feat: support Temporal Server 1.30.x

[TechyMT]

feat: support Temporal Server 1.30.x

Problem

Temporal Server 1.30 slimmed the temporalio/server image: dockerize was removed and config templating moved into the server binary (embedded sprig, opt-in via a leading # enable-template comment, and the config file located via TEMPORAL_SERVER_CONFIG_FILE_PATH). The operator mounts an unrendered config_template.yaml and sets no start command, so on a stock 1.30 image the dockerize-style {{ .Env.X }} placeholders never resolve and every server pod crash-loops. The version webhook also caps supported versions below 1.30.

Changes

• version (pkg/version/version.go, upgrade.go): widen SupportedVersionsRange to < 1.31.0; add 30 -> 1.30.6 to RecommendedVersions; add the V1_30_0 boundary constant; mark 1.30.0 broken (it has no published GitHub release — use 1.30.1+).
• config (internal/resource/config/configmap_builder.go): for clusters >= 1.30, emit sprig placeholders ({{ env "X" }}, {{ default "0.0.0.0" (env "POD_IP") }}) and prepend the # enable-template marker. Pre-1.30 dockerize .Env behavior is unchanged (version-gated).
• deployment (internal/resource/base/deployment_builder.go): for >= 1.30, set TEMPORAL_SERVICES (service selection) and TEMPORAL_SERVER_CONFIG_FILE_PATH on the server container.

Scoped to what 1.30.x needs. This mirrors the config-rendering approach in upstream PR alexandrevilain#987, but deliberately omits its 1.31-only pieces (the PasswordCommand datastore field and the Elasticsearch-tool schema changes), since this fork targets 1.30.6 with Postgres visibility.

Testing

• go build / go vet clean on pkg/version, internal/resource/config, internal/resource/base.
• New unit tests: version range/upgrade-hop cases for 1.30; version-gated template-helper tests (configmap_builder_internal_test.go) asserting dockerize syntax pre-1.30 and sprig syntax >= 1.30.
• Rendering validated out-of-band: the emitted sprig template renders with nil template data (the way the server invokes it) — env vars resolve and POD_IP falls back to 0.0.0.0, no placeholders left.

Note on base branch

Targets main-0.22-atlan-0.1 (the fork's active line — the branch build.yaml publishes the operator image from), consistent with the other operator PRs on this line.

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