[Bug]: Two concurrent runs of one saved Claude workflow show identical Lineage rows #18261

Before submitting

• I searched existing issues and did not find a duplicate.
• I included enough detail to reproduce or investigate the problem.

Area

apps/web

Steps to reproduce

1. Save a Claude workflow (here ~/.claude/workflows/pr-preflight-review.js) and, in one thread, start it twice in parallel with different args: one run reviews a whole branch, the other a fix-round delta on another branch.
2. Open the thread's Lineage list and hover each row.

Expected behavior

Each row says what that run is working on, so the two can be told apart, for example the first line of args.target (or the call's description) under the workflow name.

Actual behavior

Both rows read pr-preflight-review. The hover card shows the model as "Not reported" and the activity line names only the current member (Gemini: gemini-tests-and-text). Which row reviews which branch can only be found by opening each member's chat.

Impact

Cosmetic issue

Version or commit

t3 v0.0.45

Environment

macOS, T3 Code desktop, Claude provider

Screenshots, recordings, or supporting files

Workaround

None in the UI; the run's args are visible only in the parent thread's Workflow tool call. #12598 (workflow phases and members in Lineage, closing #15448) is on main but not in this build; from its diff the row title stays the workflow name, so this looks separate.