数据源到 Map workspace

sequenceDiagram
participant M as Map Model
participant T as Tiles
participant G as GPS
participant D as Directory
participant Team
participant Geo as Geo Stores
M->>T: viewport tiles
M->>G: fix
M->>D: peers
M->>Team: positions
M->>Geo: routes/tracks/waypoints
M->>M: preserve type/source/time