Aligns mobile with desktop's neutral palette and six chat colors.
Appearance now offers Light, Dark, and System instead of themes, while
preserving community preferences and the single Home and Chat preview
pair.
Chat colors survive local preference reloads without historical-index
remapping, and the Chat preview shows the draft outgoing bubble color.
Channel and section icons are removed, section chevrons sit beside
names, and section dividers use 7% opacity. DM avatars remain.
Validation: `just mobile-check`, 35 focused tests, and the full mobile
suite passed (3,351 tests; 4 skipped). Updated light/dark previews were
rendered and visually checked. The earlier release was verified on
iPhone; this follow-up has not been reinstalled. The earlier
repository-wide lint passed, but full `just ci` was stopped for low disk
space. Hosted CI is running for the new head.
**Intentional design parity:** Section labels and chevrons retain
desktop’s `--text-unavailable` colors: light `#959595`, dark `#595959`.
Verified against `block/buzz-app` main at
`0201b54c496120a44e020834663dc534cae9a79f`. These colors do not meet
4.5:1 text contrast on the mobile section surfaces; the product decision
for this PR is to preserve desktop parity and leave them unchanged.
Kenneth explicitly accepts this known contrast tradeoff for this
PR/release and requests that reviewers treat it as a scoped product
exception rather than a blocker. This does not claim WCAG compliance or
change the repository-wide accessibility target. Any future contrast
adjustment should be coordinated across desktop and mobile.
### Snapshots
Channel list: physical iPhone. Appearance and chat colors:
Flutter-rendered previews.
| Channels | Light | Dark | Chat colors |
| --- | --- | --- | --- |
|
|
|
|
|
---------
Signed-off-by: kenny lopez <klopez4212@gmail.com>
**Category:** new-feature
**User Impact:** Mobile now keeps each community’s appearance in sync
with desktop, including theme, accent, and system-mode preference.
**Problem:** Appearance choices were device-local, so the same account
could look different between desktop and mobile. Live sync could also
stop after the relay closed a subscription.
**Solution:** Store each community’s encrypted appearance preference on
its relay using the shared desktop wire contract, restore it from a
local identity-scoped cache, and apply replacement events live. Closed
subscriptions now recover with guarded backoff and fetch the latest
preference so no update is lost during the gap.
<details>
<summary>File changes</summary>
**mobile/lib/app.dart**
Connects community appearance state to the authenticated app lifecycle.
**mobile/lib/features/settings/accent_picker_page.dart**
Aligns mobile accent choices and selection behavior with the shared
catalog.
**mobile/lib/features/settings/settings_page/appearance_section.dart**
Clarifies the active appearance and hides accent controls when the Buzz
theme owns its neutral accent.
**mobile/lib/features/settings/theme_picker_page.dart**
Persists catalog theme choices through the community-scoped provider.
**mobile/lib/shared/theme/accent_colors.dart**
Matches desktop’s accent catalog and wire values.
**mobile/lib/shared/theme/buzz_theme.dart**
Keeps Buzz visually neutral without discarding the user’s stored accent
for other themes.
**mobile/lib/shared/theme/community_theme_preference.dart**
Defines and validates the versioned desktop-compatible appearance
payload.
**mobile/lib/shared/theme/community_theme_provider.dart**
Coordinates cache-first appearance loading with account and community
changes.
**mobile/lib/shared/theme/community_theme_sync.dart**
Adds encrypted NIP-78 relay persistence, live replacement handling,
deterministic ordering, safe seeding, and resilient subscription
recovery.
**mobile/lib/shared/theme/theme.dart**
Exports the community appearance modules.
**mobile/test/features/settings/theme_picker_page_test.dart**
Covers the updated settings behavior.
**mobile/test/shared/crypto/nip44_interop_test.dart**
Proves Dart decrypts a desktop-produced nostr-rs NIP-44 v2 preference.
**mobile/test/shared/theme/buzz_theme_test.dart**
Covers Buzz’s neutral rendering and stored-accent restoration.
**mobile/test/shared/theme/community_theme_preference_test.dart**
Covers wire parsing, validation, migration, and future-version handling.
**mobile/test/shared/theme/community_theme_sync_test.dart**
Covers cache/relay lifecycle, replacement ordering, switching races,
absence-only seeding, and closed-subscription recovery.
</details>
## Reproduction steps
1. Sign into desktop and mobile with the same account and join the same
community relay.
2. On desktop, choose a distinctive non-Buzz theme and accent; mobile
should update without a local toggle.
3. Restart mobile and confirm it restores the same appearance.
4. Change the mobile theme and accent and confirm desktop follows.
5. Leave mobile idle or backgrounded through a relay reconnect, then
change desktop again; mobile should resubscribe and catch up
automatically.
6. Switch communities and confirm each community restores only its own
appearance.
---------
Signed-off-by: Taylor Ho <taylorkmho@gmail.com>
Co-authored-by: npub1223z34hd7vtwc6qj4s7flsxkj644nlre2nthu7lrrmkumhu3xddsrx9r6w <52a228d6edf316ec6812ac3c9fc0d696ab59fc7954d77e7be31eedcddf91335b@buzz.block.builderlab.xyz>
