feat(menu): show current version on the Check-for-Updates entry

Appends ' · v{CARGO_PKG_VERSION}' to every state of the version-action
menu item so users can see what they are running without opening an
About dialog. Reads as 'Check for updates · v0.1.7', 'Up to date ·
v0.1.7', etc. Winget channel decoration is preserved as a trailing
parenthetical.

Bumps version to 0.1.7.

src/app.rs

@@ -1067,9 +1067,13 @@ fn version_action_label(snap: &ContextMenuSnapshot) -> String {
         UpdateStatus::Applying => snap.strings.applying_update.clone(),
         UpdateStatus::Failed => snap.strings.update_failed.clone(),
     };
+    // Append the running binary's version so the user can see what
+    // they are on without opening an About dialog. Using middle-dot as
+    // the separator matches the bubble's countdown formatting.
+    let with_version = format!("{base} \u{00b7} v{}", env!("CARGO_PKG_VERSION"));
     match snap.install_channel {
-        InstallChannel::Winget => format!("{base} ({})", snap.strings.update_via_winget),
-        InstallChannel::Portable => base,
+        InstallChannel::Winget => format!("{with_version} ({})", snap.strings.update_via_winget),
+        InstallChannel::Portable => with_version,
     }
 }