station-master-startos/startos/versions/current.ts

import { IMPOSSIBLE, VersionInfo } from '@start9labs/start-sdk'

export const current = VersionInfo.of({
  // `<upstream>:<downstream>` — the upstream half tracks the bundled Station Master tag exactly
  // (`versions.md`'s consistency checklist), so bumping the submodule pin and bumping this are one
  // action. The downstream half moves only for packaging-only changes, and RESETS to `:0` when the
  // upstream half moves.
  //
  // FOUR COMPONENTS IS FINE. ExVer's upstream half is an arbitrary-length dotted number, not semver
  // — checked against the SDK's own parser rather than assumed, since every example in `versions.md`
  // has three: `0.7.9.8:0` parses to upstream `[0,7,9,8]`, which sorts above `[0,7,9]`, so a box on
  // 0.7.9:0 sees this as an update rather than refusing it as a downgrade.
  version: '0.8.1.0:0',
  releaseNotes: {
    en_US:
      'Bundles Station Master v0.8.1.0 — a table pass over v0.8.0.17. **Games already running on this ' +
      'server resume normally**, and that was measured rather than assumed: every save on the test ' +
      'server was replayed against this build before release, and the only games that refuse are the ' +
      'same ones that already refused. **Passenger coaches stopped piling up unusable.** When the ' +
      'Freight Agent cleared a red Inbound box, the car went back to the Classification Yard still ' +
      'marked as carrying its load — a load already delivered and already paid for. A coach that came ' +
      'back that way could never unload passengers again, so they gathered in the yards as dead stock; ' +
      'over five measured games there were 18 such coaches against 6 usable ones. The car comes back ' +
      '**empty** now, which is what the rules always meant. **And the option says what it does**: it ' +
      'read "send the loaded coach in the red Inbound box to the Classification Yard", which is true of ' +
      'the counters and nonsense as a sentence. It now says the passengers leave the station and the ' +
      'coach goes back to the yard empty. **The lobby is not a dead end.** Leaving a game in progress ' +
      'returned you to a lobby showing only the games you were already in, with no way to join a ' +
      'different one or start a new one — both doors were on the page the whole time, hidden. **The ' +
      'lobby\'s buttons look like buttons**, carrying the same amber border that has meant "you can do ' +
      'this now" everywhere else in the game. **Taking the last card from a Department refills it** — ' +
      'that is the rule and always has been, but it was written down nowhere, so it surprised a player ' +
      'at the table; it is in the Rules and the Home deck reference now. **Managing a game tells you ' +
      'how old it is**: the dropdown listed the code and the position and nothing about when the game ' +
      'was last touched, so four games looked alike. **Smaller:** in the history an Enhancement now ' +
      'names the Mainline card it went on — the slot and the card type both, since a Division can be ' +
      'dealt two of the same card — and calls the card by its printed name.',
    es_ES:
      'Incluye Station Master v0.8.1.0 — una revisión tras una partida de prueba de v0.8.0.17. **Las ' +
      'partidas ya en curso en este servidor se reanudan con normalidad**, y eso se midió en vez de ' +
      'suponerse: todas las partidas guardadas del servidor de pruebas se reprodujeron contra esta ' +
      'versión antes de publicarla, y las únicas que fallan son las que ya fallaban. **Los coches de ' +
      'viajeros dejaron de acumularse inservibles.** Cuando el Agente de Carga vaciaba una caja roja de ' +
