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fix(amy): hide banned members' messages in concord read

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read folded the community state but never applied its Banlist, so amy showed
messages every other client drops (CORD-04 §4). Leave them out and report how
many in hidden_banned, so interop checks can still see they arrived.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Vitor Pamplona
2026-09-29 13:56:15 -04:00
co-authored by Claude Opus 5.5
parent 86a5da175a
commit 184758015b
2 changed files with 6 additions and 2 deletions
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cli/README.md
+1 -1
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@@ -678,7 +678,7 @@ also carried on-relay as the encrypted, fragmented kind:33302 Community List
| `amy concord import` | Fetch + decrypt this account's Community List — the kind:33302 fragments plus the retired kind:13302 (carries heldRoots, CORD-06). |
| `amy concord channels COMMUNITY` | List a community's channels; `readable` is false for a private channel whose key this account does not hold (CORD-03 §1). |
| `amy concord send COMMUNITY CHANNEL TEXT` | Post a message (CHANNEL = `general`\|name\|id). A private channel posts on its own key's plane; without a held key it fails with `no_channel_key` instead of falling back to the community-wide plane. |
| `amy concord read COMMUNITY CHANNEL [--limit N] [--epoch N] [--root HEX]` | Read a channel's messages (default 50); `--epoch`/`--root` read a prior epoch's plane (public channels; a private channel reads its held key's plane). |
| `amy concord read COMMUNITY CHANNEL [--limit N] [--epoch N] [--root HEX]` | Read a channel's messages (default 50); `--epoch`/`--root` read a prior epoch's plane (public channels; a private channel reads its held key's plane). Banned members' messages are left out and counted in `hidden_banned`. |
| `amy concord invite COMMUNITY [--base URL]` | Mint + publish a shareable invite link (at most 3 bootstrap relays ride in the fragment, CORD-05 §3; the bundle names this account as creator). |
| `amy concord revoke COMMUNITY TOKEN\|URL` | Retire a link you minted: publishes a `vsk=9` tombstone at its coordinate, then records it in your Invite List. |
| `amy concord join URL` | Redeem an invite link, save the community, and publish a Guestbook Join echoing the link's attribution (CORD-05 §1/§6). |
cli/src/main/kotlin/com/vitorpamplona/amethyst/cli/commands/ConcordChannelCommands.kt
+5 -1
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@@ -157,13 +157,17 @@ object ConcordChannelCommands {
// The channel plane is NIP-42-gated to its own derived stream key; register it so the drain authenticates.
ctx.registerConcordStreamKeys(relays, listOf(channel.secretKey))
val wraps = ctx.drain(relays.associateWith { listOf(ConcordActions.planeFilter(channel.publicKeyHex)) }, pendingOnAuthRequired = true).map { it.second }
val msgs = ConcordActions.channelMessages(wraps, channel, channelId, epoch).takeLast(limit)
// A banned member's messages are hidden, as every client shows the channel (CORD-04 §4);
// the count of what was hidden stays in the output so interop checks can see it arrived.
val (banned, visible) = ConcordActions.channelMessages(wraps, channel, channelId, epoch).partition { state.authority.isBanned(it.author) }
val msgs = visible.takeLast(limit)
Output.emit(
mapOf(
"channel" to channelId,
"epoch" to epoch,
"plane" to channel.publicKeyHex,
"count" to msgs.size,
"hidden_banned" to banned.size,
"messages" to msgs.map { mapOf("event_id" to it.id, "author" to it.author, "content" to it.content, "created_at" to it.createdAt) },
),
)