Polish pass and projector dry run (meeting readiness)

[JoeBurd-code]

Parent

#3 (PRD: Meeting frontend, real-line SVG walkthrough prop)

What to build

Final quality pass before the engineer meeting on Monday 2026-06-16, finished with a human dry run. Sweep the full line for label collisions and unreadable text at presentation zoom levels, verify hover/selection affordances on every machine, check arrow legibility, spacing discipline, and popup behaviour for every machine in the data. Then a dry run with the user at projector-like resolution, walking all three zones as the meeting will, and fixing anything that trips.

Acceptance criteria

• No overlapping labels or clipped text at Fit All or any zone framing
• Every machine: hover affordance, click selection, popup opens with correct spec + questions
• Walkthrough exercise passes: source stub to all three product endpoints can be traced by arrows alone
• npm run lint clean; all Vitest suites green; npm run build succeeds
• Dry run completed with the user at presentation resolution; sign-off given
• Any corrections from the dry run applied and re-verified

Blocked by

• Future-shape machine popup with spec and open questions #7
• Symbol library: final silhouettes for every machine type #8
• Meeting chrome: header, transport stubs, legend, chart dock #9