chore: re-release Theme Expansion as v1.2.3

Hab vergessen die repo.json wieder mit zu bumpen, deshalb hat
Dalamud den v1.2.2-Release nicht angenommen — komplette Manifest-
Bump-Checkliste diesmal durchgezogen: csproj, yaml-Description +
Changelog, repo.json (AssemblyVersion + TestingAssemblyVersion +
drei DownloadLink*-URLs + Description + Changelog), CHANGELOG.md,
ROADMAP.md, README.md, Forge-Post-Datei. Inhalt unverändert
gegenüber v1.2.2.

HellionChat/HellionChat.csproj

@@ -4,7 +4,7 @@
              0.1.0 is our bootstrap release; the underlying Chat 2 base is
              called out in the yaml changelog so users can see what it
              derives from. -->
-        <Version>1.2.2</Version>
+        <Version>1.2.3</Version>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
         <!-- Honor packages.lock.json on restore so floating version ranges

HellionChat/HellionChat.yaml

@@ -36,7 +36,7 @@ description: |-
   JSON-based custom-theme authoring. Settings rebuilt around a card
   grid with section detail views. See docs/THEME-AUTHORING.md.
 
-  v1.2.2 — Theme catalogue grown to nine built-in themes:
+  v1.2.3 — Theme catalogue grown to nine built-in themes:
   Hellion Arctic, Hellion Spectrum (CVD-safe Deuteran/Protan),
   Chat 2 Klassik, Event Horizon, Moonlit Bloom, Mint Grove,
   Night Blue, Indigo Violet, Forge Merchantman.
@@ -60,7 +60,7 @@ tags:
   - Replacement
   - Privacy
 changelog: |-
-  **Hellion Chat 1.2.2 — Theme Expansion**
+  **Hellion Chat 1.2.3 — Theme Expansion**
 
   Four new built-in themes round out the picker. No engine changes,
   no settings touched — just more colour options.