diff --git a/openspec/changes/uv-workspace-packaging/tasks.md b/openspec/changes/uv-workspace-packaging/tasks.md
index d8b2b05..3a56a5c 100644
--- a/openspec/changes/uv-workspace-packaging/tasks.md
+++ b/openspec/changes/uv-workspace-packaging/tasks.md
@@ -25,7 +25,8 @@
 
 - [x] 4.1 Build wheels for every workspace member and inspect them to confirm the expected packages are included once.
   - Runtime wheel contained 86 entries with no `cloud/` package; cloud wheel contained 15 entries with one copy of each expected `cloud`/`cloud.sdk` module and no Runtime-owned package.
-- [ ] 4.2 Install the built wheels into an isolated environment and smoke-test imports for existing Runtime and `cloud.*` modules.
+- [x] 4.2 Install the built wheels into an isolated environment and smoke-test imports for existing Runtime and `cloud.*` modules.
+  - Both wheels installed together in a fresh Python 3.14 environment; isolated imports resolved from that environment's `site-packages`.
 - [ ] 4.3 Run the complete non-integration Python test suite from the workspace root and fix packaging-only regressions without changing behavior.
 - [ ] 4.4 Verify the local REST and MCP factories still import and the console build remains independent of uv synchronization.