chore: replace desktop publishing with changelog releases

[lodystage]

Problem / pressure

Tag pushes currently build and publish desktop installers and updater feeds. Source releases should instead synchronize app versions and publish a generated changelog without binary assets.

Summary

Replace the Electron packaging workflow with a stable-tag workflow that opens a draft PR updating every apps/*/package.json version on the default branch, then creates a GitHub Release with generated notes and no uploaded assets. Existing releases are preserved on reruns. Update the release documentation, draft Spec, and owning Agent Note.

Visual explanation

flowchart LR
  A[Push vX.Y.Z] --> B[Validate stable version]
  B --> C[Sync apps on default branch]
  C --> D[Create draft version PR if changed]
  D --> E[Create changelog-only Release]

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Before / after

Before	After
Three-platform packaging and signing	No packaging or signing
Installers and auto-update assets uploaded	Generated release notes only
Packaged version injected from tag	App manifest synchronization proposed in a draft PR

The tag stays on its original commit; merging the version PR updates the default branch, not the tagged snapshot. Actions must be allowed to create PRs, bot PRs may need maintainer action to start CI, and superseded version PRs should be closed before merging older versions.

Test plan

• Passed YAML parsing and execution of workflow validation/synchronization steps against temporary synthetic apps: accepted/rejected tags, all app versions, preserved dependencies, repeated execution.
• Passed targeted Prettier formatting and git diff --check.
• Attempted pnpm check and pnpm format; blocked by absent workspace dependencies (tsgo / prettier) and uninitialized submodules in this nested checkout.
• pnpm run docs check reports pre-existing links into missing submodules; no new documentation errors.
• Live tag publication was not exercised.

Context handoff

Review the separation between immutable tags and default-branch version PRs, permissions needed for bot-created PRs, and preservation of existing releases on reruns. This change intentionally stops publishing new installer/update assets and does not delete historical releases.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Keep changelog releases out of the Latest slot

When a newer stable tag is published after an installer-bearing release, this command creates a normal release that GitHub can automatically mark as Latest; the gh release create --help entry for --latest documents the default as "automatic based on date and version." The packaged macOS client hard-codes /releases/latest/download/appcast.xml in apps/electron/src/main/services/app-updater-sparkle-policy.ts:3-4, but this release uploads no appcast, so installed Macs receive a 404 and can no longer reach even the last preserved binary update. Publish changelog-only releases with --latest=false, or move the updater feed before creating them.

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