add more informative messaging on ScheduleProblem

Author: j-atkins

src/virtualship/cli/_run.py

@@ -98,7 +98,7 @@ def _run(expedition_dir: str | Path, from_data: Path | None = None) -> None:
     )
     if isinstance(schedule_results, ScheduleProblem):
         print(
-            "Update your schedule and continue the expedition by running the tool again."
+            f"SIMULATION PAUSED: update your schedule (`virtualship plan`) and continue the expedition by executing the `virtualship run` command again.\nCheckpoint has been saved to {expedition_dir.joinpath(CHECKPOINT)}."
         )
         _save_checkpoint(
             Checkpoint(

src/virtualship/expedition/simulate_schedule.py

@@ -123,7 +123,8 @@ def simulate(self) -> ScheduleOk | ScheduleProblem:
             if waypoint.time is not None and self._time > waypoint.time:
                 print(
                     f"Waypoint {wp_i + 1} could not be reached in time. Current time: {self._time}. Waypoint time: {waypoint.time}."
-                    "\n\nHave you ensured that your schedule includes sufficient time for taking measurements such as CTD casts (in addition to the time it takes to sail between waypoints)?\n\n"
+                    "\n\nHave you ensured that your schedule includes sufficient time for taking measurements, e.g. CTD casts (in addition to the time it takes to sail between waypoints)?\n"
+                    "**Note**, the `virtualship plan` tool will not account for measurement times when verifying the schedule, only the time it takes to sail between waypoints.\n"
                 )
                 return ScheduleProblem(self._time, wp_i)
             else: