifs/038.webp
rename to core/src/main/assets/animations/038.webp
diff --git a/core/src/main/assets/gifs/039.webp b/core/src/main/assets/animations/039.webp
similarity index 100%
rename from core/src/main/assets/gifs/039.webp
rename to core/src/main/assets/animations/039.webp
diff --git a/core/src/main/assets/gifs/040.webp b/core/src/main/assets/animations/040.webp
similarity index 100%
rename from core/src/main/assets/gifs/040.webp
rename to core/src/main/assets/animations/040.webp
diff --git a/core/src/main/assets/gifs/041.webp b/core/src/main/assets/animations/041.webp
similarity index 100%
rename from core/src/main/assets/gifs/041.webp
rename to core/src/main/assets/animations/041.webp
diff --git a/core/src/main/assets/gifs/042.webp b/core/src/main/assets/animations/042.webp
similarity index 100%
rename from core/src/main/assets/gifs/042.webp
rename to core/src/main/assets/animations/042.webp
diff --git a/core/src/main/assets/gifs/043.webp b/core/src/main/assets/animations/043.webp
similarity index 100%
rename from core/src/main/assets/gifs/043.webp
rename to core/src/main/assets/animations/043.webp
diff --git a/core/src/main/assets/gifs/044.webp b/core/src/main/assets/animations/044.webp
similarity index 100%
rename from core/src/main/assets/gifs/044.webp
rename to core/src/main/assets/animations/044.webp
diff --git a/core/src/main/assets/gifs/045.webp b/core/src/main/assets/animations/045.webp
similarity index 100%
rename from core/src/main/assets/gifs/045.webp
rename to core/src/main/assets/animations/045.webp
diff --git a/core/src/main/assets/gifs/046.webp b/core/src/main/assets/animations/046.webp
similarity index 100%
rename from core/src/main/assets/gifs/046.webp
rename to core/src/main/assets/animations/046.webp
diff --git a/core/src/main/assets/gifs/047.webp b/core/src/main/assets/animations/047.webp
similarity index 100%
rename from core/src/main/assets/gifs/047.webp
rename to core/src/main/assets/animations/047.webp
diff --git a/core/src/main/assets/gifs/048.webp b/core/src/main/assets/animations/048.webp
similarity index 100%
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similarity index 100%
rename from core/src/main/assets/gifs/143.webp
rename to core/src/main/assets/animations/143.webp
diff --git a/core/src/main/assets/gifs/144.webp b/core/src/main/assets/animations/144.webp
similarity index 100%
rename from core/src/main/assets/gifs/144.webp
rename to core/src/main/assets/animations/144.webp
diff --git a/core/src/main/assets/gifs/145.webp b/core/src/main/assets/animations/145.webp
similarity index 100%
rename from core/src/main/assets/gifs/145.webp
rename to core/src/main/assets/animations/145.webp
diff --git a/core/src/main/assets/gifs/146.webp b/core/src/main/assets/animations/146.webp
similarity index 100%
rename from core/src/main/assets/gifs/146.webp
rename to core/src/main/assets/animations/146.webp
