fix: resolve mermaid elk diagram error, upgrade high-res appicon and complete rebranding to G-Launcher/GaCy

frontend/public/locales/zh.json

@@ -162,7 +162,7 @@
                   "sect1_patch_desc_1_post":  "（DiffPatch）进行快速轻量的增量更新。",
                   "sect1_patch_desc_2_pre":  "支持",
                   "sect1_patch_desc_2_post":  "以及自定义 diff 格式。",
-                  "sect2_title":  "FireflyGo 聊天指令",
+                  "sect2_title":  "GaCy-GO 聊天指令",
                   "sect2_desc_pre":  "以下是您可以在游戏中使用的聊天指令。部分指令需要您开启",
                   "sect2_desc_bold":  "Theorycraft 模式",
                   "sect2_desc_post":  "。",
@@ -245,7 +245,7 @@
                          "sect1_p1_pre":  "本网站是 ",
                          "sect1_p1_tool":  "Firefly Tools ",
                          "sect1_p1_mid":  "的另一个版本，由 ",
-                         "sect1_p1_author":  "Firefly Shelter",
+                         "sect1_p1_author":  "GaCy",
                          "sect1_master_site":  "主站",
                          "sect1_p2_pre":  "原始工具由名为 ",
                          "sect1_p2_author":  "Amazing",
@@ -256,11 +256,11 @@
                          "sect2_feat2_pre":  "使用 ",
                          "sect2_feat2_server":  "Connect PS",
                          "sect2_feat2_mid":  " 立即将设置应用到 ",
-                         "sect2_feat2_conn":  "Firefly GO Server",
+                         "sect2_feat2_conn":  "GaCy-GO Server",
                          "sect2_feat2_post":  " —— 无需手动上传文件。",
                          "sect2_feat3_title":  "额外设置",
                          "sect2_feat3_desc_pre":  "使用额外功能增强您的 ",
-                         "sect2_feat3_desc_server":  "Firefly GO Server",
+                         "sect2_feat3_desc_server":  "GaCy-GO Server",
                          "sect2_feat3_desc_post":  " 体验：",
                          "sect2_feat3_ui":  "隐藏游戏 UI",
                          "sect2_feat3_ui_desc":  "—— 移除整个游戏界面。",
@@ -302,11 +302,11 @@
                      "sect3_place":  "然后将 ",
                      "sect3_place_post":  " 放入您的游戏目录。",
                      "sect4_title":  "如何使用 Web 应用",
-                     "sect4_sub1":  "适用于 Firefly GO 本地端",
+                     "sect4_sub1":  "适用于 GaCy-GO 本地端",
                      "sect4_sub1_step1_pre":  "启动 ",
                      "sect4_sub1_step1_game":  "游戏",
                      "sect4_sub1_step1_mid":  " 和您的 ",
-                     "sect4_sub1_step1_server":  "Firefly GO 服务器 (PS)",
+                     "sect4_sub1_step1_server":  "GaCy-GO 服务器 (PS)",
                      "sect4_sub1_step1_post":  "。",
                      "sect4_sub1_step2":  "打开其中一个 Web 分析工具。",
                      "sect4_sub1_step3_pre":  "转到 ",