Make compaction transitions recoverable

src/app/projects.rs

@@ -196,7 +196,14 @@ mod tests {
         let directory =
             std::env::temp_dir().join(format!("ds4-server-sweep-{}", std::process::id()));
         std::fs::create_dir_all(&directory).unwrap();
-        for name in ["1.bin", "2.bin", "notes.bin", "7.bin"] {
+        for name in [
+            "1.bin",
+            "2.bin",
+            "notes.bin",
+            "7.bin",
+            "1.compacting",
+            "2.tmp",
+        ] {
             std::fs::write(directory.join(name), b"payload").unwrap();
         }
         let projects = vec![ProjectWithSessions {
@@ -213,6 +220,8 @@ mod tests {
         // Not a session checkpoint, so not ours to delete.
         assert!(directory.join("notes.bin").exists());
         assert!(!directory.join("7.bin").exists());
+        assert!(!directory.join("1.compacting").exists());
+        assert!(!directory.join("2.tmp").exists());
         // Nothing left to sweep on the next pass.
         assert!(!super::super::sweep_orphan_checkpoints(
             &directory, &projects