fix(cli): pre-check CUA release asset for Intel macOS before install

The upstream cua-driver installer resolves the latest release and attempts
to download an architecture-specific asset. When the release only ships
arm64 builds (as of v0.1.6), the installer fails with a raw 404 on Intel
macOS with no clear path forward.

Add _check_cua_driver_asset_for_arch() that probes the GitHub Releases API
before running the installer. If the latest release has no x86_64/amd64
asset, print a clear warning and link to the upstream issue. On arm64 or
API failure, fail open and let the installer proceed as before.

Fixes #24530

hermes_cli/tools_config.py

@@ -550,6 +550,55 @@ def _pip_install(
     )
 
 
+
+def _check_cua_driver_asset_for_arch() -> bool:
+    """Check whether the latest CUA release ships an asset for this architecture.
+
+    Returns True if the asset likely exists (or if we cannot determine it).
+    Returns False and prints a warning when the asset is confirmed missing,
+    so callers can skip the install attempt and avoid a raw 404.
+    """
+    import platform as _plat
+    import urllib.request
+
+    machine = _plat.machine()  # "x86_64" or "arm64"
+    if machine == "arm64":
+        # arm64 (Apple Silicon) assets are always published.
+        return True
+
+    # x86_64 / Intel — probe the latest release for an architecture-specific
+    # asset before falling through to the upstream installer.
+    api_url = (
+        "https://api.github.com/repos/trycua/cua/releases/latest"
+    )
+    try:
+        req = urllib.request.Request(api_url, headers={"Accept": "application/vnd.github+json"})
+        with urllib.request.urlopen(req, timeout=10) as resp:
+            release = _json.loads(resp.read().decode())
+        tag = release.get("tag_name", "")
+        assets = release.get("assets", [])
+        arch_names = {"x86_64", "amd64"}
+        has_asset = any(
+            any(a in a_info.get("name", "").lower() for a in arch_names)
+            for a_info in assets
+        )
+        if not has_asset:
+            _print_warning(
+                f"    Latest CUA release ({tag}) has no Intel (x86_64) asset."
+            )
+            _print_info(
+                "    CUA Driver currently only ships Apple Silicon builds."
+            )
+            _print_info(
+                "    See: https://github.com/trycua/cua/issues/1493"
+            )
+            return False
+    except Exception:
+        # Network / API failure — proceed and let the installer handle it.
+        pass
+    return True
+
+
 def install_cua_driver(upgrade: bool = False) -> bool:
     """Install or refresh the cua-driver binary used by Computer Use.
 
@@ -587,6 +636,8 @@ def install_cua_driver(upgrade: bool = False) -> bool:
             _print_warning("    curl not found — install manually:")
             _print_info("      https://github.com/trycua/cua/blob/main/libs/cua-driver/README.md")
             return False
+        if not _check_cua_driver_asset_for_arch():
+            return False
         return _run_cua_driver_installer(label="Installing")
 
     # Already installed and caller didn't ask to upgrade → just confirm.
@@ -609,6 +660,9 @@ def install_cua_driver(upgrade: bool = False) -> bool:
         _print_warning("    curl not found — cannot refresh cua-driver.")
         return bool(binary)
 
+    if not _check_cua_driver_asset_for_arch():
+        return bool(binary)
+
     if binary:
         # Show before/after version when we have a baseline. Best-effort.
         try: