fix: avoid leveled compaction crash when recovering from manifest (#63)

* Fix: Avoid leveled copaction crash when recovering from manifest

* Also sort SSTs in manifest recovery

* Add `in_recovery` flag to `apply_compaction_result`

- Don't sort the SSTs inside `apply_compaction_result` if in recovery

mini-lsm-starter/src/bin/compaction-simulator.rs

@@ -561,8 +561,12 @@ fn main() {
                             .join(", ")
                     );
                     max_space = max_space.max(storage.file_list.len());
-                    let (snapshot, del) =
-                        controller.apply_compaction_result(&storage.snapshot, &task, &sst_ids);
+                    let (snapshot, del) = controller.apply_compaction_result(
+                        &storage.snapshot,
+                        &task,
+                        &sst_ids,
+                        false,
+                    );
                     storage.snapshot = snapshot;
                     storage.remove(&del);
                     println!("--- After Compaction ---");