Identify more mobile data and code, including PCC facilities

[Rangi42]

See https://github.com/Sudel-Matze/pokecrystal (mobile restoration and localization, contains code disassembled from the Japanese ROM) and https://github.com/Sudel-Matze/pokemon-news (one of four issues so far).

(Re: Pokémon News, I think we should have a news_ prefix for all the script+text macros, or even a single macro that directly refers to label values (like tradeanim, mobiletradeanim, setup_command, stdscript, predef).

[mid-kid]

For the low-level mobile adapter stuff, there's comprehensive documentation at https://shonumi.github.io/dandocs.html#magb and a decompilation of the GBA library at https://github.com/mid-kid/libma.
There's an emulator for the mobile adapter at https://github.com/REONTeam/libmobile-bgb which you can use right now to connect to whatever HTTP and SMTP/POP servers you may have and intercept the connection/implement dummy responses to document the server communications. https://github.com/REONTeam/reon holds a few proof of concepts for server implementations. This old thread on the glitch city forums has some outdated and incomplete but still useful information on the HTTP requests the game makes for some functions: https://archives.glitchcity.info/forums/board-76/thread-7509/page-0.html (archive.org link for readability)

[mid-kid]

Also speaking of the low level library, the GBA SDK splits it up in two parts: libma and libml. libma handles the communication with the adapters as well as the HTTP, POP3 and SMTP protocols, and was shipped as a precompiled library, while libml handles creating and parsing mail messages, and was shipped as a source code file (which is why there's no need to decompile it). This is the case with the GBC SDK as well, where libma is lib/mobile/main.asm, and mobile/mobile_45.asm is the equivalent of libml. I think the latter should be moved into lib/mobile/.