chore: depend on sentrix-proto crate, drop vendored proto

Cargo.toml

@@ -21,11 +21,16 @@ tokio = { version = "1", features = ["rt-multi-thread", "time"], optional = true
 tower = { version = "0.5", optional = true }
 tower-http = { version = "0.6", features = ["fs"], optional = true }
 
-# gRPC-Web client (browser-side)
+# gRPC-Web client (browser-side). Proto types come from the standalone
+# `sentrix-proto` crate that the chain repo publishes — single source of
+# truth for the schema.
+# `default-features = false` drops the `transport` feature so the WASM
+# build target compiles (transport pulls tokio-net / mio which don't
+# support wasm32). The browser uses `tonic-web-wasm-client`; the SSR
+# binary uses tonic's Channel-equivalent built on top of axum's HTTP.
+sentrix-proto = { version = "0.1", default-features = false }
 tonic = { version = "0.14", default-features = false, features = ["codegen"] }
-tonic-prost = "0.14"
 tonic-web-wasm-client = "0.9"
-prost = "0.14"
 
 # Async glue
 futures = "0.3"
@@ -59,9 +64,8 @@ web-sys = { version = "0.3", features = [
     "Clipboard",
 ] }
 
-[build-dependencies]
-tonic-prost-build = { version = "0.14", default-features = false }
-prost-build = "0.14"
+# Build-deps removed — proto codegen lives in the published
+# `sentrix-proto` crate, no longer regenerated here.
 
 [features]
 hydrate = ["leptos/hydrate"]