fix(runtime): separate packaged JSON-RPC resolution

python/sdk-runtime/src/deepseek_harness_runtime/__init__.py

@@ -9,7 +9,7 @@ Two runtime carriers coexist under ``runtime/``, both injected by the repo's
   needs no Node installation.
 - **node (dev-only)**: the full deploy closure under ``runtime/node/``
   (``package.json`` + ``node_modules/``), executed as ``node
-  runtime/node/node_modules/@deepseek-ai/dsh-jsonrpc-demo/lib/bin.js`` on a
+  runtime/node/node_modules/@deepseek-ai/dsh-jsonrpc-demo/lib/packaged-bin.js`` on a
   system Node >= 22.19. It is the current checkout's source build, never
   selected automatically, and excluded from wheel/sdist distributions.
 
@@ -131,7 +131,12 @@ def _current_platform_tag() -> str:
 def _node_launch_args() -> tuple[str, str]:
     node_root = bundled_package_dir() / "runtime" / "node"
     bin_js = (
-        node_root / "node_modules" / "@deepseek-ai" / "dsh-jsonrpc-demo" / "lib" / "bin.js"
+        node_root
+        / "node_modules"
+        / "@deepseek-ai"
+        / "dsh-jsonrpc-demo"
+        / "lib"
+        / "packaged-bin.js"
     )
     if not bin_js.is_file():
         raise FileNotFoundError(