diff --git a/core/src/main/assets/gifs/147.webp b/core/src/main/assets/animations/147.webp
similarity index 100%
rename from core/src/main/assets/gifs/147.webp
rename to core/src/main/assets/animations/147.webp
diff --git a/core/src/main/assets/gifs/148.webp b/core/src/main/assets/animations/148.webp
similarity index 100%
rename from core/src/main/assets/gifs/148.webp
rename to core/src/main/assets/animations/148.webp
diff --git a/core/src/main/assets/gifs/149.webp b/core/src/main/assets/animations/149.webp
similarity index 100%
rename from core/src/main/assets/gifs/149.webp
rename to core/src/main/assets/animations/149.webp
diff --git a/core/src/main/assets/gifs/150.webp b/core/src/main/assets/animations/150.webp
similarity index 100%
rename from core/src/main/assets/gifs/150.webp
rename to core/src/main/assets/animations/150.webp
diff --git a/core/src/main/assets/gifs/151.webp b/core/src/main/assets/animations/151.webp
similarity index 100%
rename from core/src/main/assets/gifs/151.webp
rename to core/src/main/assets/animations/151.webp
diff --git a/core/src/main/assets/gifs/152.webp b/core/src/main/assets/animations/152.webp
similarity index 100%
rename from core/src/main/assets/gifs/152.webp
rename to core/src/main/assets/animations/152.webp
diff --git a/core/src/main/assets/animations/AGENTS.md b/core/src/main/assets/animations/AGENTS.md
new file mode 100644
index 0000000..c02985d
--- /dev/null
+++ b/core/src/main/assets/animations/AGENTS.md
@@ -0,0 +1,37 @@
+<!-- Parent: ../AGENTS.md -->
+<!-- Generated: 2026-05-22 | Updated: 2026-06-15 -->
+
+# animations
+
+## Purpose
+动画 WebP 资源目录，存放应用日历切换时随机展示的动画（文件名 `001.webp` ~ `NNN.webp`，由构建期扫描生成）。由 `AnimatedWebp` Composable 通过 `sketch` 库加载。
+
+> 历史命名曾为 `gifs/`（2026-06 前），实际格式一直是 WebP 动画，现已正名。
+
+## Key Files
+
+| File | Description |
+|------|-------------|
+| `001.webp` ~ `NNN.webp` | 动画 WebP 资源，编号零填充三位 |
+
+## Subdirectories
+无
+
+## For AI Agents
+
+### Working In This Directory
+- 替换或新增 WebP 时保持连续三位编号（如 `153.webp`）
+- **无需手动更新列表**：`core/build.gradle.kts` 在构建期扫描本目录生成 `BuildConfig.WEBP_FILES`
+- 由 `AnimatedWebpFilesTest` 守卫目录与列表一致
+- WebP 文件较大，注意 APK 体积
+
+## Dependencies
+
+### Internal
+- `core/src/main/kotlin/plus/rua/project/ui/AnimatedWebp.kt` — WebP 显示组件
+- `core/build.gradle.kts` — 构建期扫描注入 `BuildConfig.WEBP_FILES`
+
+### External
+- `sketch` 4.4.0（`sketch-animated-webp`，动画 WebP 解码播放）
+
+<!-- MANUAL: -->
diff --git a/core/src/main/assets/gifs/AGENTS.md b/core/src/main/assets/gifs/AGENTS.md
deleted file mode 100644
index 8659a6f..0000000
--- a/core/src/main/assets/gifs/AGENTS.md
+++ /dev/null
@@ -1,33 +0,0 @@
-<!-- Parent: ../AGENTS.md -->
-<!-- Generated: 2026-05-22 | Updated: 2026-05-22 -->
-
-# gifs
-
-## Purpose
-GIF 动画资源目录，存放应用使用的动画 GIF 文件（001.gif ~ 152.gif），由 `AnimatedGif` Composable 组件通过 `sketch` 库加载显示。
-
-## Key Files
-
-| File | Description |
-|------|-------------|
-| `001.gif` ~ `152.gif` | 应用动画 GIF 资源 |
