Files
mantra-kmp/docs
Kgothatso Ngako 042c5db5f4 docs: record what the npub sign-in plan built, and the twelve places it chose differently
Phase 8 of docs/npub-sign-in.md is the rollout, which is process rather than
code; what is left to write down is what the seven phases before it turned
out to be. The header moves from "Not built" to "Built", with the table the
other phased plans keep: what the plan said against what the implementation
did, twelve rows, each a decision worth reading before touching the code
it describes -- the startup branch one phase early because the sealed type
asked for it, the migration's three outcomes, the DAO guard that was
belt-and-braces on paper and load-bearing for two phases, a null identity
answering "can sign" with true because nobody is not read-only, and a
round trip run against a real database with a contrast case so that
"nothing was signed" is known to be a claim the harness can refute.

One finding that belongs to no phase is recorded with it: a compose test
looking for a floating action button's label has to search the unmerged
tree, or its "does not exist" is vacuously true. And the one rollout fact
that is not process: the library commit is on claude/nostr-credentials at
01962f3, bumped in by Phase 2, and like the nsec plan's before it has to
be pushed and tagged before any of this leaves the machine.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Pulled-From: curated/curated@f866b9d17b
2026-09-13 12:03:15 +02:00
..

mantra docs

Notes on the parts of this app whose behaviour is not recoverable by reading the code alone — where the reasoning lives in a protocol, a failure mode that is silent, or a decision that looked arbitrary and was not.

document covers
shared-key-ceremony.md ChillDKG over NIP-17: the rounds, the approval gates, the chat transcript, participant ordering
shared-key-derivation.md deriving further keys from the group's threshold key with FROST tweaks — why not BIP32, why no chain code, and the one rule that must not be broken
subgroups.md a group making another group — the four ceremonies, what the parent's signature actually covers, and why the child's key is fresh rather than derived
frost-batch-signing.md signing several events in one ceremony — why one nonce can never cover two messages, and the phased schema, wire and UI work that follows from it
marmot-membership.md how members join an MLS group, and the epoch race that makes a missing member look like a successful invite
member-chronicle.md handing a member added after the work was done the group's signed record — why the events are not on the wire at all, and why the room's id is enough to verify them
marmot-direct-messages.md a one-to-one message inside a group as a stock NIP-59 gift wrap — what its MIP-03 carve-out costs, why the sender cannot read their own, and the one query that would broadcast it
mls-skipped-keys.md why a group event that arrives a moment late is dropped for good, which flows trigger it, the quartz fix, and the partial mitigation in this app
long-running-sync.md the chat subscriptions that stay open instead of pulling once per screen — why the request queue could not simply hold one, and how the group filter follows the room list
dead-code.md code in the sync and relay stack that nothing calls, why each piece is still there, and which of it is a bug rather than a leftover
nsec-sign-in.md signing in with an existing nostr key — why an nsec can never have a wallet behind it, the ten call sites that make it small, and the sign-in machine that was already built and unreachable
npub-sign-in.md signing in with only a public key — what a key that cannot sign can still see here, why that is a preview rather than a browser, and the four decisions the word settles
jvm-target.md what desktop support cost, phased — why the native chain was already done, why an empty source set in our phoenix fork was the real blocker, and why DAO tests need none of it
material-design-conformance.md what the M3 foundations actually require, measured against all 43 screens — the colour pairing that renders the app's own proposals invisible, and eight phases that put the decisions back in the theme
curated-to-mantra.md pulling the Curated fork's thirty-nine commits back under Mantra's names — which lines of work to take, the three decisions, and a measured way to replay a twice-rebranded history without touching seven hundred files by hand

Start with the ceremony if you are new to this area; the Marmot notes all assume it. Read the skipped-keys note before debugging any "the other device never got it" report — it is silent, and it looks like every other kind of delivery failure. The sync note stands alone, and the dead-code inventory reads as a follow-up to it. The batch-signing note is a phased plan that has been built: read it after the derivation note, whose one rule is the same one it is built around. The member chronicle note is a phased plan that has not been built, and reads as the membership note's unanswered half: what a member who joins late can be given, and the one thing they cannot. The jvm-target note is unrelated to all of them: it is a build and packaging story. The subgroups note is a phased plan that has been built; it assumes both shared-key notes and reads as the ceremony's second half — what a group does once it has a key, and what it can say about a group that does not yet. The Material Design note is a phased plan that has not been built, and is the only one about what the app looks like rather than what it does; read the jvm-target note first if you want to know why its adaptive-layout phase exists. The curated-to-mantra note is a phased plan that has not been built, though its dry run has: it is about the repository rather than the app, and reads alone, except that its first decision leans on the derivation note's one rule. The nsec sign-in note is a phased plan that has been built; it inherits the key-storage decision from the jvm-target note and drives the navigation state machine NavigationViewModel.processLocalAccount implements, so read it with the code open, and read its table of where the build chose differently first. The npub sign-in note is a phased plan that has been built, and reads as that plan's out-of-scope note answered: it takes the Identity type and the sign-in machine as given and asks what an identity with no secret is for, before it asks how to build one; read its table of where the build chose differently first.