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, 5 insertions, 4 deletions

diff --git a/src/lib/Tools/EpisodeDiscussionCollector.svelte b/src/lib/Tools/EpisodeDiscussionCollector.svelte
index 68addbdf..2bbefc0a 100644
--- a/src/lib/Tools/EpisodeDiscussionCollector.svelte
+++ b/src/lib/Tools/EpisodeDiscussionCollector.svelte
@@ -6,6 +6,7 @@ import { clearAllParameters } from "../Utility/parameters";
 import Skeleton from "$lib/Loading/Skeleton.svelte";
 import InputTemplate from "./InputTemplate.svelte";
 import tooltip from "$lib/Tooltip/tooltip";
+import locale from "$stores/locale";
 
 let submission = "";
 
@@ -46,17 +47,17 @@ onMount(clearAllParameters);
         {/each}
       </ol>
     {:catch}
-      <p>Threads could not be loaded. You might have been rate-limited.</p>
+      <p>{$locale().tools.episodeDiscussion?.rateLimit}</p>
       <p>
-        Try again in a few minutes. If the problem persists, please contact <a
+        {$locale().tools.episodeDiscussion?.contactSupport?.split('@fuwn')[0]}<a
           href="https://anilist.co/user/fuwn"
           target="_blank">@fuwn</a
-        > on AniList.
+        >{$locale().tools.episodeDiscussion?.contactSupport?.split('@fuwn')[1]}
       </p>
     {/await}
   {:else}
     <Spacer />
 
-    Enter a username to search for to continue.
+    {$locale().tools.episodeDiscussion?.enterUsername}
   {/if}
 </InputTemplate>