fix(theme): R10 S1 follow-ups — dedicated info token + restore collapsed hovers

- Add --info/--info-fg (blue; dark #60a5fa / light #2563eb) so info notifications
  stop borrowing --accent, which collided with a status colour in schemes whose
  accent shares its hue (YouTube red = error, Slate orange = warn, Matrix/Forest
  green = success). Toaster info tone accent -> info.
- Restore hover feedback the codemod flattened: 'bg-X ... hover:bg-X' /
  'text-X ... hover:text-X' collapsed to a no-op once both shades mapped to one
  shadeless token. Reuse the house hover:opacity-{80,90} idiom (ConfirmProvider
  danger button, DownloadCenter error link).

frontend/src/components/ConfirmProvider.tsx

@@ -118,7 +118,7 @@ export function ConfirmProvider({ children }: { children: ReactNode }) {
                   multi ? "w-full" : ""
                 } ${
                   c.danger
-                    ? "bg-danger text-danger-fg hover:bg-danger"
+                    ? "bg-danger text-danger-fg hover:opacity-90"
                     : "bg-accent text-accent-fg hover:opacity-90"
                 }`}
               >

frontend/src/components/DownloadCenter.tsx

@@ -253,7 +253,7 @@ function DownloadRow({
           {job.status === "error" ? (
             <button
               onClick={() => onShowError?.(job)}
-              className="text-danger hover:text-danger inline-flex items-center gap-1 truncate"
+              className="text-danger hover:opacity-80 inline-flex items-center gap-1 truncate"
               title={t("downloads.errors.fail.title")}
             >
               · {t(`downloads.errors.fail.cat.${job.error_code || "unknown"}.short`)}

frontend/src/components/Toaster.tsx

@@ -4,7 +4,7 @@ import { AlertCircle, AlertTriangle, CheckCircle2, Info, X, XCircle } from "luci
 import { dismiss, getActiveToasts, subscribe, type NotifLevel } from "../lib/notifications";
 
 export const LEVEL_STYLE: Record<NotifLevel, { icon: typeof Info; color: string; bar: string }> = {
-  info: { icon: Info, color: "text-accent", bar: "bg-accent" },
+  info: { icon: Info, color: "text-info", bar: "bg-info" },
   success: { icon: CheckCircle2, color: "text-success", bar: "bg-success" },
   warning: { icon: AlertTriangle, color: "text-warn", bar: "bg-warn" },
   error: { icon: AlertCircle, color: "text-danger", bar: "bg-danger" },