feat: cluster config model + Postgres plugin state detection - #1049
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Environment-config model learns the cluster fields templates stamp: clusterRole (root/replica/internal/edge), groupId, and the template-declared ClusterWiring map (which variables carry node identity, coordinator hosts, the edge's data-node list, and consensus quorum). controllers::postgres_plugins derives PITR/HA/PgBouncer enabled-state and topology from the same environment-config blob the dashboard parses -- there is no dedicated "is this enabled" query. Includes the guardrail inputs (official-image / minor-pin / custom-start-command), parent-chain root resolution with a cycle guard, and the Railway-service -> Patroni member-name join via each node's identity variable (the postgres-ha template AUTHORS the root's Patroni name, e.g. postgres-1, so service names are only the fallback). Part 3/8 of the railway postgres pitr/ha/pgbouncer stack.
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Part 3/8 of the railway postgres pitr/ha/pgbouncer stack (split out of #1032 for reviewability — see that PR for the full context, live-prod e2e evidence, and the test-postgres-cli harness). Each PR is based on the previous one and is independently green (cargo test/clippy/fmt).
Environment-config model learns the cluster fields templates stamp:
clusterRole (root/replica/internal/edge), groupId, and the
template-declared ClusterWiring map (which variables carry node identity,
coordinator hosts, the edge's data-node list, and consensus quorum).
controllers::postgres_plugins derives PITR/HA/PgBouncer enabled-state and
topology from the same environment-config blob the dashboard parses --
there is no dedicated "is this enabled" query. Includes the guardrail
inputs (official-image / minor-pin / custom-start-command), parent-chain
root resolution with a cycle guard, and the Railway-service -> Patroni
member-name join via each node's identity variable (the postgres-ha
template AUTHORS the root's Patroni name, e.g. postgres-1, so service
names are only the fallback).
Part 3/8 of the railway postgres pitr/ha/pgbouncer stack.