-
-## Subdirectories
-无
-
-## For AI Agents
-
-### Working In This Directory
-- 替换或新增 GIF 时保持连续编号
-- GIF 文件较大，注意 APK 体积影响
-- `AnimatedGif` 组件使用 `sketch` 库异步加载和播放
-
-## Dependencies
-
-### Internal
-- `core/src/main/kotlin/plus/rua/project/ui/AnimatedGif.kt` — GIF 显示组件
-
-### External
-- `sketch` 4.4.0（GIF 解码和播放）
-
-<!-- MANUAL: -->
diff --git a/core/src/main/baseline-prof.txt b/core/src/main/baseline-prof.txt
index 8654ea2..5624a71 100644
--- a/core/src/main/baseline-prof.txt
+++ b/core/src/main/baseline-prof.txt
@@ -24042,25 +24042,25 @@ PLplus/rua/project/ui/AboutScreenKt$$ExternalSyntheticLambda1;-><init>(Lkotlin/j
 PLplus/rua/project/ui/AboutScreenKt$$ExternalSyntheticLambda1;->invoke(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
 PLplus/rua/project/ui/AboutScreenKt$$ExternalSyntheticLambda3;-><init>(Lkotlin/jvm/functions/Function0;)V
 PLplus/rua/project/ui/AboutScreenKt$$ExternalSyntheticLambda3;->invoke(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
-Lplus/rua/project/ui/AnimatedGifKt;
-SPLplus/rua/project/ui/AnimatedGifKt;->$r8$lambda$9BZMU2k1IVE0mP-Qo_-iEdny3Pc(Landroidx/compose/animation/core/Animatable;Landroidx/compose/ui/graphics/GraphicsLayerScope;)Lkotlin/Unit;
-SPLplus/rua/project/ui/AnimatedGifKt;->$r8$lambda$eedbksBryfiyumw--DGGjkjuU4A(Lcom/github/panpf/sketch/request/ImageOptions$Builder;)Lkotlin/Unit;
-SPLplus/rua/project/ui/AnimatedGifKt;-><clinit>()V
-SPLplus/rua/project/ui/AnimatedGifKt;->AnimatedGif$lambda$4$0(Lcom/github/panpf/sketch/request/ImageOptions$Builder;)Lkotlin/Unit;
-SPLplus/rua/project/ui/AnimatedGifKt;->AnimatedGif$lambda$5$0(Landroidx/compose/animation/core/Animatable;Landroidx/compose/ui/graphics/GraphicsLayerScope;)Lkotlin/Unit;
-SPLplus/rua/project/ui/AnimatedGifKt;->AnimatedGif(Landroidx/compose/ui/Modifier;Ljava/lang/String;Ljava/lang/Object;Landroidx/compose/runtime/Composer;II)V
-Lplus/rua/project/ui/AnimatedGifKt$$ExternalSyntheticLambda0;
-SPLplus/rua/project/ui/AnimatedGifKt$$ExternalSyntheticLambda0;-><init>()V
-SPLplus/rua/project/ui/AnimatedGifKt$$ExternalSyntheticLambda0;->invoke(Ljava/lang/Object;)Ljava/lang/Object;
-Lplus/rua/project/ui/AnimatedGifKt$$ExternalSyntheticLambda1;
-SPLplus/rua/project/ui/AnimatedGifKt$$ExternalSyntheticLambda1;-><init>(Landroidx/compose/animation/core/Animatable;)V
-SPLplus/rua/project/ui/AnimatedGifKt$$ExternalSyntheticLambda1;->invoke(Ljava/lang/Object;)Ljava/lang/Object;
-Lplus/rua/project/ui/AnimatedGifKt$$ExternalSyntheticLambda2;
-SPLplus/rua/project/ui/AnimatedGifKt$$ExternalSyntheticLambda2;-><init>(Landroidx/compose/ui/Modifier;Ljava/lang/String;Ljava/lang/Object;II)V
-Lplus/rua/project/ui/AnimatedGifKt$AnimatedGif$1$1;
-SPLplus/rua/project/ui/AnimatedGifKt$AnimatedGif$1$1;-><init>(Landroidx/compose/animation/core/Animatable;Lkotlin/coroutines/Continuation;)V
-SPLplus/rua/project/ui/AnimatedGifKt$AnimatedGif$1$1;->create(Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Lkotlin/coroutines/Continuation;
