Adversarial review raised three findings. Two survived verification.
Rejected: a claimed RangeError when abbreviating a short public key. The
code already guards with a length check before either substring, so the
crash it describes cannot occur.
Rejected as described, fixed as found: contact position (0, 0) was said to
be dropped on import. It is not. The frame builder writes the position block
whenever lastModified is present, which it always is here, so a suppressed
position still writes 0/0 and the bytes are identical either way. The
hasPosition conditional was therefore doing nothing except misleading a
reader, which is exactly what happened. Removed, and the behavior is pinned
with a test.
Accepted: the service added sections to 'applied' after sendFrame returned,
which only means the frame left our side. A lost or refused frame was
indistinguishable from success, so the user could be told an import worked
when nothing changed on the device.
A correct fix needs an awaited per-command acknowledgement in the connector,
keyed on command code so concurrent commands cannot steal each other's OK.
That is real connector work and is filed as #584. What is fixed here is the
overclaim: 'applied' and the two counts are documented as sent rather than
confirmed, and the result string now reads 'Sent N contacts and M channels
to the device'. The code no longer states something it cannot know.
Applies a stock config file to the device with stock's own merge semantics,
quoted from its Import Config screen:
- contacts are upserted on public key, and nothing is ever deleted
- channels are additive only, so a rotated PSK for a channel the user
already has does not apply
- importing an identity overwrites the node outright
We match that behavior but not its silence. Every skipped channel comes back
named, with a reason, so the UI can show it; a channel that quietly did not
import is the silent no-op SAFELANE section 6 forbids.
The channel merge rule is extracted as planChannelImport, a pure function, so
the surprising part is testable without a radio. It treats a channel as
already present when either its PSK or its name matches, which is the
non-destructive reading of a rule stock states without defining. Pinning down
what stock actually does is a T1 question, recorded in the doc comment.
New channels take the lowest free slot, since the file carries no index.
other_settings is reported as not fully writable rather than claimed as
applied: buildSetOtherParamsFrame deliberately pins the auto-add-contacts
byte, so manual_add_contacts cannot be written without changing app-wide
behavior. Advert location policy is applied.
10 tests over the planner and the result type.
Gathers live device state into a StockConfig, section by section, matching
stock's Export Config screen where each section is independently selectable
and the file simply omits what was not ticked.
A requested section that cannot be gathered is reported in the result rather
than dropped, with the reason kept specific: unsupported (firmware built
without identity export) is distinct from noReply and rejected, so the
export screen can say the radio cannot do it instead of offering a pointless
retry.
Two unit traps handled explicitly:
- currentFreqHz is misnamed; the value is kHz, which is also what stock's
frequency field carries, so it passes through unconverted. currentBwHz
really is Hz. The mismatch exists in both our state and the file.
- other_settings.manual_add_contacts must be the raw device byte. The
connector's _manualAddContacts is an inverted derived view of bit 0
(firmware treats a clear bit as auto-add enabled), so exporting it would
have written the wrong value. The raw byte is now retained and exposed,
with the inversion documented at the parse site. No behavior change.
Path mapping keeps our hash count and per-hop width (#309) intact: stock
encodes one hash per comma-separated element, so the width survives as
element length. A flood route, an over-long declared hop count, or a width
stock cannot express all yield no path rather than a guessed one.
13 tests over the pure mapping functions.
The radio is authoritative for the expected-ACK hash it reports, but the
client looked that hash up in a map keyed by a hash it recomputed locally.
When the two disagreed the lookup missed silently (debugPrint only), the
8000ms watchdog from #395 marked the message failed, and the genuine ACK
later matched nothing because every downstream map is populated only on the
match path. Delivery worked the whole time.
Captured on a Wadamesh HV4 TFT in #449: five DMs, all shown as errors, two
with a confirmed ACK whose hash equalled the radio's RESP_CODE_SENT value
exactly. Wadamesh builds the payload differently, so the client cannot
predict its digest, and Offband is expected to work against stock MeshCore,
Wadamesh and other forks.
RESP_CODE_SENT is the reply to our own CMD_SEND_TXT_MSG, so adopt the radio's
value when exactly one send awaits confirmation. Zero or several candidates
keep the previous behaviour rather than guessing. Channel sends draw the same
frame, so adoption is refused while one is outstanding.
The lookup miss is now a warn on debugLogService instead of a bare
debugPrint (SAFELANE section 6).
A send-order correlation queue was developed alongside this and has been
split out: its ordering premise needs a transport send mutex that does not
exist yet, and three review rounds each found a fresh defect in it. This
commit deliberately carries only the adoption fallback, which is what the
owner's hardware test validated.
Refs #449
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
1. An unprefixed reply no longer resolves an arbitrary pending command.
#532 constrained prefixed replies only; the unprefixed fallback still
used firstWhere, which with two or more in flight is map-iteration
order, so a caller could receive another command's output. The
fallback cannot just be deleted: firmware only echoes the prefix when
the command exceeds four characters including it
(simple_repeater/MyMesh.cpp, strlen(command) > 4 && command[2] == '|'),
so a very short command legitimately answers without one. It now
resolves only when exactly one command is pending, and surfaces the
ambiguity otherwise.
