fix(client): harden nested Tool call projection

packages/client/ui-tool/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-tool/README.md
-README.md: bab3f92e4f6780b041cee2e682cb8ece3386ef15
-README.zh.md: 9187510fa354ba072835271d4b1153c8ee1105c0
+README.md: d6bc0f248cffaf4c65ecf6d97c7a4afb17fc8941
+README.zh.md: f4e8044fe6e10e1fbdfb70987efe07c884fa9ac8

packages/client/ui-tool/README.md

@@ -44,5 +44,6 @@ None. The package is client-only presentation.
 
 ## Known Limitations and Deferred Work
 
+- The Host excludes `run_code` from Code Mode program bindings, so production events currently produce one dispatch level; the recursive Runtime/UI contract is ready for future nested producers.
 - Existing first-party Tool views are initially colocated here and can move to their owning business packages independently through the keyed slot.
 - Tool copy temporarily reuses the `ui-conversation` locale namespace.

packages/client/ui-tool/README.zh.md

@@ -44,5 +44,6 @@ owner 载荷为 `ToolCallOwnerProps`：`callId`、`toolName`、冻结的 `block`
 
 ## 已知限制与后续工作
 
+- Host 不把 `run_code` 暴露为 Code Mode 程序 binding，因此生产事件目前只能产生一层分发；递归的运行时/UI 契约已为未来的嵌套生产者做好准备。
 - 现有第一方 Tool 视图初期仍集中在本包，之后可以通过 keyed slot 独立迁回各自业务包。
 - Tool 文案暂时复用 `ui-conversation` locale namespace。

packages/client/ui-tool/tests/chat-code-subcalls.spec.tsx

@@ -56,7 +56,9 @@ const runningCode = (callId: string): RunningToolCall => ({
   subCalls: [],
 })
 
-const subCall = (seq: number, parent: string, n: number, name: string, args: object, resultText: string, isError = false): ToolCallBlock => ({
+const subCall = (
+  seq: number, parent: string, n: number, name: string, args: object, resultText: string, isError = false,
+): ToolCallBlock => ({
   kind: 'tool-result', seq, time: seq * 1_000,
   callId: `${parent}:code:${n}`,
   call: { name, argsRaw: JSON.stringify(args) },