browser/openspec/changes/fix-custom-background-status/proposal.md

Why

Profile settings correctly render an uploaded custom background, but the page header metric and background preset controls still label the built-in preset as the current background. This makes users think the uploaded background was ignored when the built-in preset is actually only the fallback after upload removal.

What Changes

• Show an uploaded custom background as the active background in profile settings summary metrics.
• Treat the selected built-in background preset as a fallback while a custom background is active.
• Label the fallback preset explicitly and avoid marking it as the pressed/active visible background.
• Keep uploaded background precedence and existing theme visual direction unchanged.

Impact

• Affected root: platform_web/.
• Expected files: platform_web/pages/ProfileSettingsPage.tsx, platform_web/theme/base.css, and focused page rendering tests.
• No platform API, persistence schema, authentication, plugin, run, or server management behavior changes.
• Verification: focused frontend tests, scripts/check-structure.sh, and openspec validate fix-custom-background-status --strict.