✨ feat(skill): add delete/remove actions to settings/skill items (#15708)

* ✨ feat: add delete/uninstall actions to settings/skill items

- LobehubSkillItem: show compact `...` dropdown in list mode for connected items with Disconnect action (revokes OAuth)
- KlavisSkillItem: show compact `...` dropdown in list mode for connected/pending servers with Remove action (true delete via removeKlavisServer)
- ConnectorDetail: add Delete button for custom (mcp) connectors; calls deleteConnector + notifies parent via onDelete
- SkillDetail / Page: thread onDelete callback so selecting null after deletion triggers auto-select of next item
- Locales: add tools.klavis.remove / removeConfirm.title / removeConfirm.desc in en-US, zh-CN, and default source

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(skill): gate Klavis remove by canEdit and clear selected after removal

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(skill): show dropdown for all Klavis/Lobehub items in list mode

Previously, the ... button was gated behind `server` (Klavis) and
`isConnected` (LobehubSkill), so disconnected/never-connected items
showed no actions. Remove those guards so the dropdown always renders
in list mode. handleRemove/handleDisconnect now skip the server call
when no server instance exists and instead clear the selected item.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(skill): move delete/uninstall actions from list dropdown to detail panel

- Remove heavy ... dropdown from KlavisSkillItem / LobehubSkillItem list items
- Add danger Uninstall button to builtin-skill detail header (matches ConnectorDetail style)
- Add slim action bar with Uninstall to agent-skill detail panel
- All actions respect canEdit / canCreate permissions with confirmModal gating

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

locales/en-US/setting.json

@@ -1178,6 +1178,9 @@
   "tools.klavis.disconnect": "Disconnect",
   "tools.klavis.disconnected": "Disconnected",
   "tools.klavis.error": "Error",
+  "tools.klavis.remove": "Remove",
+  "tools.klavis.removeConfirm.desc": "{{name}} will be permanently removed from your connected services. This action cannot be undone.",
+  "tools.klavis.removeConfirm.title": "Remove {{name}}?",
   "tools.klavis.groupName": "Klavis Tools",
   "tools.klavis.manage": "Manage Klavis",
   "tools.klavis.manageTitle": "Manage Klavis Integration",

locales/zh-CN/setting.json

@@ -1178,6 +1178,9 @@
   "tools.klavis.disconnect": "断开连接",
   "tools.klavis.disconnected": "已断开连接",
   "tools.klavis.error": "错误",
+  "tools.klavis.remove": "移除",
+  "tools.klavis.removeConfirm.desc": "{{name}} 将从您的已连接服务中永久移除，此操作不可撤销。",
+  "tools.klavis.removeConfirm.title": "移除 {{name}}？",
   "tools.klavis.groupName": "Klavis 工具",
   "tools.klavis.manage": "管理 Klavis",
   "tools.klavis.manageTitle": "管理 Klavis 集成",