Open Route 29 and Cherrygrove City

- Enable Route 29, its Route 46 gate, Cherrygrove City and its buildings.
- Run item balls through FindItemInBallScript and fruit trees through
  FruitTreeScript, with a native daily reset of the daily engine flags.
- Port the Pokémon Center nurse (HealParty with the PP Up clamp,
  CheckPokerus, phone-call checks) and record the whiteout spawn on
  entering a Pokémon Center, as EnterMapWarp does.
- Port standard Poké Marts with keyboard, D-pad and pointer menus.
- Add the recoil battle command (Struggle) and VAR_BOXSPACE.
- Save fruit trees, the daily reset day and the last spawn map; older
  version-3 backups migrate by absence.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/ui/styles.css

@@ -484,6 +484,87 @@ dialog h2 {
   background: var(--blue);
   border: 3px double #102d4b;
 }
+.mart {
+  position: absolute;
+  inset: 0;
+  z-index: 3;
+  display: grid;
+  grid-template-rows: auto 1fr;
+  align-content: start;
+  gap: 8px;
+  padding: 10px;
+  color: var(--ink);
+  background: #f8f8f0;
+}
+.mart-money {
+  justify-self: end;
+  margin: 0;
+  padding: 4px 10px;
+  font-weight: 800;
+  font-variant-numeric: tabular-nums;
+  background: var(--cream);
+  border: 3px double var(--ink);
+}
+.mart-box {
+  min-height: 96px;
+  padding: 10px 12px;
+  background: var(--cream);
+  border: 5px double var(--ink);
+}
+.mart-box p {
+  margin: 0 0 6px;
+  white-space: pre-line;
+}
+.mart-menu {
+  display: grid;
+  gap: 6px;
+  max-height: 220px;
+  overflow: auto;
+}
+.mart-menu button {
+  display: flex;
+  justify-content: space-between;
+  gap: 8px;
+  padding: 6px 10px;
+  text-align: left;
+  color: var(--ink);
+  background: var(--cream-dark);
+  border: 3px double var(--ink);
+}
+.mart-menu button:disabled {
+  opacity: 0.5;
+}
+.mart-menu button.battle-selected {
+  outline: 2px solid currentColor;
+  outline-offset: -4px;
+}
+.mart-menu button small {
+  display: block;
+  font-size: 0.75rem;
+}
+.mart-menu .wide {
+  grid-column: 1 / -1;
+}
+.mart-quantity {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 6px;
+}
+.mart-quantity button {
+  min-width: 40px;
+  padding: 6px;
+  color: var(--ink);
+  background: var(--cream-dark);
+  border: 3px double var(--ink);
+}
+.mart-quantity output {
+  flex: 1;
+  min-width: 0;
+  text-align: center;
+  font-weight: 800;
+  font-variant-numeric: tabular-nums;
+}
 .dialogue-choice button {
   min-width: 64px;
 }