[evan-cz]

Summary

Adds helm/docs/releases/1.2.12.md documenting the 1.2.12 release. Covers everything in develop since v1.2.11 plus the in-flight PRs targeting this release (#847 webhook-server-optional, #856 KUTTL fixes).

Highlights documented:

• Selectable monitoring discovery (CP-42614, CP-42614: Add monitoring discovery model (enabled + discovery.method) #840) — choose ServiceMonitors or prometheus.io/* annotations; default install now emits nothing monitoring-related (with an upgrade note to restore annotation-based discovery).
• Secrets Store CSI Driver for the API key (CP-40648, CP-40648: Add CSI secret provider support for API key delivery #819).
• Chart-wide env injection via defaults.env, enabling egress-proxy support (CP-41221, CP-41221: add chart-wide env injection via defaults.env #832).
• Optional webhook server (CP-43292, CP-43292: make the webhook server optional #847) — framed as groundwork, gated on the experimental KubeState path, not recommended for general use.
• Reliability: aggregator self-healing (CP-40749, CP-40749: auto-recover aggregator pods from persistent 5xx state #791), backfill streaming store (CP-40824, CP-40824: Replace SQLite store with streaming store in backfill job #803), automemlimit OOM prevention (CP-40824, CP-40824: Add automemlimit to prevent GC-induced OOM kills #802).
• Security: webhook server no longer mounts the API key (CP-28161, CP-28161: remove API key from webhook server #794).
• Build/Infra: KUTTL e2e suites fixed to genuinely execute (CP-43356, CP-43356: convert KUTTL command:+args: steps to valid top-level commands: #856).

Dependabot version bumps were intentionally omitted as not release-note-worthy.

Notes for reviewers

• The compare/v1.2.11...v1.2.12 link and the 2026-06-17 date assume the tag lands today; update the date if the release slips.
• CP-43292: make the webhook server optional #847 and CP-43356: convert KUTTL command:+args: steps to valid top-level commands: #856 are still open at the time of writing — the notes describe their intended final state.

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