#515 feat(ci): migrate production onto the Silicon-only two-workflow pipeline

[Anonymous]

Originally created by: adityaharishch

Phase 2 of getting both channels under 10 minutes. Phase 1 (#514) warmed the cache and cut staging notarization; this makes main use the same pipeline.

Why production was 54-71 min

main still ran the old monolithic release.yml:

plan -> build (2 macOS slices) -> release (lipo universal + notarize + publish) -> windows-release
                                                                                    ^ SEQUENTIAL

Two architectures, a lipo join, then a Windows job after the entire macOS chain (~38 min of pure serial time). Caching cannot fix that shape.

Changes

• release-prepare runs on main too, picking the committed .releaserc.json (stable) or .releaserc.staging.json (staging) by branch.
• release-build tag filter v*-staging* -> v*. Channel is derived from the tag, so one pipeline serves both and they cannot drift.
• release.yml deleted - leaving it would double-fire on every push to main.
• .releaserc.json github plugin fixed - it listed target/universal-apple-darwin/... assets, but release-prepare runs on ubuntu and builds nothing, so those paths cannot exist and a production release would have failed. Now draftRelease: true, matching staging: prepare creates the draft, build fills and publishes it.

Platform impact - please read

Production keeps notarization (new users browser-download the DMG -> quarantined -> Gatekeeper enforces it), but drops Intel and Windows. v1.74.0 shipped a universal DMG and Meridian-setup.exe; after this, Intel and Windows installs find no newer release on their updater endpoint and stop updating. They are not broken, just frozen.

Merge order

Merge [#514] first (already merged), then this. The single pre-main -> main release merge afterwards does double duty: it puts cache-warm.yml on main so it starts seeding, and switches production to this pipeline. From then on both channels build warm.

[Anonymous]

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[Anonymous]

Ticket changed by: adityaharishch

• status: open --> closed