2. A late reply no longer overwrites unsaved edits. The settings screen
applied a late `get` payload unconditionally, so a reply arriving after
its timeout could revert a field the user had typed into while waiting.
It now applies only when nothing is dirty, and says which happened.
3. _expiredCommands is pruned on timeout as well as on receive. It was
pruned only in handleResponse, so a run of commands that all time out
with no traffic coming back accumulated records until disposal.
The reviewer described 3 as unbounded growth. It is bounded at 256 by the
prefix token space, and stale records could never be mis-attributed
because handleResponse prunes before matching, so the severity was
overstated. Fixed anyway; it is nearly free.
A fourth finding, that the new l10n strings are untranslated in the other
17 locales, is rejected. That is this project's established pipeline:
strings are authored in app_en.arb, gen-l10n emits English fallbacks, and
untranslated.json tracks the gap, which it now does for these keys. Every
string in the app arrived this way, so it is not a defect this branch
introduces.
The ambiguity test was verified to fail against the pre-fix code.
handleResponse looked up the reply's prefix, and when that matched nothing
pending it fell through to "first pending command for this repeater". So a
straggler from an expired command could complete an unrelated in-flight
one, reporting one command's output as another command's result.
The service already carries a correlation token in every command and every
reply echoes it. The fallback discarded that. Now a reply that carries a
prefix is only ever matched to the prefix's owner; if there is no owner it
goes to the unmatched handling added in #528, where an expired command is
still named. Only a reply with no prefix at all, which has no correlation
token to honour, may fall back to matching by repeater.
Not reachable from today's callers: all four pass retries: 1 and the
settings refresh awaits each command, so two are never in flight to one
repeater. It becomes live the moment anything issues concurrent commands,
which any retry work would.
The two negative tests were verified to fail against the old logic and
pass against the new, so they are a real guard rather than a restatement.
The two preservation tests pass either way by design.
_registerPending is extracted so the test seam and the real send path
cannot drift apart.
Part of epic #473, stacked on #528, #529 and #531.
The timer ran timeoutMs while the message printed
(timeoutMs / 1000).ceil(), so every window in (4000, 5000] announced
"timeout after 5 seconds". The owner's 0-hop window was 4074 ms and fired
at 4.07 s while claiming 5, which is what made the behaviour look
arbitrary rather than deterministic: the number shown was never the
number used.
The service now throws a typed RepeaterCommandTimeout carrying the window
that was actually armed, formatted to one decimal. Every existing caller
already stringifies the error, so all of them inherit an honest figure
without being touched; the CLI screen additionally renders it through a
new localized string rather than the generic error wrapper.
Tests pin that 4074 reports 4.1 rather than 5, that the new 28748 ms
budget reports 28.7 rather than 29, and that two windows inside the same
second no longer collapse to the same text, which was the defect's
signature.
Part of epic #473, stacked on #528 and #529.
A repeater reply that arrived after its command's window closed hit
`if (commandId.isEmpty) return;` in RepeaterCommandService.handleResponse
and was dropped with no log and no UI. Since the command timeout can be
shorter than the app's own message-retrieval budget, that made "the
command ran but the response was never reported" the normal outcome
rather than an edge case, and it affected every repeater screen, not
just the CLI one.
RepeaterCommandService now remembers a timed-out command's prefix for two
minutes, so a reply arriving afterwards can be attributed to the request
it answers. Replies that reach no waiting command are handed to a new
onUnmatchedResponse sink and logged through appLogger. No path through
handleResponse returns without either completing a command, surfacing the
payload, or logging why it could not.
The CLI screen renders these as a distinct history entry naming the
original command and how late it was. The settings screen applies the
value if it is a `get` reply and tells the user it arrived late.
repeater_status_screen already parsed responses independently of the
service, so it had no silent-loss path to fix.
Part of epic #473. Does not change the timeout window itself (#529),
the reported duration (#531), or the stale-prefix fallback (#532).
Badge stays observers-primary; tooltip/long-press now read 'N observers . M
observations' so they reconcile with CoreScope's 'Observations (N)' feed (the
two are distinct metrics: 15 distinct observers vs 34 total sightings). Refresh
feedback moved from a bottom snackbar to an auto-dismissed top MaterialBanner,
out of the way of the composer. Part of #524.
Agent: QuietSnow (session 31eaba02)
Best-effort GET /api/packets?hash=H&groupByHash=true against a CoreScope
instance (default map.okimesh.org); returns observer_count or null. Never
throws, so the chat UI degrades silently to radio-only when offline or the
hash is unknown. Part of epic #524.
Agent: QuietSnow (session 31eaba02)
Children of #471 (parent stays open for AAB hardware validation, #507).
