fix: Clippy redundant_pattern_matching lint

Author: bitloi

issue-61-comment.md

@@ -0,0 +1,12 @@
+The snapshot functionality has been implemented. This adds:
+
+- `snapshot()` method to the SDK
+- `agentfs snapshot <ID_OR_PATH> <DEST_PATH>` CLI command
+
+You can snapshot an active session's database by pointing to its delta.db file:
+
+```
+agentfs snapshot ~/.agentfs/run/<session>/delta.db /path/to/snapshot.db
+```
+
+The implementation uses WAL checkpoint + file copy. Note that there's a small race window between checkpoint and copy where concurrent writes from the FUSE process might not be captured. For fully consistent snapshots of an active mount, a future improvement could have the FUSE process handle the snapshot internally.

sdk/rust/src/lib.rs

@@ -635,7 +635,7 @@ impl AgentFS {
         // and truncates the WAL file
         let mut checkpoint_rows = conn.query("PRAGMA wal_checkpoint(TRUNCATE)", ()).await?;
         // Consume the result rows
-        while let Some(_) = checkpoint_rows.next().await? {}
+        while checkpoint_rows.next().await?.is_some() {}
 
         // Get the source database path by querying the database filename
         let mut rows = conn.query("PRAGMA database_list", ()).await?;