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

frontend/public/locales/en.json

@@ -162,7 +162,7 @@
                   "sect1_patch_desc_1_post":  "(DiffPatch) for fast \u0026 lightweight incremental updates.",
                   "sect1_patch_desc_2_pre":  "Supports",
                   "sect1_patch_desc_2_post":  ", and custom diff formats.",
-                  "sect2_title":  "FireflyGo Chat Commands",
+                  "sect2_title":  "GaCy-GO Chat Commands",
                   "sect2_desc_pre":  "Below are in-game chat commands you can use. Some commands require you to enable",
                   "sect2_desc_bold":  "Theorycraft Mode",
                   "sect2_desc_post":  ".",
@@ -230,7 +230,7 @@
                   "p1_pre":  "Hello! We are ",
                   "p1_post":  ", a developer team passionate about building useful tools and improving user experiences.",
                   "p2_pre":  "I created a lightweight and modern ",
-                  "p2_highlight":  "Game Launcher",
+                  "p2_highlight": "G Launcher",
                   "p2_post":  " to help users easily launch and manage their games with better performance and simplicity.",
                   "p3_pre":  "The launcher is built using ",
                   "p3_mid":  ", with a clean and responsive interface styled with ",
@@ -245,7 +245,7 @@
                          "sect1_p1_pre":  "This site is another version of ",
                          "sect1_p1_tool":  "Firefly Tools ",
                          "sect1_p1_mid":  "developed by ",
-                         "sect1_p1_author":  "Firefly Shelter",
+                         "sect1_p1_author":  "GaCy",
                          "sect1_master_site":  "Master Website",
                          "sect1_p2_pre":  "The original tool was created by a third-party developer named ",
                          "sect1_p2_author":  "Amazing",
@@ -254,13 +254,13 @@
                          "sect2_title":  "Main Features",
                          "sect2_feat1":  "Configure characters, light cones, relics, traces, and eidolons easily in your browser.",
                          "sect2_feat2_pre":  "Instantly apply setups to ",
-                         "sect2_feat2_server":  "Firefly GO Server",
+                         "sect2_feat2_server":  "GaCy-GO Server",
                          "sect2_feat2_mid":  " using ",
                          "sect2_feat2_conn":  "Connect PS",
                          "sect2_feat2_post":  " — no manual file uploads required.",
                          "sect2_feat3_title":  "Extra Settings",
                          "sect2_feat3_desc_pre":  "Enhance your ",
-                         "sect2_feat3_desc_server":  "Firefly GO Server",
+                         "sect2_feat3_desc_server":  "GaCy-GO Server",
                          "sect2_feat3_desc_post":  " experience with extra features:",
                          "sect2_feat3_ui":  "Hidden Game UI",
                          "sect2_feat3_ui_desc":  "— remove the entire game interface.",
@@ -302,11 +302,11 @@
                      "sect3_place":  "Then place ",
                      "sect3_place_post":  " into your game directory.",
                      "sect4_title":  "How to Use Web App",
-                     "sect4_sub1":  "For Firefly GO Local",
+                     "sect4_sub1":  "For GaCy-GO Local",
                      "sect4_sub1_step1_pre":  "Launch the ",
                      "sect4_sub1_step1_game":  "game",
                      "sect4_sub1_step1_mid":  " and your ",
-                     "sect4_sub1_step1_server":  "Firefly GO Server (PS)",
+                     "sect4_sub1_step1_server":  "GaCy-GO Server (PS)",
                      "sect4_sub1_step1_post":  ".",
                      "sect4_sub1_step2":  "Open one of the web analysis tools.",
                      "sect4_sub1_step3_pre":  "Go to ",