fold hive-c0re module tree into the daemon binary + drop dead pub items surfaced by bin-only (#2513)

hive-c0re/src/socket_server/config_approvals.rs

@@ -125,7 +125,7 @@ pub(crate) async fn submit_merge_config_pr(
     }
     // Fetch the current PR head sha — becomes the "reviewed" sha.
     // Submitted together with the approval row (atomic single INSERT) so a
-    // crash between submit and set_fetched_sha cannot leave a stranded row.
+    // crash mid-submit cannot leave a stranded sha-less row.
     let sha = crate::forge::pr_head_sha(&repo, pr_number)
         .await
         .map_err(|e| anyhow::anyhow!("fetch PR head sha for {agent} PR #{pr_number}: {e}"))?;