fix(ci): deploy cymbal resolution image

[hpouillot]

Problem

The cymbal-resolution Rust image is built, but it is not included in the deploy matrix that dispatches chart state updates. As a result, new image digests are not written to charts state and deployments can render without a valid image digest.

Changes

• Add cymbal-resolution to the Rust image deploy matrix.
• Map the release name and digest key to cymbal-resolution so the charts repo receives commit_state_update for the matching state entry.

How did you test this code?

As an agent, I validated that the workflow YAML parses with:

yq e '.' .github/workflows/rust-docker-build.yml

Commit hooks also ran successfully.

👉 Stay up-to-date with PostHog coding conventions for a smoother review.

Automatic notifications

• Publish to changelog?
• Alert Sales and Marketing teams?

Docs update

No docs update needed; this is a CI deploy-matrix fix.

🤖 Agent context

This PR was authored with pi using shell, file-read, and edit tools. The change follows the existing Rust image deployment pattern: the image already exists in .github/rust-images.yml, and this adds the corresponding deploy-matrix entry so charts state updates use the same cymbal-resolution key.

[github-actions]

Hey @hpouillot! 👋

It looks like your git author email on this PR isn't your @posthog.com address (hpouillot@gmail.com). Since you're on the PostHog team, it's worth pointing your local git author email at your @posthog.com address. Why it matters:

• Consistent work identity in git history — internal tooling that attributes commits to team members keys off your @posthog.com address.
• Keeps team contributions easy to tell apart from external community ones when scanning history.

You can fix it for this repo with:

git config user.email "you@posthog.com"

Or set it globally with git config --global user.email "you@posthog.com". No need to redo this PR — just a nudge for next time. 🙂

[greptile-apps]

_{Reviews (1): Last reviewed commit: "fix(ci): deploy cymbal resolution image" | Re-trigger Greptile}

[stamphog]

Gates denied this PR because it modifies a CI/CD workflow file, which is on the infrastructure/CI deny-list and requires human review from @PostHog/team-devex.

[deployment-status-posthog]

Deploy status

Environment	Status	Deployed At	Workflow
dev	✅ Deployed	2026-06-01 12:38 UTC	Run
prod-us	✅ Deployed	2026-06-01 12:52 UTC	Run
prod-eu	✅ Deployed	2026-06-01 12:55 UTC	Run