Create a single-file benchmark at `/museum/` called `Signal Reliquary`.

Brief:
- Build a virtual museum of signal relics with spatial navigation and the mood of a dim archive crossed with a broadcast observatory.
- Use four curated rooms in sequence: Threshold Atrium, Intercept Gallery, Wave Chamber, and Future Relay.
- Treat the experience as a guided exhibition rather than a card grid.

Core interaction:
- Provide room-to-room navigation with obvious previous/next controls plus a minimap.
- Support keyboard navigation, mouse clicks, and touch swipe gestures.
- Include a curator-tour mode that can advance visitors through the rooms and focus key objects.
- Persist visited rooms and collected room stamps in local storage.

Collection requirements:
- Show at least eight labelled artefacts with short interpretive notes.
- Make every object feel catalogued, with year, provenance, and why it mattered.
- Include a highlight mode for selecting an artefact and surfacing deeper context.

Visual direction:
- Editorial, atmospheric, and high-contrast.
- Use layered gradients, grid overlays, luminous signal lines, and restrained glass panels.
- Keep typography sans-serif and wayfinding legible on desktop and mobile.

Implementation:
- Write one `index.html` with inline HTML, CSS, and JavaScript only.
- No external assets or libraries.