Flipped the docker-dev rig end-to-end to MeshTransport:Mode=ClusterClient
(OTOPCUA_MESH_MODE, no rebuild) and ran the gate. PASSED for the transport:
deploy seals on ClusterClient, a stopped node fails the deploy naming it, the
MaintenanceMode hatch shrinks the DB-sourced contact set live (6->5->6 on both
centrals independently), and the frame-size canary stayed silent.
Four findings, recorded in 2026-07-22-mesh-phase2-live-gate.md:
A. A 10-30s post-restart delivery window exists, but the DPS control fails
identically -- it is a cluster-convergence property, not a Phase 2
regression. Running the control is the only reason this is a note and not
a false attribution.
B. buffer-size=0's stated rationale was OVERSTATED. A node applies a TimedOut
deployment anyway -- live-observed at +44s -- via DriverHostActor.Bootstrap
replaying the orphan Applying row on restart. Zero buffering removes the
silent, timer-driven replay, not the boot-time DB one. Corrected in the
plan decisions table, Configuration.md, and CLAUDE.md; the decision stands,
the justification narrowed.
C. Stopping BOTH centrals strands the non-seed nodes at the Akka membership
layer (frozen mid-Exiting, not Unreachable, so auto-down does not help).
Transport-independent; a Phase 7 downing/rejoin drill item.
D. The AdminUI driver Restart/Reconnect buttons (DriverStatusPanel) are
rendered by no page -- orphaned since v3 Batch 2 retired /clusters/{id}/
drivers. So gate steps 6/7 could not run; the driver-control node-side leg
is proven live only because DispatchDeployment shares its EventStream path.
Step 8's planned log-signal does not exist (HandleApplyAck is silent on
success); proven instead by both centrals independently logging per-instance
ClusterClient creation, which a singleton cannot.
Also adds a repo-root .dockerignore: docker-dev/Dockerfile does COPY . ., which
was pulling .claude/worktrees (19GB of agent checkouts with their own bin/obj)
into the build context and exhausting the Docker VM disk mid-COPY.
Rig restored to Mode=Dps, six members, no leftover maintenance flags.
Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
Joseph Doherty