feat: 移植 B50 成绩图，并把项目名从 purarine 改回 ichino

海报从 Empurple 的 Best50ImageRenderer/ImageBuilder 移植：按原始像素坐标
(1762x1850 画布、300x100 卡片、5 列、行距 120) 叠加在 base.png 上，底图里
已画好的面板/药丸标签/页脚不重复绘制；页面外壳走 Ichino 的 Material 3。

RatingCalculator 的达成率分档改成单张有序表，避免偏移与评级错位；
RA 与评级由 test/rating_calculator_test.dart 的边界用例锁定。

GetUserRatingApi 只需要 userId(Cookie 可选)，所以 Preview API 模式、未登录
游戏服务器时也能出图，只是没有 FC/AP/FS 标记。导出用 RepaintBoundary 抓
全尺寸 PNG：原生走 share_plus(不支持文件分享的平台回退为落盘并提示路径)，
web 走下载。

BEST35 与 BEST15 改为各自独立排版。原先沿用 Empurple 的跨列表全局序号，
BEST35 没打满时 BEST15 会整体上移混进上半区。

path_provider 会经 path_provider_android 2.3.x 拖入 jni 插件，而 jni 把
windows/linux 也声明成 ffiPlugin，桌面构建因此去链接 jvm.lib 并失败，
故用 dependency_overrides 钉住 path_provider_android <2.3.0。

pubspec.lock

@@ -57,6 +57,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.2"
+  code_assets:
+    dependency: transitive
+    description:
+      name: code_assets
+      sha256: "828110d598123b5ea96c00c9f3c72105bf79f8ee36c20a39b26209ade421ec57"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
   collection:
     dependency: transitive
     description:
@@ -113,6 +121,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.2.0"
+  ffi_leak_tracker:
+    dependency: transitive
+    description:
+      name: ffi_leak_tracker
+      sha256: "4093d4ef9ca06ffe2786e73bfb25e22aa92112b9bb4ec941f11e3e6b61489a97"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.2"
   file:
     dependency: transitive
     description:
@@ -153,6 +169,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.9.3+5"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      sha256: b6dc7065e46c974bc7c5f143080a6764ec7a4be6da1285ececdc37be96de53be
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -184,6 +208,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  hooks:
+    dependency: transitive
+    description:
+      name: hooks
+      sha256: eaac480a35ec0814146c2c48d96aaa829e0e44a7662c88ae84c9edf4bc35651f
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.0"
   http:
     dependency: "direct main"
     description:
@@ -304,6 +336,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.1.0"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: c8245ada5f1717ed44271ed1c26b8ce85ca3228fd2ffdb75468ab01979309d61
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
   matcher:
     dependency: transitive
     description:
@@ -336,6 +376,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.0"
+  objective_c:
+    dependency: transitive
+    description:
+      name: objective_c
+      sha256: ad56fd53a78ff6b1472fa59ff2a4e8b8ccabafc586fc263a1dfad0b99b5553e3
+      url: "https://pub.dev"
+    source: hosted
+    version: "9.6.0"
   path:
     dependency: transitive
     description:
@@ -344,6 +392,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.9.1"
+  path_provider:
+    dependency: transitive
+    description:
+      name: path_provider
+      sha256: a7f4874f987173da295a61c181b8ee71dab59b332a486b391babf26a1b884825
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.6"
+  path_provider_android:
+    dependency: "direct overridden"
+    description:
+      name: path_provider_android
+      sha256: "149441ca6e4f38193b2e004c0ca6376a3d11f51fa5a77552d8bd4d2b0c0912ba"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.23"
+  path_provider_foundation:
+    dependency: transitive
+    description:
+      name: path_provider_foundation
+      sha256: "2a376b7d6392d80cd3705782d2caa734ca4727776db0b6ec36ef3f1855197699"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.6.0"
   path_provider_linux:
     dependency: transitive
     description:
@@ -400,6 +472,38 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.5.0"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "261236774e8b1d69cfc6b9eabbc96c40f25e7a2d6b171f3385d4f65d5734fb24"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.1"
+  record_use:
+    dependency: transitive
+    description:
+      name: record_use
+      sha256: "1cb8564af8d43b464294411db9217f5ec04891c6f22ee2c32d73ae05e88a6bd2"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  share_plus:
+    dependency: "direct main"
+    description:
+      name: share_plus
+      sha256: "34f00f9becd2743c1fb05363d624f9f70d37f7ccdcdda47450bc0b8c9d327b8c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "13.3.0"
+  share_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: share_plus_platform_interface
+      sha256: "365ef7379fc22507256adda3385152942ffce08935452bc972c2e52a0bebae41"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.2.0"
   shared_preferences:
     dependency: "direct main"
     description:
@@ -517,6 +621,46 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.4.0"
+  url_launcher_linux:
+    dependency: transitive
+    description:
+      name: url_launcher_linux
+      sha256: "10f86fef4c2c43563fa6c211ff9cf757adf4d3ab762c56bd430664a947d70cd0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.3"
+  url_launcher_platform_interface:
+    dependency: transitive
+    description:
+      name: url_launcher_platform_interface
+      sha256: "552f8a1e663569be95a8190206a38187b531910283c3e982193e4f2733f01029"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.2"
+  url_launcher_web:
+    dependency: transitive
+    description:
+      name: url_launcher_web
+      sha256: "85c81589622fbc87c1c683aaea164d3604a7777495a79d91e39ffcdec39ddb34"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.3"
+  url_launcher_windows:
+    dependency: transitive
+    description:
+      name: url_launcher_windows
+      sha256: "6c5ad3f22cd4c38e089b81963b3cd7bb83b111b2df5dce008bb066162f42e429"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.6"
+  uuid:
+    dependency: transitive
+    description:
+      name: uuid
+      sha256: "9b129329f58692f6e6578329498a8fe9fbe98f090beb764ffbb8ee2eadd01dcd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.6.0"
   vector_math:
     dependency: transitive
     description:
@@ -541,6 +685,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.1"
+  win32:
+    dependency: transitive
+    description:
+      name: win32
+      sha256: a0b93865d5644f11cf6a8c3f6db909f1ec168958b5805f6cc684adea957cd63d
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.4.0"
   xdg_directories:
     dependency: transitive
     description:
@@ -549,6 +701,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.0"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: f67cdd8e07d3c6329146aaef1ba043542b3134c12489f553ca9a7435d1068aea
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.4"
 sdks:
   dart: ">=3.12.0 <4.0.0"
-  flutter: ">=3.38.0"
+  flutter: ">=3.38.4"