hive-forge: defer repo resolution to the accessor, not construction

hive-forge/src/verbs/comments.rs

@@ -67,7 +67,7 @@ pub struct Args {
 }
 
 pub fn run(client: &Client, args: Args) -> Result<()> {
-    let repo = client.repo();
+    let repo = client.repo()?;
     // Truncation info: what sits outside the window we're about to show.
     // A `--tail` window has nothing after it (it ends at the thread's
     // current end); a `--limit`/default window has nothing before it (it