FEATURE: Visible size of crypto-seed export while editing seed notes

[ChristopherA]

It would be useful if there was a little counter below the notes field that showed dynamically the resulting size of the final crypto-seed (or maybe in dev mode). For instance, there is a limit of 504 bytes for NTAG15 and 888 bytes for NTAG16, and other cheaper ones can be less and more expensive and rare ones can be more. Currently hard to tell if you are backing up.

For instance, my latest version of the 128-byte Seed Public Test Vector (Yimn Blue) 604b93f2 is now 451 bytes so I can test it on NTAG15.

Similarly, we may want to warn when the size of the notes will make QR to transfer it animated, such as "256-byte Seed Public Test Vector () 604b93f2" (below) or too large for even the largest QR.

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Medium-sized crypto seed with notes is 451 bytes:

ur:crypto-seed/oxadgdhkwzdtfthptokigtvwnnjsqzcxknsktdaosecyhnemfwrfaxkseceheyetdpidinjycxguihihiecxgdkpidjziniacxghihjkjycxhfihiajyjljpcxdehkinjtjnjtcxfwjzkpihdtcxendyeeideseoiyeyaaksjkghisinjkcxinjkcxjyisihcxeheyetdpidinjycxdeeheycxktjljpiedtcxjkihihiecxkpjkihiecxhsjkcxhscxjokpidjziniacxjpihiojpihjkjkinjljtcxjyihjkjycxkoihiajyjljpcxiyjljpcxgogmjkdmcxgoglgufefxgogmfeclcxgogufecxfggwgmcxghfegughgaglflcxgwglgshkcltdcpfwah

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Overly large-sized crypto-seed with notes (256-bit Seed Public Test Vector (Khaki) de584efd) is 1361 bytes, and both can't fit in an NFC and animates when transferred using Gordian Seed Tool Version 1.3.3 (45).

ur:crypto-seed/oxadhdcxvlmdhhtndyfljsrtaxcsmdialbgosrpyvegyguspknrylyskckttgllepeoypebwaosezofptsbkwpgwotwlhnaxksdyeyecendpidinjycxguihihiecxgdkpidjziniacxghihjkjycxhfihiajyjljpcxdegrishsjeindtcxieiheceteeihiyieaakkaoeoghisinjkcxinjkcxjyisihcxeyecendpidinjycxdeeyeecxktjljpiedtcxjkihihiecxkpjkihiecxinjtcxjyisihcxcngujnhsjpjyfxkpjkjyjliekkcxieihjnjljkcxjliycxkohsjpinjlkpjkcxjoiskkjkiniahsjzcxjkihihiecxjkjyjljphsioihcxieihkoiniaihjkdwcxkpjkihiecxinjtcxkohsjpinjlkpjkcxjljyisihjpcxjokpidjziniacxieihjnjljtjkjyjphsjyinjljtjkcxjliycxjkihihiecxjkjyjljphsioihcxidihjkjycxjojphsiajyiniaihjkdwcxhsjtiecxinjkcxiakpjpjpihjtjyjzkkcxkpjkihiecxhsjkcxhscxjokpidjziniacxjpihiojpihjkjkinjljtcxjyihjkjycxkoihiajyjljpcxiyjljpcxgogmjkdwcxfljljpieinhsjtcxguihihiecxghjljljzdwcxhsjtiecxjkihihiejyjljljzdpiajzindmbkbkghisinjkcxjkihihiecxhsjtiecxhsjzjzcxjeihkkjkcxioihjtihjphsjyihiecxiyjpjljncxinjycxjkisjlkpjziecxidihcxiajljtjkinieihjpihiecxkpjtjkihiakpjpihcxhsjkcxjyisinjkcxjeihkkcxjnhsjyihjpinhsjzcxinjkcxidihinjtiocxjkishsjpihiecxjokpidjziniahsjzjzkkcxhsjkcxhscxjyihjkjycxkoihiajyjljpdmbkbkfwinjyiajlinjtcxgthsjkjyihjpcxgrihkkcxfginjtioihjpjojpinjtjyftcxendyeeideseoiyeybkfejyisihjpihkpjncxfpiaiajlkpjtjycxcndycxfpieiejpihjkjkcxhpjndleeeedidlendyvolanldldyvolanldldydldyhlftcxdyksiydyhsfpemeyecehfpdydyecfxesehidhseyeyeoideniaeceeieeceeeoeyecendyeyehfgeyehfpenbkcnihroke



[wolfmcnally]

The next release (51) has this:

[wolfmcnally]

Please re-test.

[shannona]

Length, QR size, and warnings dynamically update as you type. Very nice.