-SPLplus/rua/project/ui/AnimatedGifKt$AnimatedGif$1$1;->invokeSuspend(Ljava/lang/Object;)Ljava/lang/Object;
+Lplus/rua/project/ui/AnimatedWebpKt;
+SPLplus/rua/project/ui/AnimatedWebpKt;->$r8$lambda$9BZMU2k1IVE0mP-Qo_-iEdny3Pc(Landroidx/compose/animation/core/Animatable;Landroidx/compose/ui/graphics/GraphicsLayerScope;)Lkotlin/Unit;
+SPLplus/rua/project/ui/AnimatedWebpKt;->$r8$lambda$eedbksBryfiyumw--DGGjkjuU4A(Lcom/github/panpf/sketch/request/ImageOptions$Builder;)Lkotlin/Unit;
+SPLplus/rua/project/ui/AnimatedWebpKt;-><clinit>()V
+SPLplus/rua/project/ui/AnimatedWebpKt;->AnimatedWebp$lambda$4$0(Lcom/github/panpf/sketch/request/ImageOptions$Builder;)Lkotlin/Unit;
+SPLplus/rua/project/ui/AnimatedWebpKt;->AnimatedWebp$lambda$5$0(Landroidx/compose/animation/core/Animatable;Landroidx/compose/ui/graphics/GraphicsLayerScope;)Lkotlin/Unit;
+SPLplus/rua/project/ui/AnimatedWebpKt;->AnimatedWebp(Landroidx/compose/ui/Modifier;Ljava/lang/String;Ljava/lang/Object;Landroidx/compose/runtime/Composer;II)V
+Lplus/rua/project/ui/AnimatedWebpKt$$ExternalSyntheticLambda0;
+SPLplus/rua/project/ui/AnimatedWebpKt$$ExternalSyntheticLambda0;-><init>()V
+SPLplus/rua/project/ui/AnimatedWebpKt$$ExternalSyntheticLambda0;->invoke(Ljava/lang/Object;)Ljava/lang/Object;
+Lplus/rua/project/ui/AnimatedWebpKt$$ExternalSyntheticLambda1;
+SPLplus/rua/project/ui/AnimatedWebpKt$$ExternalSyntheticLambda1;-><init>(Landroidx/compose/animation/core/Animatable;)V
+SPLplus/rua/project/ui/AnimatedWebpKt$$ExternalSyntheticLambda1;->invoke(Ljava/lang/Object;)Ljava/lang/Object;
+Lplus/rua/project/ui/AnimatedWebpKt$$ExternalSyntheticLambda2;
+SPLplus/rua/project/ui/AnimatedWebpKt$$ExternalSyntheticLambda2;-><init>(Landroidx/compose/ui/Modifier;Ljava/lang/String;Ljava/lang/Object;II)V
+Lplus/rua/project/ui/AnimatedWebpKt$AnimatedWebp$1$1;
+SPLplus/rua/project/ui/AnimatedWebpKt$AnimatedWebp$1$1;-><init>(Landroidx/compose/animation/core/Animatable;Lkotlin/coroutines/Continuation;)V
+SPLplus/rua/project/ui/AnimatedWebpKt$AnimatedWebp$1$1;->create(Ljava/lang/Object;Lkotlin/coroutines/Continuation;)Lkotlin/coroutines/Continuation;
+SPLplus/rua/project/ui/AnimatedWebpKt$AnimatedWebp$1$1;->invokeSuspend(Ljava/lang/Object;)Ljava/lang/Object;
 Lplus/rua/project/ui/BottomCardKt;
 SPLplus/rua/project/ui/BottomCardKt;->$r8$lambda$MmxJZOraXJqgtb59adckNnYY5bg(Landroidx/compose/ui/semantics/SemanticsPropertyReceiver;)Lkotlin/Unit;
 SPLplus/rua/project/ui/BottomCardKt;->$r8$lambda$T_UOYYXhKodAWp_8kVjxIHHBmW0(Ljava/lang/String;Lkotlinx/datetime/LocalDate;Ljava/lang/String;Ljava/lang/String;Landroidx/compose/runtime/State;Landroidx/compose/runtime/Composer;I)Lkotlin/Unit;
diff --git a/core/src/main/kotlin/plus/rua/project/Platform.kt b/core/src/main/kotlin/plus/rua/project/Platform.kt
index 8608d19..1e0626d 100644
--- a/core/src/main/kotlin/plus/rua/project/Platform.kt
