feat(phase1): rebrand to TTRPG Player and drop Git updates feed

Rename product to TTRPG Player (TTRPGPlayer / com.ttrpgplayer.app), use .ttrpg.zip for new saves while keeping .dnd.zip import, accept TTRPG- and DND- license keys on client, and remove sync-update-feed plus CI push to DndGamePlayerUpdates.

Co-authored-by: Cursor <cursoragent@cursor.com>

package.json

@@ -1,7 +1,7 @@
 {
-  "name": "DndGamePlayer",
+  "name": "TTRPGPlayer",
   "version": "1.0.15",
-  "description": "DNDGamePlayer — редактор и проигрыватель игр",
+  "description": "TTRPG Player — редактор и проигрыватель НРИ",
   "main": "dist/main/index.cjs",
   "scripts": {
     "dev": "node scripts/dev.mjs",
@@ -70,9 +70,9 @@
     "yazl": "^3.3.1"
   },
   "build": {
-    "appId": "com.dndplayer.app",
-    "productName": "DNDGamePlayer",
-    "copyright": "Copyright © DNDGamePlayer",
+    "appId": "com.ttrpgplayer.app",
+    "productName": "TTRPGPlayer",
+    "copyright": "Copyright © TTRPGPlayer",
     "directories": {
       "output": "release",
       "buildResources": "build"
@@ -144,8 +144,8 @@
         }
       ],
       "category": "Game",
-      "maintainer": "DNDGamePlayer",
-      "synopsis": "DNDGamePlayer — редактор и проигрыватель игр",
+      "maintainer": "TTRPGPlayer",
+      "synopsis": "TTRPG Player — tabletop RPG editor and player",
       "icon": "build/icon.png"
     },
     "appImage": {
@@ -159,7 +159,7 @@
     },
     "publish": {
       "provider": "generic",
-      "url": "https://git.mailib.ru/ifontosh/DndGamePlayerUpdates/raw/branch/updates/"
+      "url": "https://updates.invalid.ttrpg/"
     }
   }
 }