revise bulk-clear to explicit ids per mara's feedback, fix clippy line count

hive-agent-mcp/src/mcp/args.rs

@@ -41,18 +41,15 @@ pub struct AckUntilArgs {
     pub up_to: i64,
 }
 
-/// MCP tool args for `ack_todos_until`.
+/// MCP tool args for `mark_todos_done`.
 #[derive(Debug, serde::Deserialize, schemars::JsonSchema)]
-pub struct AckTodosUntilArgs {
-    /// Highest todo id to bulk-clear: every pending todo (bash-task
-    /// completions, matrix unread, forge activity) with `id <= up_to` is
-    /// acked in one call — the todo-store analogue of `ack_until` for the
-    /// message inbox. `get_loose_ends` suggests a value in its truncation
-    /// summary when there are more todos than it renders individually;
-    /// pass that value (or the highest id you've actually triaged) to
-    /// clear the backlog in one shot instead of cancelling ids one at a
-    /// time.
-    pub up_to: i64,
+pub struct MarkTodosDoneArgs {
+    /// The specific todo ids to clear (from `get_loose_ends`'s `todo #N`
+    /// lines) — every id in the list is acked in one call. Deliberately a
+    /// list, not a range/threshold: only clears exactly what you pass, so
+    /// you don't risk acking a todo you haven't actually looked at. Unknown
+    /// or already-acked ids are silently skipped.
+    pub ids: Vec<i64>,
 }
 
 /// MCP tool args for `remind`. Exactly one of `delay_seconds` or