chore(release): bump version to 0.2.1

Patch release carrying the Windows silent-startup fix (self-contained publish + hardened OnStartup). Bump the Linux crate (.deb + --version) and macOS CFBundleShortVersionString to 0.2.1; Windows installer/zip versions are tag-driven.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: Adron

linux-ubuntu/Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "interlinedlist-sync"
-version = "0.2.0"
+version = "0.2.1"
 edition = "2021"
 
 # Forward the `gtk` feature to tray-app so the sign-in dialog is compiled in

linux-ubuntu/crates/interlinedlist-sync/Cargo.toml

@@ -11,7 +11,7 @@
     <key>CFBundleVersion</key>
     <string>1</string>
     <key>CFBundleShortVersionString</key>
-    <string>0.2.0</string>
+    <string>0.2.1</string>
     <key>CFBundleExecutable</key>
     <string>InterlinedSync</string>
     <key>CFBundlePackageType</key>