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Vitor PamplonaandClaude Opus 5.5
395af4dc9c
The 33 descriptions (~16k chars, ~19k with paths) overran Codex's skill-list budget (2% of the context window, or 8,000 chars when unknown), and a review found most bodies stale: paths from before the commons/commonsUI moves, the deleted legacy desktop app, a callback signer API that no longer exists, and example APIs that were never in the tree. Kept, rewritten and checked against the code (every path, class and command): account-state (+feeds), amy-expert, android-expert, auth-signers, compose-expert (+API style, Navigation 3 back stacks), desktop-expert (+run/package), event-store-semantics (+NIP-50 search), find-missing- translations, kotlin-coroutines (+structured concurrency, flow modeling), kotlin-multiplatform (+Gradle, composable extraction), ngit-pr, nip85-trusted-assertions, nostr-expert (+NIP lookup, generated NIP catalog), relay-client. Dropped: textbook Compose/Kotlin technique skills, kotlin-expert, kotlin-types-value-class, gradle-expert, quartz-integration (external-facing; see the Quartz docs commit), find-non-lambda-logs (audit finished; the rule is now in AGENTS.md Kotlin Style), and the /nip, /desktop-run, /extract commands. The skill list is now ~4k chars. Also drops .claude/core-skills-plan.md (stale history) and repoints SearchableEvent's KDoc to event-store-semantics. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
42 lines
2.4 KiB
Markdown
42 lines
2.4 KiB
Markdown
# NIP-55 Android external signer
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Another Android app (Amber, …) holds the key; Amethyst asks it through `Intent`s
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(foreground, with UI) or its `ContentProvider` (background, pre-approved). Android only.
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## Layout (`quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nip55AndroidSigner/`)
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- `api/CommandType.kt` — `sign_event`, `nip04_encrypt`/`decrypt`, `nip44_encrypt`/`decrypt`,
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`get_public_key`, `decrypt_zap_event`, `derive_key`, `sign_psbt`.
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- `api/foreground/` — `IntentRequestManager` (id → channel, launches the intent, waits
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`foregroundApprovalTimeout` = 30 s) and `intents/requests|responses|results/` per command.
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- `api/background/queries/` — one `ContentResolver` query per command (`SignQuery`,
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`Nip44EncryptQuery`, `LoginQuery`, …).
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- `api/permission/` — `Permission` + its serializers (the permissions requested at login).
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- `client/` — `NostrSignerExternal(pubKey, packageName, contentResolver)` (the `NostrSigner`),
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`ExternalSignerLogin` (`createIntent(permissions, packageName)`, `parseResult(intent)`),
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`IActivityLauncher` (`registerForegroundLauncher`, `unregisterForegroundLauncher`,
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`newResponse`, `hasForegroundActivity`), `IsExternalSignerInstalled.kt`
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(`isExternalSignerInstalled(context)`, `getExternalSignersInstalled(context)`),
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`handlers/BackgroundRequestHandler` + `ForegroundRequestHandler`.
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- `SignString.kt`, `JsonMapperNip55.kt`.
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## Flow
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1. Login: `ExternalSignerLogin.createIntent(...)` → the signer app returns pubkey + package →
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`parseResult(data)` → `NostrSignerExternal(pubKey, packageName, contentResolver)`.
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2. Each call tries the background query first; if the signer has not pre-approved that
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command, it falls back to a foreground intent through the registered launcher.
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3. No registered Activity → `SignerExceptions.RunningOnBackgroundWithoutAutomaticPermissionException`;
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no answer in 30 s → `TimedOutException`.
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The Android entry point is
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`amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedOff/login/ExternalSignerButton.kt`.
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## Gotchas
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- Without "always allow", every reaction or zap is an Activity round-trip — bad UX; ask for
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the permissions at login.
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- Desktop has no NIP-55; it uses `NostrSignerInternal` or `NostrSignerRemote`.
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- Tests: `quartz/src/androidHostTest/.../nip55AndroidSigner/` (JVM host) and
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`quartz/src/androidDeviceTest/.../nip55AndroidSigner/` (device/emulator only).
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