chore: scrub internal-file ref from generated gRPC client headers (#23)

Both grpc-web/*.ts header blocks referenced
'founder-private/audits/...-grpc-service-proto-draft.md'. The
upstream .proto in sentrix-labs/sentrix already carries the neutral
phrasing 'internal Sentrix Labs gRPC service-proto draft (2026-05-05)';
the regenerated .ts here didn't pick up that change. Updated by hand
to match — next regeneration via protobuf-ts will produce the same
text.

Co-authored-by: satyakwok <satyakwok@users.noreply.github.com>

Author: satyakwok

src/grpc-web/sentrix.client.ts

@@ -14,7 +14,7 @@
 //
 // Status: v0.1 skeleton. Handlers in crates/sentrix-grpc/src/lib.rs return
 // tonic::Status::unimplemented until main.rs integration lands. Reference
-// design doc: founder-private/audits/2026-05-05-grpc-service-proto-draft.md.
+// design: internal Sentrix Labs gRPC service-proto draft (2026-05-05).
 //
 import type { RpcTransport } from "@protobuf-ts/runtime-rpc";
 import type { ServiceInfo } from "@protobuf-ts/runtime-rpc";

src/grpc-web/sentrix.ts

@@ -14,7 +14,7 @@
 //
 // Status: v0.1 skeleton. Handlers in crates/sentrix-grpc/src/lib.rs return
 // tonic::Status::unimplemented until main.rs integration lands. Reference
-// design doc: founder-private/audits/2026-05-05-grpc-service-proto-draft.md.
+// design: internal Sentrix Labs gRPC service-proto draft (2026-05-05).
 //
 import { ServiceType } from "@protobuf-ts/runtime-rpc";
 import type { BinaryWriteOptions } from "@protobuf-ts/runtime";