fix(roadtrip): the hotel at the edge of a day stands, drives and reads right

A hotel row now takes its position and name from the trip's place instead of the stay
row, which the planner fetches again only when a stay is edited. A moved pin no longer
seats the hotel at its old spot while the server plans from the new one. The drive out
of the morning hotel goes the way the first place is reached from it, the mode Days
draws that leg in, and it is set in the shared rule so the browser and
calculate_roadtrip agree.

On the rail, a hotel row that took in the morning marker starts the line. A day that
only drives from one stay to the next shows no stop count and takes a dropped stop as
its first. The hotel keeps its pin on the desktop map, and the switch explains itself
under its label and to screen readers. On the phone, the note about figures set on the
desktop now sits above the switch it does not cover. The hint and the refusal on the
hotel's drive say what they mean in all 23 languages. The via tools and the wiki say
that a via into a booked night is kept but not used, the wiki states the overlap rule
Days applies, and the arrived-from branch of the via anchor has tests.

wiki/MCP-Addon-Tools.md

@@ -243,7 +243,7 @@ These tools work without an open browser. The external assistant chooses places
 | `search_roadtrip_corridor` | Fuel, charging, rest areas, campsites, food, sights or hotels along a day | `trips:read` |
 | `update_route_via` | Move an existing routing handle and optionally change its outgoing leg | `trips:write` |
 | `list_route_vias` | A day's via points, or the whole trip's together with its followed tracks | `trips:read` |
-| `add_route_via`, `add_route_vias` | Add one via point, or a whole chain on one day | `trips:write` |
+| `add_route_via`, `add_route_vias` | Add one via point, or a whole chain on one day. With `roadtrip_hotel_bookends` on, a via after the last stop of a day that ends at a booked night is kept but not used, because the drive to the hotel keeps its own road | `trips:write` |
 | `reanchor_route_vias` | Re-pin a day's via points after its stops changed | `trips:write` |
 | `remove_route_via` | Remove a via point so the leg drives direct again | `trips:write` |
 | `list_day_boundaries`, `set_day_boundary` | Read or set dragged day endings; null restores the automatic ending | `trips:read` / `trips:write` |

wiki/Road-Trip.md

@@ -296,10 +296,10 @@ With it on:
 - The hotel stands at the edge of the day card as a row of its own, with a bed icon and no number. In the morning it reads *Check-out · Hotel Adler* with *until 10:00* on the day you leave, and *From Hotel Adler* on a day you come back to. In the evening it reads *Back to Hotel Adler*, or *Check-in · Hotel Adler* on the day the stay begins when the hotel's own stop is not on the card before it, for example because you removed it.
 - The drive to and from the hotel counts towards the day's distance, driving time, driving limits and range. The hotel does not count as a stop and does not refill the tank.
 - These rows are not stops you planned, and nothing is stored for them: they cannot be dragged, removed or given a stay. Clicking one opens the night's booking, or the hotel's place when there is no booking to open. On the phone, a night without a booking opens the stay for somebody who may edit days.
-- Only real nights count: a stay that checks in and out on the same day adds no row, and neither does a hotel without coordinates. Where two stays overlap, the one entered first counts.
+- Only real nights count: a stay that checks in and out on the same day adds no row, and neither does a hotel without coordinates. Where two stays overlap, the choice is the one **Days** makes: the day ends at a stay checked in that day, otherwise at the one it started from, and it starts at a stay checked in on an earlier day, the one entered first where there are two. A drive between two different hotels is then a real drive.
 - A side of the day that already starts or ends at the hotel gets no row. Neither does a day that starts where a flight, train or ferry lands or at a hire car's pick-up desk, or ends at a departure terminal or where the hire car goes back.
 - A day with one place becomes a drive from the hotel to it and back. A day between two nights in the same hotel with no place planned has no drive, and a check-out day with no places is the drive from one hotel to the next.
-- The drive from and to the hotel keeps its road. Clicking it on the map places no via point and says *The drive from or to your stay keeps its road.*, and its drive band offers no **Other ways**. A place added from the search along that drive goes to the start or the end of the day.
+- The drive from and to the hotel keeps its road. Clicking it on the map places no via point and says *No via point on the drive to or from your stay. Add a stop there instead.*, and its drive band offers no **Other ways**. A place added from the search along that drive goes to the start or the end of the day.
 - With **Connect the days** on or daily travel times set, a night at one hotel is no drive between the two days. A via point on the drive from one day into the next is kept, but not used while that day ends at a hotel.
 
 Switch it off and every day drives from its first stop to its last, as before. The **Days** view does not change either way.
@@ -409,7 +409,7 @@ What TREK contacts, and from where:
 | *Use a Google Maps directions link.* | The link is not a Google Maps directions link, for example a single place. |
 | *The link must contain between 2 and 30 readable stops.* | Too few or too many stops in the link. Split a longer route into days. |
 | Via handles do not appear or do not move | Zoom in further. Otherwise you are offline, or you may not edit days on this trip. |
-| *The drive from or to your stay keeps its road.* | You clicked the drive to or from a hotel row, which takes no via point. Add a stop there instead, or switch off **Start and end each day at your stay**. |
+| *No via point on the drive to or from your stay. Add a stop there instead.* | You clicked the drive to or from a hotel row, which takes no via point. Add a stop there instead, or switch off **Start and end each day at your stay**. |
 
 ## See also