+++ b/core/src/main/kotlin/plus/rua/project/Platform.kt
@@ -10,7 +10,7 @@ import androidx.compose.ui.platform.LocalContext
  * @param webpFile WebP 文件名（如 "001.webp"）
  * @return 平台特定的资源 URI
  */
-fun getWebpUri(webpFile: String): String = "file:///android_asset/gifs/$webpFile"
+fun getWebpUri(webpFile: String): String = "file:///android_asset/animations/$webpFile"
 
 fun getAppIconUri(): String = "file:///android_asset/app_icon.webp?v=2"
 
diff --git a/core/src/main/kotlin/plus/rua/project/ui/AnimatedGif.kt b/core/src/main/kotlin/plus/rua/project/ui/AnimatedWebp.kt
similarity index 84%
rename from core/src/main/kotlin/plus/rua/project/ui/AnimatedGif.kt
rename to core/src/main/kotlin/plus/rua/project/ui/AnimatedWebp.kt
index 9a6bb4f..b641955 100644
--- a/core/src/main/kotlin/plus/rua/project/ui/AnimatedGif.kt
+++ b/core/src/main/kotlin/plus/rua/project/ui/AnimatedWebp.kt
@@ -15,11 +15,15 @@ import com.github.panpf.sketch.rememberAsyncImageState
 import com.github.panpf.sketch.request.ImageOptions
 import com.github.panpf.sketch.request.repeatCount
 import plus.rua.project.getWebpUri
+import plus.rua.project.shared.BuildConfig
 
 /**
- * WebP 动画文件名列表（001.webp ~ 152.webp）。
+ * WebP 动画文件名列表，由构建期 `BuildConfig.WEBP_FILES` 注入
+ * （见 `core/build.gradle.kts` 扫描 `assets/animations/` 的 `buildConfigField`）。
+ *
+ * `internal` 让同模块测试可直接访问（见 `AnimatedWebpFilesTest`）。
  */
-private val WEBP_FILES = (1..152).map { "${it.toString().padStart(3, '0')}.webp" }
+internal val WEBP_FILES: List<String> = BuildConfig.WEBP_FILES.toList()
 
 /**
  * 显示动画 WebP 图片，切换日期时随机选择一个。
@@ -31,7 +35,7 @@ private val WEBP_FILES = (1..152).map { "${it.toString().padStart(3, '0')}.webp"
  * @param seed 用于控制重新随机时机的 key，变化时重新选择 WebP
  */
 @Composable
-fun AnimatedGif(
+fun AnimatedWebp(
     modifier: Modifier = Modifier,
     contentDescription: String? = null,
     seed: Any? = null,
diff --git a/core/src/main/kotlin/plus/rua/project/ui/BottomCard.kt b/core/src/main/kotlin/plus/rua/project/ui/BottomCard.kt
index 75e5d0a..27df096 100644
--- a/core/src/main/kotlin/plus/rua/project/ui/BottomCard.kt
+++ b/core/src/main/kotlin/plus/rua/project/ui/BottomCard.kt
@@ -172,7 +172,7 @@ fun BottomCard(
                 )
             }
             Spacer(modifier = Modifier.height(12.dp))
-            AnimatedGif(
+            AnimatedWebp(
                 modifier = Modifier
                     .fillMaxWidth()
                     .height(140.dp)
diff --git a/core/src/main/kotlin/plus/rua/project/ui/CalendarMonthView.kt b/core/src/main/kotlin/plus/rua/project/ui/CalendarMonthView.kt
index 153f5fc..0285dfe 100644
--- a/core/src/main/kotlin/plus/rua/project/ui/CalendarMonthView.kt
+++ b/core/src/main/kotlin/plus/rua/project/ui/CalendarMonthView.kt
@@ -580,7 +580,7 @@ private fun BottomCardArea(
         slideAnim.animateTo(if (isYearView) 1f else 0f, tween(200))
     }
