feat: remove legacy OpenCode runtime

Cut product flows over to Coding/Pi and retain only the migration-owned v1 boundary. Promote supported native optional packages because electron-builder omitted pnpm transitive optional closure from the packaged ASAR.

src/i18n/locales/zh/common.json

@@ -10,9 +10,7 @@
     "settings": "设置",
     "devConsole": "开发者控制台",
     "models": "模型",
-    "deleteSessionConfirm": "确定要删除对话 \"{{label}}\" 吗？",
-    "opencodePage": "Makelore 页面",
-    "opencodeDreams": "梦境"
+    "deleteSessionConfirm": "确定要删除对话 \"{{label}}\" 吗？"
   },
   "actions": {
     "save": "保存",

src/i18n/locales/zh/setup.json

@@ -40,7 +40,7 @@
     "viewLogs": "查看日志",
     "recheck": "重新检查",
     "nodejs": "Node.js 运行时",
-    "opencode": "Makelore 运行时",
+    "codingRuntime": "Makelore 编程运行时",
     "startRuntime": "启动运行时",
     "progress": {
       "label": "检测进度",
@@ -145,7 +145,7 @@
     "getStarted": "开始使用"
   },
   "defaultSkills": {
-    "opencode": {
+    "codingRuntime": {
       "name": "Makelore",
       "description": "AI 编程助手后端"
     },