- adds a fablab model (zititest/models/upgrade-test) that stands up a multi-region HA controller cluster, routers, and loop4 sim traffic clients (SDK, ERT, ZET, tunneler) and drives repeatable in-place upgrade/downgrade iterations, re-bootstrapping in place each iteration
- exercises HA cluster disruption and recovery (snapshot restore, node rejoin) between iterations and validates steady-state traffic and expected terminators after each disruption
- honors the raft restartSelf setting on migration-snapshot restore, so a restored controller restarts itself instead of exiting, and promotes RestartController to a package-level function
- re-sends loop4 run-scenario requests to sims that reconnect mid-scenario, tracking each scenario's expected client set explicitly and ignoring results from clients outside it, so post-disruption client reconnection no longer stalls validation
- closes leaked loop4 sim-control connections on error and on supersession
- rotates component logs and pins the log-pipe binary to the local build, and drops router debug logging, to keep long iterating runs disk-bounded
- excludes the doc/unsettled/ scratch area for in-progress design docs from version control
Paul Lorenz
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