add missing i18n for post view

src/routes/+layout.svelte

@@ -6,12 +6,15 @@
     import { account } from '$lib/stores/account.js';
     import { parseAccount } from '$lib/account.js';
     import { unread_notif_count, last_read_notif_id } from '$lib/notifications.js';
+    import Lang from '$lib/lang';
 
     import Navigation from '$lib/ui/Navigation.svelte';
     import Modal from '@cf/ui/Modal.svelte';
     import Composer from '@cf/ui/Composer.svelte';
     import Widgets from '$lib/ui/Widgets.svelte';
 
+    const lang = Lang('en_GB');
+
     let show_composer = false;
 
     async function init() {
@@ -48,7 +51,7 @@
     <main>
         {#await init()}
             <div class="loading throb">
-                <span>just a moment...</span>
+                <span>{lang.string('loading')}</span>
             </div>
         {:then}
             <slot></slot>

src/routes/+page.svelte

@@ -2,7 +2,7 @@
     import { page } from '$app/stores';
     import { account } from '$lib/stores/account.js';
     import { timeline, getTimeline } from '$lib/timeline.js';
-    import Lang from '$lib/lang.js';
+    import Lang from '$lib/lang';
 
     import LoginForm from '$lib/ui/LoginForm.svelte';
     import Button from '$lib/ui/Button.svelte';

src/routes/[server]/[account]/[post]/+page.svelte

@@ -4,13 +4,16 @@
     import { app } from '$lib/client/app.js';
     import { parsePost } from '$lib/post.js';
     import { goto, afterNavigate } from '$app/navigation';
-    import { base } from '$app/paths'
+    import { base } from '$app/paths';
+    import Lang from '$lib/lang';
 
     import Post from '$lib/ui/post/Post.svelte';
     import Button from '$lib/ui/Button.svelte';
 
     export let data;
 
+    const lang = Lang('en_GB');
+
     let post = fetchPost(data.post_id);
     let error = false;
     let previous_page = base;
@@ -68,7 +71,7 @@
 
 {#await post}
     <div class="loading throb">
-        <span>loading post...</span>
+        <span>{lang.string('post.loading')}</span>
     </div>
 {:then post}
     {#if error}
@@ -77,12 +80,12 @@
         <header>
             {#if previous_page}
                 <nav>
-                    <Button centered on:click={() => {goto(previous_page)}}>Back</Button>
+                    <Button centered on:click={() => {goto(previous_page)}}>{lang.string('navigation.back')}</Button>
                 </nav>
             {/if}
             <img src={post.account.avatar_url} type={post.account.avatar_type || "image/png"} alt="" width="40" height="40" class="header-avatar" loading="lazy" decoding="async">
             <h1>
-                Post by {@html post.account.rich_name}
+                {@html lang.string('post.by').replaceAll('%1', post.account.rich_name)}
             </h1>
         </header>
         

src/routes/notifications/+page.svelte

@@ -4,7 +4,7 @@
     import { goto } from '$app/navigation';
     import { page } from '$app/stores';
     import Notification from '$lib/ui/Notification.svelte';
-    import Lang from '$lib/lang.js';
+    import Lang from '$lib/lang';
 
     const lang = Lang('en_GB');