perf: optimize persist delta gating and diagnostics

native/stbme-core/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "stbme-core"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+serde-wasm-bindgen = "0.6"
+wasm-bindgen = "0.2"
+
+[package.metadata.wasm-pack.profile.release]
+wasm-opt = false
+
+[profile.release]
+opt-level = "s"
+lto = true
+codegen-units = 1
+panic = "abort"