The split-mempool-stack guard that skips the legacy monolithic `mempool`
manifest (whose container collides with its split-stack frontend member
`archy-mempool-web`) only ran over DISK manifests. On catalog-driven nodes
(no disk manifests — e.g. the Phase-3/registry-manifest path), the legacy
`mempool` manifest arrives via the registry-catalog overlay AFTER that
guard, so both `mempool` and `archy-mempool-web` end up owning container
`mempool` and rewrite+restart each other forever ("port binding drift" /
"network alias drift" loop observed on .228, leaving mempool down).
Enforce the guard once more over the merged (disk + catalog) manifest set:
drop the `mempool` umbrella whenever all three split members are present.
Installing `mempool` assembles the split stack, so `archy-mempool-web`
owns the frontend container either way.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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