Open Kanto: the S.S. Aqua, the Kanto gyms, the Magnet Train, Mt. Silver and Red (Closes #33)

All 146 Kanto maps, Route 22, Route 28 and Silver Cave are open. The
Magnet Train, Snorlax and the Poké Flute channel, the Diploma, the Trainer
House, Bill's grandpa, Oak's Pokédex rating in Pallet and Goldenrod's
postgame move tutor are ported; big objects cover 2x2 tiles. The Magnet
Train and the Diploma are compared with the cartridge frame by frame.

The playthrough continues from the Hall of Fame through the S.S. Aqua,
the eight Kanto badges, Oak opening Mt. Silver and Red's defeat and
credits.

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

README.md

@@ -2,7 +2,7 @@
 
 A native web port of Pokémon Crystal, translated from [PRET's Game Boy disassembly](https://github.com/pret/pokecrystal). The game runs in TypeScript and reads graphics, maps, sprites and dialogue from the user's own ROM. No original game assets are included.
 
-**Current milestone: all of Johto and the Pokémon League, from the opening to the Hall of Fame and the credits.** Play in a minimal Crystal-style interface with Game, Savegames, Map, Pokédex, Link and Friends tabs. The native canvas fills the play area, and the live local map follows your position. The Map tab also shows the Johto map with your location, the towns you can fly to and the areas open so far. Savegames keeps several independent playthroughs: start a new game, continue, rename, duplicate, export or delete any save, and preview a backup before importing it. The Pokédex tab shows the Pokémon you have seen and caught. Link and Friends show their planned scope without placeholder data.
+**Current milestone: the whole story, from the opening through Johto, the Pokémon League and Kanto to the battle against Red on Mt. Silver.** Play in a minimal Crystal-style interface with Game, Savegames, Map, Pokédex, Link and Friends tabs. The native canvas fills the play area, and the live local map follows your position. The Map tab also shows the Johto and Kanto maps with your location, the towns you can fly to and the areas open so far. Savegames keeps several independent playthroughs: start a new game, continue, rename, duplicate, export or delete any save, and preview a backup before importing it. The Pokédex tab shows the Pokémon you have seen and caught. Link and Friends show their planned scope without placeholder data.
 
 Walk around your home, the town and its buildings at the original walking speed. Mom gives you the Pokégear and asks the day of the week. The teacher stops you from leaving town. Your rival shoves you away from the lab window. Professor Elm introduces his errand, and you choose Chikorita, Cyndaquil or Totodile. The Pokémon's picture and stats come from your ROM, and you can nickname it. Elm's aide then gives you a Potion. These scenes run the game's own event scripts and movement data, with native choices and naming.
 
@@ -32,11 +32,13 @@ Routes 45 and 46 lead south from Blackthorn back to Route 29. In Ecruteak, the C
 
 With the eight badges, surf east from New Bark Town along Route 27, climb Tohjo Falls with Waterfall and take Route 26 north to the Victory Road gate, where only a trainer with all eight badges may pass. Your rival waits at the end of Victory Road. At Indigo Plateau, the Elite Four's doors lock behind you: beat Will, Koga, Bruno, Karen and then Lance, and enter the Hall of Fame. Your team is recorded as the original does, with each Pokémon's entrance, your play time and Professor Oak's rating, then the credits roll; you then wake up in New Bark Town. The Hall of Fame's teams can be viewed from any Pokémon Center's PC.
 
+After the League, Professor Elm gives you an S.S. Ticket: the S.S. Aqua sails from Olivine to Vermilion City, once you find a lost girl and send a lazy sailor back to work. All of Kanto is open, with its eight gyms. Saffron's Magnet Train rides to Goldenrod and back once the Power Plant's Machine Part is returned; Lavender's Radio Tower gives you the EXPN card, and its Poké Flute channel wakes the Snorlax blocking Diglett's Cave. Blue waits on Cinnabar and later in Viridian's gym, Bill's grandpa wants to see some Pokémon, Celadon's game designer gives a Diploma for a complete Pokédex, and Goldenrod's move tutor teaches Flamethrower, Thunderbolt or Ice Beam on Wednesdays and Saturdays. With all sixteen badges, Professor Oak opens Mt. Silver: Red waits at the top of Silver Cave, and the credits roll again after you beat him.
+
 On Route 40, the Battle Tower takes a party of three different Pokémon holding different items into a Battle Room of the level you choose, against seven trainers in a row. Win them all for five of a random vitamin. Between battles you can save and quit, and the receptionist picks up where you left off.
 
 The music and sound effects play from your ROM's own sound engine: map music, battles and their cries, fanfares, jingles and fades. Sound starts with your first press (browsers require it) and pauses with the game; Settings turns it down or off. Move animations and their sounds are not ported.
 
-Kanto, Olivine's port and the S.S. Aqua, Mt. Silver, trade evolutions, the Pokédex's area view, search and other list modes are still being ported. Unported neighboring areas appear at the edges but cannot be entered yet.
+Trade evolutions, the Pokédex's area view, search and other list modes are still being ported. Unported neighboring areas appear at the edges but cannot be entered yet.
 
 ## Run