Summary

• Add brand-owned GitHub update feed config for OpenWork and Qwen Code desktop builds.
• Generate electron-builder publish metadata from the active brand.
• Enable packaged stable-channel auto-update checks and downloads through electron-updater.
• Wire the Settings > App update UI to the existing update IPC surface, including progress and restart-to-update states.
• Document the auto-update design and implementation plan.

Validation

• git diff --check
• bun run lint:i18n:parity
• bun run electron:build:main
• bun run electron:build:renderer
• CRAFT_BRAND=openwork bun run electron:builder-config
• CRAFT_BRAND=qwen-code bun run electron:builder-config

Notes

• bun run typecheck:electron still fails on existing test typing issues outside this change (settings-default-thinking, session-delete-navigation, and skills-loading).
• Development builds intentionally skip real update checks; true update installation testing requires packaged old/new releases.