Ring with trainers' calls, rematch them and play the radio (Closes #30)

Every registered trainer's callee and caller scripts run, with the
missing specials and commands (RandomPhoneWildMon, RandomUnseenWildMon,
swarms, gettrainerclassname, Kenji's break, the Blue Card and Buena's
password variables). Fight counts are saved, so rematches and gifts work
on every open map, and the daily reset clears the phone's flags.

Random calls follow CheckPhoneCall and the 20/10/5/3-minute call timer;
received calls ring twice with the caller's name, and calls play their
ringing, hang-up and no-signal sounds. Grass and fishing swarms use the
swarm tables.

The radio ports PlayRadioShow and every station frame by frame, with its
music: the Pokégear's radio card tunes by knob, house radios play through
MapRadio, and Buena's show takes the day's password for Blue Card points
that her receptionist exchanges for prizes.

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

docs/NATIVE_PORT.md

@@ -33,7 +33,9 @@ These paths refer to the pinned [PRET source](https://github.com/pret/pokecrysta
 | Specials                         | `data/events/special_pointers.asm`, `engine/rtc/timeset.asm`, `engine/overworld/decorations.asm`                               | Selected by routine address from the ROM table: `SetDayOfWeek`, initial DST flags, `RestartMapMusic`, room decoration toggles, `PokemonCenterPC` and `PlayersHousePC` (Bill's, the player's and Oak's PCs), the Town Map, `HealParty`, `HealMachineAnim` (its sounds and waits; the machine's sprites are not drawn), `CheckPokerus` and the `StubbedTrainerRankings_Healings` stub.                                                                              |
 | `game/scripts/pc.ts`             | `engine/events/pokecenter_pc.asm`, `engine/pokemon/bills_pc_top.asm`, `engine/pokemon/bills_pc.asm`, `engine/events/prof_oaks_pc.asm`, `engine/events/std_collision.asm` | The Pokémon Center and house PCs: Bill's PC (deposit, withdraw, release, change and name boxes, MOVE PKMN W/O MAIL, stats), item storage, the MAIL BOX (`MailboxPC`) and Oak's rating. Menu strings and texts come from the ROM; lists are native. Printing is not ported. |
 | `game/scripts/start-menu.ts`     | `engine/menus/start_menu.asm`, `engine/pokemon/mon_menu.asm`, `mon_submenu.asm`, `party_menu.asm`, `switchpartymons.asm`, `engine/items/pack.asm`, `engine/items/item_effects.asm` | The start menu, the party menu with the Pokémon submenu (STATS, SWITCH, MOVE, ITEM) and the pack (USE, GIVE, TOSS) with the field item effects listed below, including Rare Candy, stones and vitamins. Menu strings, prompts and texts come from the ROM; screens are native. Field moves from the menu (checked by the world), Softboiled and Milk Drink, SEL and the Select button (`SelectMenu`), MAIL (`MonMailAction`, `ComposeMailMessage`) and `SwitchItemsInBag`. `party/mail.ts` holds the `mailmsg` struct. |
-| `game/scripts/pokegear.ts`       | `engine/pokegear/pokegear.asm`, `engine/phone/phone.asm`, `engine/phone/scripts/mom.asm`, `elm.asm`, `engine/rtc/print_hours_mins.asm` | `PokeGear` with each card's joypad handling: the clock (`Pokegear_UpdateClock`, `PrintHoursMins`), the map card's landmark cursor (`TownMap_InitCursorAndPlayerIconPositions`, `TownMap_GetKantoLandmarkLimits`), the phone list (`PokegearPhone_UpdateDisplayList`, `GetCallerClassAndName`, `PokegearPhoneContactSubmenu`, `CheckCanDeletePhoneNumber`) and calls (`MakePhoneCallFromPokegear`, `CheckPhoneContactTimeOfDay`, `GetMapPhoneService`, `HangUp`). Callee scripts run in the event interpreter on the start menu's draft. Screens are native; the radio's stations are not ported. |