      'entrada, el vagón volvía al Patio de Clasificación marcado aún como cargado — con una carga ya ' +
      'entregada y ya pagada. Un coche que volvía así nunca podía volver a descargar viajeros, así que ' +
      'se acumulaban como material muerto: en cinco partidas medidas, 18 de ellos frente a 6 ' +
      'utilizables. Ahora el vagón vuelve **vacío**, que es lo que las reglas siempre quisieron decir. ' +
      '**Y la opción dice lo que hace**: antes decía "enviar el coche cargado de la caja roja al Patio ' +
      'de Clasificación", cierto para las fichas y absurdo como frase. Ahora dice que los viajeros ' +
      'salen de la estación y el coche vuelve vacío al patio. **El vestíbulo ya no es un callejón sin ' +
      'salida.** Salir de una partida en curso te devolvía a un vestíbulo que solo mostraba las ' +
      'partidas en las que ya estabas, sin forma de unirte a otra ni crear una nueva; ambas puertas ' +
      'estaban allí todo el tiempo, ocultas. **Los botones del vestíbulo parecen botones**, con el ' +
      'mismo borde ámbar que significa "puedes hacer esto ahora" en el resto del juego. **Tomar la ' +
      'última carta de un Departamento lo rellena** — es la regla y siempre lo fue, pero no estaba ' +
      'escrita en ninguna parte y sorprendió a un jugador; ya está en las Reglas y en la referencia del ' +
      'mazo. **Gestionar una partida dice cuánto hace que se jugó**: la lista mostraba el código y la ' +
      'posición pero nada sobre la última jugada, así que cuatro partidas parecían iguales. **Menor:** ' +
      'en el historial, una Mejora nombra la carta de Línea Principal sobre la que se jugó — la ' +
      'posición y el tipo, porque pueden repartirse dos iguales — y la llama por su nombre impreso.',
    de_DE:
      'Enthält Station Master v0.8.1.0 — ein Durchgang nach einem Testspiel von v0.8.0.17. **Bereits ' +
      'laufende Partien auf diesem Server werden normal fortgesetzt**, und das wurde gemessen statt ' +
      'angenommen: jeder Spielstand des Testservers wurde vor der Freigabe gegen diesen Build ' +
      'abgespielt, und nur die Partien verweigern, die schon vorher verweigerten. **Personenwagen ' +
      'häufen sich nicht mehr unbrauchbar an.** Wenn der Frachtagent eine rote Eingangsbox leerte, ' +
      'kehrte der Wagen in den Rangierbahnhof zurück, immer noch als beladen markiert — mit einer ' +
      'Ladung, die längst geliefert und längst bezahlt war. Ein so zurückgekehrter Wagen konnte nie ' +
      'wieder Fahrgäste ausladen, also sammelten sie sich als totes Material: in fünf gemessenen ' +
      'Partien 18 davon gegen 6 brauchbare. Jetzt kommt der Wagen **leer** zurück, wie es die Regeln ' +
      'immer meinten. **Und die Option sagt, was sie tut**: sie lautete "den beladenen Wagen aus der ' +
      'roten Box in den Rangierbahnhof schicken" — für die Marker zutreffend und als Satz unsinnig. ' +
      'Jetzt heißt es, die Fahrgäste verlassen den Bahnhof und der Wagen kehrt leer zurück. **Die Lobby ' +
      'ist keine Sackgasse mehr.** Wer eine laufende Partie verließ, landete in einer Lobby, die nur ' +
      'die eigenen Partien zeigte, ohne Weg zu einer anderen oder zu einer neuen — beide Türen waren ' +
      'die ganze Zeit da, nur verborgen. **Die Knöpfe der Lobby sehen aus wie Knöpfe**, mit demselben ' +
      'bernsteinfarbenen Rand, der im übrigen Spiel "das kannst du jetzt tun" bedeutet. **Die letzte ' +
      'Karte aus einer Abteilung zu nehmen füllt sie wieder auf** — das ist die Regel und war es immer, ' +
      'stand aber nirgends geschrieben und überraschte einen Spieler; jetzt steht sie in den Regeln und ' +