     val slideProgress = slideAnim.value
-    // 延迟一帧显示 BottomCard，避免 AnimatedGif 和 lunar 计算阻塞首帧
+    // 延迟一帧显示 BottomCard，避免 AnimatedWebp 和 lunar 计算阻塞首帧
     var hasLoaded by remember { mutableStateOf(false) }
     LaunchedEffect(Unit) {
         delay(32)
diff --git a/core/src/test/kotlin/plus/rua/project/ui/AnimatedWebpFilesTest.kt b/core/src/test/kotlin/plus/rua/project/ui/AnimatedWebpFilesTest.kt
new file mode 100644
index 0000000..2766739
--- /dev/null
+++ b/core/src/test/kotlin/plus/rua/project/ui/AnimatedWebpFilesTest.kt
@@ -0,0 +1,49 @@
+package plus.rua.project.ui
+
+import java.io.File
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+import org.junit.Test
+
+/**
+ * 守卫：运行期使用的 WebP 文件列表必须与 assets/animations/ 目录实际内容一致。
+ *
+ * 防止两类回归：
+ *  1. 有人把 BuildConfig 方案回退成硬编码 (1..152)，与目录脱钩后增删文件即隐性 bug
+ *  2. assets/animations/ 在 CI / 打包流程中意外丢失或被 Git LFS 过滤掉
+ *
+ * 注：当前实现里 WEBP_FILES 与目录都来自同一次构建期扫描，二者天然一致；
+ * 本测试的核心价值是锁定「两者一致」这个不变量，使上述回归一旦发生即立即失败。
+ */
+class AnimatedWebpFilesTest {
+
+    private val animationsDir = File("src/main/assets/animations")
+
+    @Test
+    fun webpFilesMatchDirectoryContents() {
+        assertTrue(animationsDir.exists(), "assets/animations 目录应存在: ${animationsDir.absolutePath}")
+
+        val onDisk = animationsDir.listFiles { f -> f.extension.equals("webp", ignoreCase = true) }
+            ?.map { it.name }
+            ?.sorted()
+            ?: emptyList()
+        assertTrue(onDisk.isNotEmpty(), "assets/animations 不应为空（若失败请检查 Git LFS / checkout 完整性）")
+
+        // WEBP_FILES 由构建期 BuildConfig 注入（见 core/build.gradle.kts 的 buildConfigField）
+        val inCode = WEBP_FILES.sorted()
+
+        assertEquals(onDisk, inCode, "WEBP_FILES 必须与 assets/animations/ 实际 webp 文件一一对应")
+    }
+
+    @Test
+    fun webpFilesUseZeroPaddedThreeDigitNames() {
+        // 锁定命名约定：NNN.webp（三位零填充），防止有人误改成 1.webp / 01.webp 等
+        val expected = Regex("""^\d{3}\.webp$""")
+        WEBP_FILES.forEach { name ->
+            assertTrue(
+                expected.matches(name),
+                "文件名 $name 不符合 NNN.webp 约定，getWebpUri 与 AnimatedWebp 依赖此格式",
+            )
+        }
+    }
+}
diff --git a/scripts/profile.sh b/scripts/profile.sh
index 8e3d403..036f7e8 100755
--- a/scripts/profile.sh
+++ b/scripts/profile.sh
@@ -225,7 +225,7 @@ run_scenario() {
 
         date_select)
             SCENARIO_NAME="点击日期选择"
-            SCENARIO_DESC="依次点击日历中不同位置的日期，测试 DayCell 重组和 AnimatedGif 动画性能"
+            SCENARIO_DESC="依次点击日历中不同位置的日期，测试 DayCell 重组和 AnimatedWebp 动画性能"
             echo ""
             echo "[场景] ${SCENARIO_NAME}"
             echo "  ${SCENARIO_DESC}"
@@ -1100,7 +1100,7 @@ EOF
             cat >> "${REPORT_FILE}" <<EOF
 - \`DayCell\` — 单个日期单元格重组（通过 transition label）
 - \`MonthView:Compose\` — 日期选中触发的整页重组
-- \`AnimatedGif\` 相关 trace（如果存在）— 选中动画
+- \`AnimatedWebp\` 相关 trace（如果存在）— 选中动画
 - 查找是否有连续多帧超过 16.67ms（选中动画期间）
 EOF
             ;;