fix(packaging): bump agentex-client floor and smoke-test wheel install

Harden the 0.13.0 split (agentex-sdk + agentex-client share the agentex.*
namespace) against the partial-install break:

- Bump the agentex-client floor to >=0.13.0 (first release where it ships
  separately) so an old client can't satisfy the dep. Kept floor-only: a
  ceiling would exclude the co-versioned slim (release-please can't bump it).
- Add scripts/check-wheel-install (wired into the build CI job): builds both
  wheels, installs them together into a fresh venv, and imports agentex.lib.adk
  plus the agentex.types/resources client surface — catching a wheel that ships
  an incomplete agentex.* namespace (the "files didn't land" failure).

Drops the earlier import-time guard: it ran in agentex/lib, so it was bypassed
whenever the client surface was actually missing — `import agentex` fails in the
client's own __init__ (it eagerly imports types/resources) before agentex.lib
runs. The CI smoke catches that case at the layer that can: the build.

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

Author: max-parke-scale

.github/workflows/ci.yml

@@ -61,6 +61,10 @@ jobs:
         # force-include can't build via the sdist-then-wheel default.
         run: uv build --all-packages --wheel
 
+      - name: Smoke-test wheel install
+        # Both wheels must install together into one working agentex.* namespace.
+        run: ./scripts/check-wheel-install
+
       - name: Get GitHub OIDC Token
         if: |-
           github.repository == 'stainless-sdks/agentex-sdk-python' &&

adk/pyproject.toml

@@ -15,7 +15,7 @@ readme = "README.md"
 dependencies = [
     # Co-released in lockstep; floor-only by design — a ceiling would
     # eventually exclude the co-versioned slim (release-please can't bump it).
-    "agentex-client>=0.12.0",
+    "agentex-client>=0.13.0",
     # CLI surface (agentex.lib.cli.*, agentex.lib.sdk.config.*)
     "typer>=0.16,<0.17",
     "questionary>=2.0.1,<3",

scripts/check-wheel-install

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+# Smoke: agentex-client + agentex-sdk must install together into one working
+# agentex.* namespace. Builds the wheels first if dist/ lacks them.
+
+set -euo pipefail
+
+cd "$(dirname "$0")/.."
+
+if ! ls dist/agentex_sdk-*.whl >/dev/null 2>&1 || ! ls dist/agentex_client-*.whl >/dev/null 2>&1; then
+  echo "==> building wheels (uv build --all-packages --wheel)"
+  uv build --all-packages --wheel
+fi
+
+venv="$(mktemp -d)/venv"
+uv venv "$venv" >/dev/null
+echo "==> installing both wheels into a fresh venv"
+uv pip install --python "$venv" dist/agentex_client-*.whl dist/agentex_sdk-*.whl
+
+echo "==> importing the merged namespace from the installed wheels"
+"$venv/bin/python" - <<'PY'
+import agentex.lib.adk  # ADK overlay — ships in agentex-sdk
+from agentex.types import Event  # client surface — ships in agentex-client
+from agentex.resources import states  # client surface that "didn't land" in the incident
+
+print("agentex namespace OK:", Event.__name__, states.__name__)
+PY