Publish harness and TUI open-source

initial sync from the monorepo

crates/codegen/xai-grok-tools-api/build.rs

@@ -0,0 +1,34 @@
+fn main() {
+    xai_proto_build::configure()
+        .type_attribute(
+            ".", // match every message & enum
+            "#[derive(serde::Serialize, serde::Deserialize)]",
+        )
+        // ToolConfigEntry is embedded in external JSON contracts (Computer Hub
+        // `session.bind` metadata and agent-config JSON) where sparse payloads
+        // must deserialize. Defaults are applied per optional field (not
+        // type-level) so the required `id` field still fails deserialization
+        // when missing instead of silently becoming "". See tests/wire_shape.rs.
+        .field_attribute(
+            ".xai.grok.tools.v1.ToolConfigEntry.params_json",
+            "#[serde(default)]",
+        )
+        .field_attribute(
+            ".xai.grok.tools.v1.ToolConfigEntry.name_override",
+            "#[serde(default)]",
+        )
+        .field_attribute(
+            ".xai.grok.tools.v1.ToolConfigEntry.params_name_overrides",
+            "#[serde(default)]",
+        )
+        .field_attribute(
+            ".xai.grok.tools.v1.ToolConfigEntry.behavior_version",
+            "#[serde(default)]",
+        )
+        .field_attribute(
+            ".xai.grok.tools.v1.ToolConfigEntry.description_override",
+            "#[serde(default)]",
+        )
+        .compile_protos(&["proto/grok-tools.proto"], &["proto/"])
+        .unwrap();
+}