refactor(locale): move hardcoded UI strings into english locale

Adds optional namespaces (common, errors, commandPalette, headTitle,
notifications, schedule, events, home, reader, routes, badgePreview,
badgeWall) and extends existing ones (settings.*, lists.*, tools.*,
user.*, hololive.*) on the Locale interface. New fields are optional
so japanese.ts can omit them; svelte-i18n's fallbackLocale handles
the runtime miss.

HeadTitle gains an optional routeKey prop for type-safe lookup.
defaultActions becomes a factory so the command palette re-reads
locale on language toggle. The existing JP feedback translation
in routes/settings is preserved via japanese.ts.

Out of scope (kept hardcoded): service-worker.ts, app.html,
Landing*.svelte, tools.ts registry, Easter Event 2025 pages.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/Tools/InputTemplate.svelte b/src/lib/Tools/InputTemplate.svelte
index c90d9b1c..c9d96dfb 100644
--- a/src/lib/Tools/InputTemplate.svelte
+++ b/src/lib/Tools/InputTemplate.svelte
@@ -3,6 +3,7 @@ import Spacer from "$lib/Layout/Spacer.svelte";
 import { clearAllParameters } from "$lib/Utility/parameters";
 import { onMount } from "svelte";
 import SettingHint from "$lib/Settings/SettingHint.svelte";
+import locale from "$stores/locale";
 
 export let field: string;
 export let submission: string;
@@ -46,7 +47,7 @@ onMount(() => clearAllParameters(saveParameters));
 
         onSubmit();
       }}
-      title="Or click your Enter key"
+      title={$locale().tools.input?.pressEnter}
       data-umami-event={event}
     >
       {submitText}