      'in der Deck-Referenz. **Die Partieverwaltung sagt, wie alt eine Partie ist**: die Liste nannte ' +
      'Code und Position, aber nichts über den letzten Zug, sodass vier Partien gleich aussahen. ' +
      '**Kleineres:** im Verlauf nennt eine Verbesserung die Streckenkarte, auf die sie kam — Platz und ' +
      'Kartentyp, denn es können zwei gleiche ausliegen — und beim gedruckten Namen.',
    pl_PL:
      'Zawiera Station Master v0.8.1.0 — przegląd po rozgrywce testowej v0.8.0.17. **Partie już ' +
      'trwające na tym serwerze wznawiają się normalnie**, i zostało to zmierzone, a nie założone: ' +
      'każdy zapis z serwera testowego odtworzono na tej wersji przed wydaniem, a odmawiają tylko te ' +
      'partie, które odmawiały już wcześniej. **Wagony pasażerskie przestały gromadzić się ' +
      'bezużytecznie.** Gdy Agent Towarowy opróżniał czerwoną skrzynkę przyjęć, wagon wracał na stację ' +
      'rozrządową wciąż oznaczony jako załadowany — ładunkiem już dostarczonym i już opłaconym. Tak ' +
      'powracający wagon nigdy więcej nie mógł wyładować pasażerów, więc gromadziły się jako martwy ' +
      'tabor: w pięciu zmierzonych partiach 18 takich wobec 6 użytecznych. Teraz wagon wraca **pusty**, ' +
      'tak jak zasady zawsze zakładały. **A opcja mówi, co robi**: brzmiała "wyślij załadowany wagon z ' +
      'czerwonej skrzynki na stację rozrządową" — prawdziwe dla znaczników i bez sensu jako zdanie. ' +
      'Teraz mówi, że pasażerowie opuszczają stację, a wagon wraca pusty. **Poczekalnia nie jest już ' +
      'ślepym zaułkiem.** Wyjście z trwającej partii przenosiło do poczekalni pokazującej tylko twoje ' +
      'partie, bez możliwości dołączenia do innej ani stworzenia nowej — obie bramy były tam cały czas, ' +
      'ukryte. **Przyciski poczekalni wyglądają jak przyciski**, z tą samą bursztynową obwódką, która w ' +
      'grze oznacza "to możesz teraz zrobić". **Wzięcie ostatniej karty z Departamentu uzupełnia go** — ' +
      'to zasada i zawsze nią była, ale nigdzie jej nie zapisano i zaskoczyła gracza; teraz jest w ' +
      'Zasadach i w referencji talii. **Zarządzanie partią mówi, ile ma lat**: lista podawała kod i ' +
      'pozycję, lecz nic o ostatnim ruchu, więc cztery partie wyglądały tak samo. **Drobne:** w ' +
      'historii Ulepszenie nazywa kartę Magistrali, na którą trafiło — miejsce i typ, bo mogą trafić ' +
      'się dwie takie same — i po nazwie z karty.',
    fr_FR:
      'Contient Station Master v0.8.1.0 — une passe après une partie de test de v0.8.0.17. **Les ' +
      'parties déjà en cours sur ce serveur reprennent normalement**, et cela a été mesuré plutôt que ' +
      'supposé : chaque sauvegarde du serveur de test a été rejouée contre cette version avant ' +
      'publication, et seules refusent les parties qui refusaient déjà. **Les voitures de voyageurs ne ' +
      's\'accumulent plus, inutilisables.** Quand l\'Agent de Fret vidait une case rouge d\'arrivée, le ' +
      'wagon repartait vers la gare de triage encore marqué comme chargé — d\'un chargement déjà livré ' +
      'et déjà payé. Une voiture revenue ainsi ne pouvait plus jamais débarquer de voyageurs, elles ' +
      's\'entassaient donc en matériel mort : sur cinq parties mesurées, 18 contre 6 utilisables. Le ' +
      'wagon revient **vide** désormais, ce que les règles ont toujours voulu dire. **Et l\'option dit ' +
      'ce qu\'elle fait** : elle indiquait "envoyer la voiture chargée de la case rouge vers la gare de ' +
      'triage", vrai pour les jetons et absurde comme phrase. Elle dit maintenant que les voyageurs ' +
      'quittent la gare et que la voiture repart à vide. **Le salon n\'est plus une impasse.** Quitter ' +
