chore(release): publish Memmy v1.0.5

.github/release-notes/v1.0.5.md

@@ -28,3 +28,7 @@
 - Consolidated macOS and Windows packaging behind parameterized scripts for version, architecture, edition, and signing mode.
 - Desktop packages now exclude dependency tests, documentation, examples, and coverage files from the runtime payload.
 - Packaged builds now prepare and include the default local embedding model as an application resource.
+
+## Artifact verification
+
+- Before publication, all four signed installers were downloaded again from OSS and matched their published Content-MD5 and object size; both macOS disk images also passed `hdiutil verify`.