refactor(server): indexer & worker & sync perf (#15504)

packages/backend/native/Cargo.toml

@@ -34,6 +34,7 @@ little_exif = { workspace = true }
 llm_adapter = { workspace = true, features = ["schema", "ureq-client"] }
 llm_runtime = { workspace = true, features = ["schema", "ureq-client"] }
 matroska = { workspace = true }
+memory-indexer = { workspace = true }
 mp4parse = { workspace = true }
 napi = { workspace = true, features = ["async", "serde-json"] }
 napi-derive = { workspace = true }