+| `game/scripts/pokegear.ts`       | `engine/pokegear/pokegear.asm`, `engine/phone/phone.asm`, `engine/phone/scripts/mom.asm`, `elm.asm`, `engine/rtc/print_hours_mins.asm` | `PokeGear` with each card's joypad handling: the clock (`Pokegear_UpdateClock`, `PrintHoursMins`), the map card's landmark cursor (`TownMap_InitCursorAndPlayerIconPositions`, `TownMap_GetKantoLandmarkLimits`), the phone list (`PokegearPhone_UpdateDisplayList`, `GetCallerClassAndName`, `PokegearPhoneContactSubmenu`, `CheckCanDeletePhoneNumber`) and calls (`MakePhoneCallFromPokegear`, `CheckPhoneContactTimeOfDay`, `GetMapPhoneService`, `HangUp`). Callee scripts run in the event interpreter on the start menu's draft. The radio card (`PokegearRadio_Joypad`, `AnimateTuningKnob`, `UpdateRadioStation`, `RadioChannels`, `ExitPokegearRadio_HandleMusic`) runs every frame. Screens are native. |
+| `game/scripts/radio.ts`          | `engine/pokegear/radio.asm`, `engine/pokegear/pokegear.asm` (`LoadStation_*`, `PlayRadio`, `PlayRadioStationPointers`), `data/radio/`, `engine/events/specials.asm` (`MapRadio`) | `PlayRadioShow` with every station and segment; ROM texts and tables by label (`RADIO` in the profile, verified). Unit tests check each station's lines, music and Buena's password; the browser test tunes the card. |
+| Phone calls and swarms           | `engine/phone/phone.asm` (`CheckPhoneCall`, `GetAvailableCallers`, `ChooseRandomCaller`, `RingTwice_StartCall`, `HangUp`), `engine/overworld/time.asm` (`CheckReceiveCallTimer`, `CheckDailyResetTimer`), `engine/overworld/wildmons.asm` (`RandomPhoneWildMon`, `RandomUnseenWildMon`, `_SwarmWildmonCheck`), `engine/events/fish.asm`, `engine/events/buena.asm`, `buena_menu.asm` | Random calls, ringing, the daily reset of the phone flags and Kenji's break, swarms, and Buena's specials. A local sweep runs every caller and callee script without a refusal; `tests/phone.test.ts` drives every open map's phone trainer through rematches. |
 | `game/scripts/trainer-card.ts`   | `engine/menus/trainer_card.asm`, `engine/gfx/player_gfx.asm` (`GetCardPic`), `engine/gfx/cgb_layouts.asm` (`_CGB_TrainerCard`), `home/game_time.asm` | `TrainerCard`'s two reachable pages with their joypad rules, strings from `.Name_Money`, `.Dex_PlayTime` and `.Badges`, the caught count, and the badges from `TrainerCard_JohtoBadgesOAM` with their eight-frame steps. `rendering/trainer-card.ts` draws the card picture, leader faces and badges from the ROM with the card's palettes and attribute map. `world/game-time.ts` is `GameTimer` (capped at 999:59:59). Text is native; the blinking colon's and badges' phase start at the page load. |
 | `game/scripts/pokedex.ts`, `game/rom/pokedex.ts` | `engine/pokedex/pokedex.asm`, `pokedex_2.asm` (`DisplayDexEntry`, `GetDexEntryPointer`), `pokedex_3.asm` (`LoadQuestionMarkPic`), `data/pokemon/dex_order_new.asm`, `dex_entry_pointers.asm`, `dex_entries/`, `gfx/footprints.asm`, `engine/gfx/cgb_layouts.asm` (`_CGB_Pokedex`) | New mode's main screen and entry screen with their joypad rules: `Pokedex_ListingHandleDPadInput`, `Pokedex_InitCursorPosition`, `Pokedex_NextOrPreviousDexEntry`, `Pokedex_MoveArrowCursor` and `Pokedex_Page`. Strings come from the ROM; screens are native. Tests compare the order, all 251 entries and every footprint with the PRET source. CRY and the entries' cries play; AREA, PRNT, the option and search screens, Old and A to Z modes and Unown mode are not ported. `ui/pokedex.ts` draws the screen and the Pokédex tab. |
 | `game/world/atlas.ts`            | `data/maps/landmarks.asm`, `data/maps/flypoints.asm`, `engine/pokegear/pokegear.asm` (`_FlyMap`, `CheckIfVisitedFlypoint`), `home/map.asm` (`GetWorldMapLocation`) | The Map tab's atlas: each region's landmarks with their Town Map positions and ROM names, the player's landmark, the visited flypoints and the landmarks with ported maps. Kanto follows the Fly map's Indigo Plateau rule. `rendering/town-map.ts` draws it. Tests compare positions and flypoints with the PRET source. |