      'une partie en cours ramenait à un salon n\'affichant que vos propres parties, sans moyen d\'en ' +
      'rejoindre une autre ni d\'en créer une — les deux portes étaient là depuis le début, masquées. ' +
      '**Les boutons du salon ressemblent à des boutons**, avec la même bordure ambre qui signifie « ' +
      'vous pouvez faire ceci » partout ailleurs. **Prendre la dernière carte d\'un Département le ' +
      'réapprovisionne** — c\'est la règle et l\'a toujours été, mais elle n\'était écrite nulle part et a ' +
      'surpris un joueur ; elle figure désormais dans les Règles et la référence du deck. **La gestion ' +
      'd\'une partie dit son âge** : la liste donnait le code et la position, rien sur le dernier coup, ' +
      'si bien que quatre parties se ressemblaient. **Mineur :** dans l\'historique, une Amélioration ' +
      'nomme la carte de Grande Ligne où elle a été posée — l\'emplacement et le type, car deux ' +
      'identiques peuvent sortir — et par son nom imprimé.',
  },
  migrations: {
    /**
     * NOTHING TO CARRY, AND CHECKED THE SAME NARROW WAY v0.7.9.8's ENTRY WAS.
     *
     * The rule this package lives by is in the game's README: a save is a seed plus the moves
     * played, replayed through the CURRENT rules, so the only thing that strands an older save is a
     * change that makes a once-legal move illegal. So the question is never "how big was the
     * release" — v0.8.0 is a large one — but "did any predicate change its answer".
     *
     * Measured with `git diff v0.7.9.8..v0.8.0.1 -- src/engine/`. The WHOLE engine diff is eight
     * lines:
     * four `GameEvent` types (`trayMoved`, `carsCoupled`, `carsDropped`, `consistSorted`) gained a
     * `player` field, and the four places that build them pass it. `check()` is untouched, `legal.ts`
     * and `advance.ts` are untouched, and no predicate anywhere was edited. Games in progress resume,
     * and the release notes say so in all five locales rather than leaving it to be discovered.
     *
     * EVENTS ARE NOT PERSISTED, so widening four of them cannot invalidate anything on disk: a
     * `SavedGame` is `{ seed, config, history: Intent[], … }` and the events are derived by replaying
     * it. The narration TEXT of two lines changed with them ("Moved Train 3 …" where it used to read
     * "CREW moved …"), which a resumed game simply regenerates — the log is not stored either.
     *
     * WHAT IS NOT COVERED BY THAT ARGUMENT, and why it still does not need a migration: the wire
     * between this server and a browser gained a lot. `Push` now carries ordered presentation steps
     * and a public-board baseline, and the board deltas changed shape. None of it is on disk, and a
     * browser reloads onto the new page as part of the update, so there is no version skew to
     * migrate — the same reasoning v0.7.9.8 used for its own `Frame` changes.
     *
     * v0.8.0.1 ADDED NOTHING TO THIS ARGUMENT: `git diff v0.8.0..v0.8.0.1 -- src/engine/` is empty.
     * It changed `sim/pacing.ts`, `web/step-queue.ts` and `web/main.ts` — how long a step is shown
     * and when the queue calls itself idle — which is presentation and touches neither the rules nor
     * anything on disk.
     *
     * v0.8.0.2 DOES TOUCH THE ENGINE, and it is worth being exact about why that is still nothing to
     * migrate. `git diff v0.8.0.1..v0.8.0.2 -- src/engine/` is three added lines: `collisionsPrevDay`
     * declared on `GameState`, initialised to 0 in `setup.ts`, and assigned at the Day rollover in
     * `advance.ts`. It is a counter that nothing checks — no predicate reads it, so no once-legal move
     * became illegal.
