fix(recipes): polish deleted-LoRA reconnect panel UI

- fix .reconnect-input overflow (calc(100% - 20px) -> border-box 100%)
- replace nested-card border/background with a dashed top separator
- route reconnect copy through translate(); add recipes.resources
  .reconnectInstructions/reconnectExample/reconnectPlaceholder keys
  and translate them in all 9 locales
- show reconnect failures inline in the panel (role=alert) instead of
  a transient toast; errors clear on input/show/hide
- drop dead .reconnect-instructions code CSS; add regression test

locales/ja.json

@@ -903,6 +903,9 @@
             "preparingDownload": "ダウンロードを準備中...",
             "reconnect": "再接続",
             "reconnectTooltip": "ローカルの LoRA と再接続",
+            "reconnectInstructions": "再接続する LoRA の構文または名前を入力してください：",
+            "reconnectExample": "例：<lora:name:1> または名前のみ",
+            "reconnectPlaceholder": "LoRA 名または構文を入力",
             "viewOnCivitai": "CivitAI で表示",
             "openLoraDetails": "LoRA ライブラリで {name} を表示",
             "openCheckpointDetails": "モデルライブラリで {name} を表示"