Ryan Hamamura da2d7d8983 feat: sync all markers across clients in MapLibre example ...

Convert the three interactive markers (yellow click, purple vehicle,
blue draggable pin) from per-client state to cross-client sync:

- Yellow click marker: PubSub broadcast on map click, all clients
  subscribe and update signal-backed marker position
- Purple vehicle marker: single shared goroutine (sync.Once + RWMutex)
  replaces per-client random movement so all clients see identical path
- Blue draggable pin: extra hidden input triggers server action on
  dragend, which publishes new position via PubSub to all clients

2026-02-20 10:13:43 -10:00

5.2 KiB

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