     *
     * v0.8.0.3 THROUGH v0.8.0.7 ADDED NOTHING: `git diff v0.8.0.2..v0.8.0.7 -- src/engine/` is empty.
     * One moved the Skip button, changed what the waiting row says, and stopped the speed control
     * stretching the clock; one took a hostname out of comments; the last drew the Home Office deck
     * and lit the pile a watched move touched, which is a diff of two frames the client already
     * holds. None of it is a rule, and none of it is on disk.
     *
     * v0.8.0.8 IS DIFFERENT AND IS THE ONE TO READ CAREFULLY: it changes a RULE (Gitea#23). When the
     * Home Office deck is reshuffled, a timetabled train sitting in the SALVAGE YARD is no longer
     * recovered — it was played, its number is on the timetable, and it cannot be run twice. The same
     * card in a DEPARTMENT was discarded rather than played and still comes back, as does any Extra.
     * A duplicate went with it: `trainScheduled` had been pushing a synthetic `train-<n>` beside the
     * real card, so four scheduled trains left eight entries in a pile of four.
     *
     * GAMES IN PROGRESS STILL RESUME, and the reason is the narrow one this package always asks
     * (README § Design notes): a save is a seed plus the moves played, replayed through the CURRENT
     * rules, so what strands one is a change that makes a once-legal move ILLEGAL. Nothing here does.
     * `check()` is untouched; a draw is a draw whatever lies on top of the deck. What differs is the
     * Salvage Yard's depth, which was double-counting, and which cards a reshuffle returns — and a
     * reshuffle is effectively unreachable in ordinary play: eight games driven to 4000 moves across
     * eight seeds produced ZERO. A game that had somehow reshuffled would replay to a different deck
     * order rather than refusing to replay, which is worth knowing and is not the same as breaking.
     *
     * v0.8.0.9 TOUCHES THE ENGINE FOR SPEED, AND PROVED IT CHANGED NOTHING. `git diff v0.8.0.8..v0.8.0.9
     * -- src/engine/` adds a route cache scoped to one unchanged position (`withRouteCache`), splits
     * `applyIntent` into `prepareIntent` + `commitEvents`, trims allocation in `exploreMoves`, adds
     * `legalSwitchingActions`, and exports `badlyMadeUp`, `protoCard` and `extendLimitsIfNeeded` for the
     * bot. No predicate's answer changed: every event and intent of 32 seeded games hashed identical before
     * and after each step, and the game's `test/route-cache.test.ts` pins the split. Everything else is the
     * developer bot, whose past moves are already intents in a save. Games in progress resume.
     *
     * v0.8.0.10 IS THE FIRST BUMP THAT BREAKS RESUMES, AND IT DOES SO DELIBERATELY. It corrects WHEN §8.1
     * asks the Superintendent to rule (Gitea#26): a train on a card BEHIND the one departing is nobody's
     * concern, and was being counted. A save is the seed and the moves replayed through the CURRENT rules,
     * so a game holding a `mainline.clearance` the rules no longer ask for is refused at that move with
     * NO_PENDING_DECISION — `tryResumeSession` reports which move, and `index.ts` logs the refusal and
     * leaves the file alone. Measured before shipping: 40 four-seat co-op games recorded by bots under
     * v0.8.0.9 and replayed under this release — 28 stop, usually 5-40% of the way in. Jesse's call
     * (2026-09-15): no games in progress need keeping, so this ships without a per-game switch for the old
     * rule, and the release notes say so in all five locales. A game worth finishing can be finished by
     * putting v0.8.0.9 back — the save file is untouched.
     *
     * The rest of the release is the screen and the log — who the board says it is waiting on, what the
     * history says and when it says it, a flash on a realigned Mainline card — plus one new read-only
     * route (`GET /api/save?token=…`) that hands a seated player their own save. None of it is on disk.
