clippy: zero pedantic warnings across the tree

hive-c0re/src/approvals.rs

@@ -168,8 +168,11 @@ impl Approvals {
 
     /// Mark pending -> approved (or fail if not pending). Returns the (now-updated)
     /// approval so the caller can run the action and pass the agent name.
+    #[allow(clippy::type_complexity)]
     pub fn mark_approved(&self, id: i64) -> Result<Approval> {
         let conn = self.conn.lock().unwrap();
+        // Row shape: (agent, kind, commit_ref, requested_at, status,
+        // fetched_sha, description).
         let current: Option<(
             String,
             String,