fix(mothership): Go-parity gaps from the wire audit — sim side

Live CLI rows read "Running CLI command" for their whole run: the
worker's partial frame names them sim_cli (args unknowable mid-stream)
and the browser only filled EMPTY names. upsertToolNode now replaces
exactly that placeholder with the finalized frame's verb — scoped so the
gateway rebind's model-authored branding is never clobbered.

isValidRunPayload accepts run/steering_applied: the worker emits it per
the loss-free-ack contract and the validator's rejection escalated to
FatalSseEventError — the ack would have killed the live turn the moment
steering shipped.

Claude-Session: https://claude.ai/code/session_01CgaxNAaeD3taGdghbXn17w

Author: Sg312

apps/sim/app/workspace/[workspaceId]/home/hooks/stream/turn-model.ts

@@ -363,7 +363,14 @@ function upsertToolNode(
 ): ToolNode {
   const existing = model.nodes.get(id)
   if (existing && existing.kind === 'tool') {
-    if (name && !existing.name) existing.name = name
+    // Fill blanks, and replace exactly the CLI placeholder: the worker's partial frame
+    // names CLI rows `sim_cli` (args unknowable mid-stream) and the finalized frame
+    // carries the real verb (`cli_workflows_list`) — without this every live CLI row
+    // read "Running CLI command" until reload. Scoped to the placeholder so the gateway
+    // rebind's model-authored branding is never clobbered by a later frame.
+    if (name && (!existing.name || (existing.name === 'sim_cli' && name !== 'sim_cli'))) {
+      existing.name = name
+    }
     return existing
   }
   const node: ToolNode = {

apps/sim/lib/mothership/request/session/contract.ts

@@ -289,7 +289,11 @@ function isValidRunPayload(payload: JsonRecord): boolean {
     kind === MothershipStreamV1RunKind.checkpoint_pause ||
     kind === MothershipStreamV1RunKind.resumed ||
     kind === MothershipStreamV1RunKind.compaction_start ||
-    kind === MothershipStreamV1RunKind.compaction_done
+    kind === MothershipStreamV1RunKind.compaction_done ||
+    // The worker's loss-free steering ack. Rejecting an unknown-but-contracted kind
+    // escalated to FatalSseEventError and would have killed the live turn the moment
+    // steering shipped (found by the Go-parity audit before any user hit it).
+    kind === MothershipStreamV1RunKind.steering_applied
   )
 }