The legacy bootstrap stored the cluster as the caller spelled it — trimmed,
never folded — and the reshape that shipped in 0.78 copied it into
proxy_address, and subdomain.cluster into domain, verbatim. Everything that
reads those columns compares against canonical lowercase: proxies
canonicalise their address at connect, the gateway-pin check a proxy
registration runs matches proxy_address exactly, cluster-scoped synthesis
finds an account's row by proxy_address, and the proxy folds the SNI host
before matching a mapping's domain. A row that kept capitals is invisible
to all of them — its pin protects nothing and its endpoint never routes.
The reshape now writes LOWER() for both columns, and an idempotent
normaliser lowercases rows a released reshape already copied, registered
right after it. The predicate selects only rows that would change, so a
normalised table costs one pass over one row per account; on MySQL the
default collation compares case-insensitively already and it is a no-op.
Reported by cubic on #7402: the exact proxy_address match a proxy
registration relies on misses a migrated pin with capitals.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sa3DsBDP3VciAi4PPG17L6
