Use has_repo_update field in check-updates display

The CheckUpdates handler now reads has_repo_update to label each
update with its source: [repo], [upstream], or [repo+upstream].
This was the last remaining warning — build should now be fully clean.

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

src/dpack/src/main.rs

@@ -413,17 +413,26 @@ fn run(cli: Cli) -> Result<()> {
                     results.len().to_string().yellow().bold()
                 );
                 for r in &results {
+                    let tag = if r.has_repo_update && r.has_upstream_update {
+                        "repo+upstream"
+                    } else if r.has_repo_update {
+                        "repo"
+                    } else {
+                        "upstream"
+                    };
+
                     let mut line = format!(
-                        "  {} {} → {}",
+                        "  {} {} → {} [{}]",
                         r.name.bold(),
                         r.installed_version.red(),
-                        r.repo_version.green()
+                        r.repo_version.green(),
+                        tag.cyan()
                     );
                     if let Some(ref uv) = r.upstream_version {
                         if r.has_upstream_update {
                             line.push_str(&format!(
-                                " (upstream: {})",
+                                " (latest: {})",
-                                uv.cyan()
+                                uv.yellow()
                             ));
                         }
                     }