Show update notification on lattice --version

lattice --version was handled by clap directly, bypassing the passive
update check. Now intercepted before clap parses so
maybe_notify_update() runs after printing the version.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: gmoon

src/main.rs

@@ -1913,13 +1913,19 @@ fn print_grouped_help() {
 }
 
 fn main() {
-    // Intercept top-level --help/-h before clap parses, so subcommand --help
-    // still uses clap's built-in per-command help.
+    // Intercept top-level --help/-h and --version/-V before clap parses,
+    // so subcommand --help still uses clap's built-in per-command help,
+    // and --version can show the passive update notification.
     let args: Vec<String> = std::env::args().collect();
     if args.len() == 2 && (args[1] == "--help" || args[1] == "-h") {
         print_grouped_help();
         return;
     }
+    if args.len() == 2 && (args[1] == "--version" || args[1] == "-V") {
+        println!("lattice {}", env!("CARGO_PKG_VERSION"));
+        lattice::update::maybe_notify_update(None);
+        return;
+    }
 
     let cli = Cli::parse();