chore(release): bump to v1.0.3

v1.0.2 tag was claimed before the DownloadLink fix shipped, so the
content moves to v1.0.3. No code changes — manifest, repo.json,
CHANGELOG and README version refs roll forward; DownloadLink* URLs
now point to v1.0.3/latest.zip.

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>1.0.2</Version>
+        <Version>1.0.3</Version>
         <ImplicitUsings>enable</ImplicitUsings>
         <!-- Honor packages.lock.json on restore so floating version ranges
              don't silently drift between machines or CI runs. -->

HellionChat/HellionChat.yaml

@@ -49,7 +49,7 @@ tags:
   - Replacement
   - Privacy
 changelog: |-
-  **Hellion Chat 1.0.2 — Polish patch**
+  **Hellion Chat 1.0.3 — Polish patch**
 
   - New: optionally hide chat (and every other plugin window) while the
     New Game+ menu is open. Toggle in Settings → Window → Frame, default