     *
     * A NEW STATE FIELD CANNOT STRAND A SAVE HERE, which is the property worth naming rather than
     * re-deriving: a `SavedGame` holds `{ seed, config, history }` and NOT a serialised `GameState`.
     * Resuming calls `createGame` — which fills the new field from `setup.ts` — and then replays the
     * intents through the current rules, so the field is populated on the way past. There is no old
     * shape on disk for a new field to be missing from.
     *
     * THE ONE THING THAT WOULD HAVE NEEDED CARE, had it been built the way the plan first described:
     * the display-step collector runs inside `submit()`, and the resume path (`fromMultiplayerSave`)
     * deliberately does not go through `submit()`. So replaying a saved game emits no steps and burns
     * no sequence numbers. A test in the game pins that, because it is a property rather than an
     * accident.
     *
     * v0.8.0.11 RESUMES, AND IT WAS MEASURED THE SAME NARROW WAY — which matters more than usual
     * here, because the release immediately before it is the one that did NOT.
     * `git diff v0.8.0.10..v0.8.0.11 -- src/engine/` is three files and nineteen insertions:
     * `trainArrived` gains an `owner` field (`events.ts`), the one line in `advance.ts` that fills
     * it from `playerAtSeat`, and a Mainline card's printed description losing a sentence about a
     * speed that is not drawn on the card (`content.ts`). `check()` and `legal.ts` are untouched and
     * no predicate was edited, so nothing once legal became illegal. Events are not persisted — a
     * `SavedGame` is `{ seed, config, history }` and the events are derived by replaying it — so
     * widening one of them cannot invalidate anything on disk, exactly as the v0.8.0.1 entry above
     * argues for four of them.
     *
     * THE REST OF THE RELEASE IS THE SCREEN: a Pause control for the catch-up queue, a one-render
     * look at another player's Office Area, the turn chart following the step being replayed rather
     * than the live game, "still needs" on the make-up panel, the amber on an addable yard chip, and
     * save filenames carrying the join code. None of it is a rule and none of it is on disk.
     *
     * v0.8.0.12 TOUCHES THE ENGINE NOT AT ALL, which is the shortest entry this comment has ever
     * had a right to: `git diff v0.8.0.11..v0.8.0.12 -- src/engine/` is EMPTY. The release is the
     * server's HTTP surface, the browser client and the docs — a seat recovery flow (Gitea#33) for
     * a player whose browser has lost the token that is their only identity.
     *
     * WHAT IT ADDS, AND WHY NONE OF IT IS A MIGRATION: two routes (`POST /api/games/<id>/claim`
     * behind the admin secret, `POST /api/claim` for the player following the link), a `?claim=`
     * entry path in the client, and `seatedPlayers` on the administrative game listing. The codes
     * themselves live in memory and are deliberately NOT persisted — minted on demand and spent
     * within minutes, so a restart dropping them is the right failure rather than a loss. Nothing
     * new is written to the volume, no predicate was edited, and `check()` and `legal.ts` are
     * untouched, so no once-legal move became illegal. Games in progress resume, and the release
     * notes say so in all five locales.
     *
     * v0.8.0.13 TOUCHES THE ENGINE AGAIN, AND THE WHOLE DIFF IS TWO LINES.
     * `git diff v0.8.0.12..v0.8.0.13 -- src/engine/` adds a `superintendentChanged` variant to the
     * `GameEvent` union (`events.ts`) and the one `events.push` in `advance.ts` that emits it beside
     * the `actorChanged` that was already there — §5's handover of the Fedora, which the log had been
     * dropping as turn bookkeeping. Nothing was removed and nothing was edited: `check()`, `legal.ts`
     * and every predicate are untouched, so no once-legal move became illegal, and a widened event
     * cannot invalidate anything on disk because events are DERIVED by replaying a `SavedGame` rather
     * than stored in one — the same argument the v0.8.0.1 and v0.8.0.11 entries above make for
     * theirs. Games in progress resume, and the release notes say so in all five locales.
