Release v0.22.4

What's Changed

• fix(cli): wrap CLI breadth — cline, continue, goose, openhands by @chopratejas in #492
• fix(subscription): wire tokens_saved_rtk data plane by @chopratejas in #493
• fix(observability): RTK metrics + Rust observability (Phase H blocker) by @chopratejas in #494
• ci(release): adopt release-please for gated publishes by @chopratejas in #495
• fix(release): tag format vX.Y.Z (drop release-please component prefix) by @chopratejas in #497

Full Changelog: v0.22.3...v0.22.4