fix(geschichte): use mode-aware journey tokens for interlude and badge

The reader interlude and the LESEREISE badge hardcoded orange-50/200/
400/700, leaving light text on a light background in dark mode. Switch
to the existing journey-tint/journey/journey-border tokens already used
by the list and editor rows.

Closes #801
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/specs/lesereisen-reader-spec.html

@@ -631,7 +631,7 @@
             <tr><td>Bedingte Logik</td><td>{#if geschichte.type === 'JOURNEY'} JourneyReader {:else} StoryReader {/if}</td><td>in +page.svelte von /geschichten/[id]</td></tr>
             <tr><td>Artikel-Container</td><td>max-w-3xl mx-auto px-4 py-8</td><td>gleich wie StoryReader</td></tr>
             <tr><td>Artikel-Sheet</td><td>rounded-sm border border-line bg-sheet shadow-sm px-5 py-6 sm:px-10 sm:py-10</td><td>Lesebogen-Panel zwischen Canvas und weißen Karten (Token --color-sheet), gleich wie Story (R-2); BackButton bleibt außerhalb</td></tr>
-            <tr><td>Journey-Badge</td><td>inline-flex px-2 py-px rounded-sm text-[10px] font-bold uppercase tracking-widest bg-orange-50 text-orange-700 border border-orange-200 mb-2</td><td>über dem Titel; nicht für STORY</td></tr>
+            <tr><td>Journey-Badge</td><td>inline-flex px-2 py-px rounded-sm text-[10px] font-bold uppercase tracking-widest bg-journey-tint text-journey border border-journey-border mb-2</td><td>über dem Titel; nicht für STORY</td></tr>
             <tr><td>Titel</td><td>font-serif text-3xl text-ink leading-tight mb-4</td><td>gleich wie Story</td></tr>
             <tr><td>Metabar</td><td>flex items-center gap-3 pb-4 border-b border-subtle mb-4</td><td>gleich wie Story</td></tr>
             <tr><td>Bearbeiten/Löschen</td><td>nur BLOG_WRITE; auf Mobile im ··· BottomSheet</td><td>gleich wie Story</td></tr>
@@ -647,7 +647,7 @@
             <tr><td>Annotation</td><td>mt-3 pl-3 border-l-2 border-brand-mint bg-muted rounded-r-sm py-1.5 pr-2</td><td>nur rendern wenn item.note vorhanden</td></tr>
             <tr><td>Annotations-Text</td><td>text-base italic text-ink-2 leading-relaxed</td><td></td></tr>
             <tr class="grp"><td colspan="3">Interlude-Item</td></tr>
-            <tr><td>Interlude-Block</td><td>pl-3 border-l-2 border-orange-400 bg-orange-50 rounded-r-sm py-2 pr-3 my-4</td><td>item.document === null</td></tr>
+            <tr><td>Interlude-Block</td><td>pl-3 border-l-2 border-journey-border bg-journey-tint rounded-r-sm py-2 pr-3 my-4</td><td>item.document === null</td></tr>
             <tr><td>Interlude-Text</td><td>text-base italic text-ink leading-relaxed</td><td>item.note; plaintext</td></tr>
             <tr class="grp"><td colspan="3">Mobile</td></tr>
             <tr><td>··· Menü</td><td>ml-auto text-ink-3; öffnet BottomSheet mit Bearbeiten + Löschen</td><td>BLOG_WRITE; gleich wie Story</td></tr>