     *
     * THE REST IS THE SCREEN AND THE LOG, none of it on disk: the Division Yard chips now obey the
     * catch-up queue (they did not, and a click during it submitted a real intent against a stale
     * board), the yard counts are read from the shown board rather than the live game, the district
     * picker gained your own seat and is ordered by seat rather than by player index, collisions name
     * the district's owner and the 5 Revenue they lose, a Depot that cannot stock an outbound
     * passenger explains which car it is short of, and the history panel keeps 90 lines. The
     * passenger case is a RULING rather than a fix — §6.3 wants a loaded coach in the Division Yard,
     * and Jesse kept the shortage (Gitea#2's ruling) while ending the silence about it.
     *
     * v0.8.0.14 IS THE SECOND BUMP THAT BREAKS RESUMES, AND LIKE v0.8.0.10 IT DOES SO DELIBERATELY.
     * A Modifier card may no longer be placed outside a player's Limits (§2.1). That REVERSES an
     * earlier ruling of Jesse's — Modifiers were exempt because a Facility standing at the limit has
     * three of its nine spots beyond the sign — and it is exactly the shape of change this package's
     * `UPDATING.md` says to look for: a predicate in `apply.ts` changed its answer, so a move that
     * was legal when it was played is refused on replay.
     *
     * MEASURED, NOT ESTIMATED. The Day 3 playtest save stops at intent 528 of 539 —
     * `card.play c55 → (-2,4)` with the sign at column 3 — eleven moves short of where the table had
     * got to. `tryResumeSession` names the move, `index.ts` logs the refusal, and the file is left
     * untouched, so re-installing v0.8.0.13 finishes any game worth finishing. Jesse's call, knowing
     * it strands the game that was on the box.
     *
     * THE REST OF THE ENGINE DIFF STRANDS NOTHING, and is worth separating from the part that does.
     * `makeUpShort` is a new event reporting that the make-up round could give a train nothing;
     * `switchingEnded` closes a switching turn; `trayMoved` carries the Stage's Move allowance and
     * `consistSorted` carries where the engine ended up; `switch.sortConsist` gained an OPTIONAL
     * `engineAt` (absent means the nose, which is what every sort did before, so an older save
     * replays to the same train). Events are derived by replaying a save rather than stored in one,
     * and an optional intent field defaulting to the old behaviour changes no past move.
     *
     * THE SMALL YARD RULE CHANGED IN THE PERMISSIVE DIRECTION, which cannot strand a save either: a
     * train there may now be sorted with cars ahead of its engine (`implications.md` against the
     * v0.4.5 card text, Jesse's ruling). Nothing once legal became illegal; §8.2's departure check is
     * untouched and still holds a broken-backed train at the Office.
     *
     * v0.8.0.15 AND v0.8.0.16 CHANGE NO RULE AND STRAND NOTHING.
     * `git diff v0.8.0.14..v0.8.0.16 -- src/engine/` is one sentence of card TEXT and one doc
     * comment. The Interchange stopped telling players "Cars may be sorted into any new order here"
     * — a printed capability that has never been implemented, reaching the board through
     * `mainlineDescription`, which `view.ts` renders as a Mainline card's `what`. Nothing reads
     * `sortsCars` to permit a sort; its only live use is marking the card an Extra may be made up
     * on. No predicate was touched, so no once-legal move became illegal.
     *
     * The rest of those two releases is documentation inside the repository — a Quickstart for a new
     * player, and the four hand-written references brought up to the game as it runs. None of it is
     * served by the site or read by the service; it rides along in the image because the Dockerfile
     * copies the game's tree in.
     *
     * SO THE RESUME WARNING IN THESE RELEASE NOTES IS ENTIRELY v0.8.0.14's, and it still applies:
     * a box on 0.8.0.13:0 takes this update in one hop and meets the Modifier rule on the way.
     */
    up: async ({ effects }) => {},
    down: IMPOSSIBLE,
  },
})