Paul HittandClaude Opus 5
c688ed21b4
Same values, same commit, as the file at the top of both palettes has always
asked for.
ground #241650 purple -> #0B2140 blue, top down
card #302F5C lifts off the ground at 1.29:1
field/bubble #3B3A6E lifts off a card at 1.20:1
ink #EDEFF9 · secondary #A8AEC9 · links #B99BFF
🔴 `onBackground`/`onSurface` are `Ink`, not `Mist`. The dark scheme used to set
them to `Mist`, which was the near-white page ground; `Mist` is the DARK ground
now, so leaving that alone would have been dark text on a dark background. That
is the exact shape of a swap that survives a rename, and it would have looked
like the app failing to draw rather than like a colour being wrong.
🔴 `MessengerTheme` no longer branches. There was a light scheme, a dark scheme,
and a stored preference choosing between them; with one palette the light branch
would draw light-mode Material chrome under dark artwork. `DisplaySettings.appearance`
is left in place so an existing stored value is not a crash — nothing reads it —
and the picker is gone from the Display section, on both platforms.
⚠️ The palette test caught one on the way in: secondary text on the avatar fill
was 4.48:1, two hundredths under. #3E3C7A became #3B3974.
The test now checks every surface text is read on — ground, card, field, avatar
— and that cards and fields visibly lift off what is behind them. A gradient
that passes and a bubble that does not is still an unreadable app.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Flamenet Messenger — Android
The Android app, and the two libraries under it.
engine/ the protocol: X3DH, Double Ratchet, sealed sender, safety numbers,
key transparency. Plain Kotlin/JVM — no Android in it at all.
client/ the relay transport: HTTP, auth, the §8 routes.
app/ the Compose app.
interop/ the cross-engine driver; not shipped.
engine and client are deliberately plain JVM libraries. The protocol has
nothing to do with Android, and keeping it off the platform means their tests
run anywhere a JVM does — no SDK, no emulator, no device, which is also what
lets them gate in CI on Linux:
./gradlew :engine:test :client:test
The app's own unit tests need the Android SDK but still no emulator (Robolectric):
./gradlew :app:testDebugUnitTest
Where it stands
PARITY.md is the definition of done for this app — read that, not this. Every row there names the iOS file it came from so it can be re-checked rather than trusted. Headlines as of 2026-08-28: messaging, groups, attachments, voice notes, stories, calls, sealed sender, key transparency and the encrypted vault are built and tested; a cross-platform round trip against iOS was verified on 2026-08-26.
⚠️ This file said "Nothing here is an app yet" until 2026-08-28, above a tree containing the finished app — the README described the repository as it was when the engine landed and nothing updated it as the app grew around it. If a claim here ever disagrees with PARITY.md or with the tree, believe those, and fix this.
Why the engine came first, and is held to the vectors
An Android client needs the protocol implemented a third time, and the third
implementation is the one that finds the places where the specification says
less than the two existing engines quietly agreed on — but only if it is
written against the spec and the published vectors rather than against a
reading of our own Swift and JavaScript. So the engine is held to
test/vectors/protocol-v1.json in
flamenet-e2e — the same file the
other two engines are checked against, read from that repository rather than
copied here, because a copied vector file drifts and a drifting vector file
stops being a check. PublishedVectorsTest looks for it beside this checkout
and fails loudly if it cannot find it; FLAMENET_VECTORS overrides the search.
Two implementations that agree may both be wrong in the same way, especially when one was written while reading the other. The audit-path ordering in §19 is the worked example: a top-down reading of a bottom-up path produces the correct root for every left-spine index, so it passes any test that only checks index 0. The vector file pins a right-descending index for that reason, and the Kotlin tests assert both that the published path verifies and that the same path reversed does not.
If this engine ever disagrees with the file, the interesting question is which of the three is wrong — not this one by default.
Contributing and security
- CONTRIBUTING.md — building (JDK 21,
JAVA_HOMEis not optional on a Mac), the test gate, and the platform traps that cost an hour each. - PARITY.md — what iOS does, what this does, and what is left. It is the definition of done for this app.
- SECURITY.md — threat model and where to send a vulnerability report. Not an issue tracker matter: security@flamenetmessenger.com.