Initial Agentsd project commit

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

core/proto/build.rs

@@ -0,0 +1,7 @@
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    tonic_build::configure()
+        .build_server(true)
+        .build_client(true)
+        .compile_protos(&["../../proto/agentsd.proto"], &["../../proto/"])?;
+    Ok(())
+}