content: describe GhostKey's mechanics in the inheritance mission

frontend/src/lib/types.ts

@@ -2044,7 +2044,7 @@ export const MISSIONS: MissionDef[] = [
         learn: {
             heading: 'What happens to your sats when you don\'t come home?',
             body:
-                "Every self-custodial Bitcoiner faces this quietly: what happens if I die? If the seed lives only in your head, the sats die with you. If it lives in one hidden place, only the person who finds that place inherits.\n\nA reasonable plan looks like:\n\n• A 2-of-3 multisig where you hold one key, a trusted family member holds one, and a lawyer or bank vault holds a third. Losing any one key doesn't lose the coins; needing any two to move them prevents any single party going rogue.\n• A short, plain-language letter with your executor: \"there is bitcoin, here is roughly how much, here is the wallet type, here is the person who has the recovery guidance.\" No seed words in the letter itself.\n• A trial run, actually walk one heir through recovering a small amount so the process is real, not theoretical.\n\nThe worst version is the seed on a note in a shoebox. The next worst is nobody knowing the sats even exist. Both are avoidable in an afternoon.\n\n**Tools that do this for you**\n\nBuilding the above by hand is work, so a category of non-custodial inheritance services has grown up to automate it. GhostKey (ghostkeyapp.com) is one. Bitkey, from Block, is another, and Unchained sells a similar service alongside its multisig vaults.\n\nThe shape is roughly the same across all of them: you name a beneficiary while you are alive, your ability to spend is split or encrypted so that nobody, including the company, can move your coins on their own, and a claim by your heir only succeeds after a waiting period during which you can cancel it. That delay is the load-bearing part. It is what stops someone from simply declaring you dead and walking off with the money.\n\nDo not take any of that on trust, including from us. Before you hand a service your inheritance plan, make it answer four questions in writing:\n\n• If this company disappears tomorrow, can my heir still recover the coins? A genuinely non-custodial design says yes.\n• What exactly does my heir receive, and what do they need of their own to use it?\n• How long is the waiting period, how am I told a claim has started, and how do I cancel one?\n• Can I test the whole thing today with a small amount?\n\nA service that cannot answer the first question plainly is a custodian wearing different words.",
+                "Every self-custodial Bitcoiner faces this quietly: what happens if I die? If the seed lives only in your head, the sats die with you. If it lives in one hidden place, only the person who finds that place inherits.\n\nA reasonable plan looks like:\n\n• A 2-of-3 multisig where you hold one key, a trusted family member holds one, and a lawyer or bank vault holds a third. Losing any one key doesn't lose the coins; needing any two to move them prevents any single party going rogue.\n• A short, plain-language letter with your executor: \"there is bitcoin, here is roughly how much, here is the wallet type, here is the person who has the recovery guidance.\" No seed words in the letter itself.\n• A trial run, actually walk one heir through recovering a small amount so the process is real, not theoretical.\n\nThe worst version is the seed on a note in a shoebox. The next worst is nobody knowing the sats even exist. Both are avoidable in an afternoon.\n\n**Tools that do this for you**\n\nBuilding the above by hand is work, so a category of non-custodial inheritance services has grown up to automate it. Bitkey, from Block, is one. Unchained sells a similar service alongside its multisig vaults. GhostKey (ghostkeyapp.com) is a third, and it is open source, so you can read exactly what it does.\n\nGhostKey works like a dead-man switch. You paste your wallet's extended public key, name an heir, and choose a countdown. Your coins move to an address with two spending paths: yours, which works at any time, and your heir's, which Bitcoin itself refuses to allow until a relative timelock has elapsed. Opening the site and tapping \"I'm still here\" resets the clock. Stop tapping for long enough and the countdown runs out, at which point your heir's path becomes spendable and they are emailed a claim link. They paste a receive address and get a transaction to sign with their own wallet, so they need no account and nobody holds their funds.\n\nThe part that matters is what happens if the company dies before you do. Because the rule lives in the Bitcoin script and not on a server, the pre-built transaction can still be broadcast once the timelock expires. Nobody at GhostKey can move the funds at any point, and nobody's permission is needed to claim them.\n\nDo not take any of this on trust, including from us. Before you hand a service your inheritance plan, make it answer four questions in writing:\n\n• If this company disappears tomorrow, can my heir still recover the coins? A genuinely non-custodial design says yes, and can show you why.\n• What exactly does my heir receive, and what do they need of their own to use it?\n• How long is the waiting period, how am I told a claim has started, and how do I cancel one?\n• Can I test the whole thing today with a small amount?\n\nA service that cannot answer the first question plainly is a custodian wearing different words.",
             tip: 'Untested inheritance plans usually don\'t work. Rehearse yours on a small amount before you need it.',
         },
         quiz: {