Red proof at commit 4b12ca0393 (implementation unchanged from main a46f80ee28)
Command: vp test run src/state/assets.test.ts (packages/client-runtime)
Test: createAssetEnvironmentAtoms > keeps a relative markdown image on the remote host that owns the thread
1 failed, 1 passed.

AssertionError at assets.test.ts:139: expected { Object (success) } to match object { _tag: 'Failure', ... }
Expected: Failure, AssetWorkspaceAssetNotFoundError
Actual: Success, expiresAt:1, relativeUrl:https://local.test/api/assets/local/report.png

The test queries explicit absolute then authored-relative Markdown references to the same resolved file in one atom registry. Absolute fallback succeeds as expected; the relative reference incorrectly reuses that local result.