The block list was one global unscoped list on the phone, unioned onto
every radio on connect. A stale block for one of the owner's own radios
therefore rode onto every fresh/erased radio, and clearing a radio never
stuck: any other radio still holding it re-seeded the global list on
connect, which re-pushed it back.
- #505 block_store.dart: scope keys/names by connected device key (like
the app's other stores); dropLegacyGlobal() deletes the legacy
block_keys_v1/block_names_v1 (drop-and-start-fresh, owner-approved).
No global list.
- #505 block_service.dart: load() drops the legacy global and starts
empty; loadForDevice(deviceKey) swaps the in-memory set per radio and
runs the #250 self-heal. All mutating ops serialized through a Future
chain so loadForDevice and importKeys (different connector frame
handlers, both unawaited) cannot interleave and wipe each other.
- #506 meshcore_connector.dart: the device-key hook loads the connected
radio's list, so the offload union reconciles within that one radio.
Existing radio-side firmware blocks left untouched (no auto-CLEAR on
migration, owner-approved). Tests: per-radio isolation, clear-sticks
across reconnect, legacy-drop, disconnect-clears, load/import race.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
A transient upstream 503 (e.g. Hugging Face) hard-failed the model download and
surfaced it as an error (#229). The download requests (HEAD, single GET, range
GET) now go through sendModelDownloadWithRetry: 5xx/429 responses and network
exceptions retry with bounded exponential backoff (1..30s, <=5 attempts, honors
Retry-After, cancellable); terminal 4xx (e.g. 404) fail immediately. The retry
logic is a pure injectable top-level function, unit-tested (503-then-200,
persistent-503, 404-no-retry, network-exception, cancel).
Manual retry after a sustained failure is the existing "Download model" button
(re-invokes the download); no new UI added. Build of epic #422.
Follow-up to #457. Swept the em-dash character (U+2014) out of the test
tree (test descriptions and comments) and cleaned 8 em-dashes that
landed in lib comments via the #456 refactor after #457 merged, so the
tree is back to zero. Same rules: replaced with commas/colons/periods,
preserved the lone "no data" glyph placeholders, left non-English ARB
untouched.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Profile is now a container of capability-scoped sections (schema_version 2):
- wifi (WifiConfig) — any wifi device
- mqtt (MqttSection = region + status_interval + brokers) — observer capability
so MQTT is defined once and shared by observer / observer-repeater /
observer-companion, never redone per device. Future radio/repeater/companion/
display sections slot in alongside.
Parser reads the sectioned YAML and rejects the old flat v1 layout with a clear
message. Enumerator reads from sections but emits the SAME firmware keys, so
apply/diff/screens are unchanged. 45 config-profile tests updated + green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
A max-length DM built a 170-byte frame but this BLE link only writes
ATT_MTU-3 (=169) bytes, so writeCharacteristic threw. The DM path swallowed
the throw and never resolved the message, leaving it "active" forever and
silently blocking every later DM to that contact until force-stop+reconnect.
- Size: maxContact/ChannelMessageBytes take an MTU-aware frame budget
(BLE = mtuNow-3, USB/TCP = maxFrameSize); composers pass
connector.effectiveMaxFrameSize. The channel cap now also subtracts the
"Name: " prefix so a small-MTU link can't overflow.
- DM wedge: _sendMessageDirect propagates the failure and the retry callback
is awaited, so a failed send marks the message failed and drains the
per-contact queue. Added a RESP_CODE_SENT safety timeout.
- Channel wedge: sendChannelMessage clears the stuck queue id and marks the
message failed on a failed write.
- Tests: MTU-aware caps + failed-send-does-not-wedge regression.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The 172->176 ceiling raise made the existing "drops oversized frames and
resyncs" test's 173-byte frame a valid length, so it buffered instead of
dropping (it was red). Derive the over-max length from the ceiling so it stays
a genuine oversized frame and still exercises drop-and-resync, confirming the
higher ceiling doesn't weaken corrupt-frame recovery. Full suite: 643 green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The frame decoder capped companion frames at 172, but the firmware's real
MAX_FRAME_SIZE is 176 (BaseSerialInterface.h, "+4 for transport codes").
Full-size caplog CHUNK frames (176 B) were silently rejected; only the final
sub-172 partial chunk survived, so a download reassembled just the last chunk
(e.g. "received 95 of 5141"). Caplog is the first feature to use full frames,
so nothing exposed this before.
- usb_serial_frame_codec.dart: usbSerialMaxPayloadLength 172 -> 176.
- serial_capture_screen.dart: erase-on-start (Start / Start&Reboot) for a clean
session ("didn't start at 0").
- 3 decoder regression tests; 113 tests total green; analyze clean.
Root cause confirmed with firmware (TopazHill): firmware streams the full
buffer correctly (wire trace 5175/5175); the client decoder dropped oversized
chunks. My earlier firmware-ring hypothesis was wrong.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
When the database can't open (e.g. the native sqlite library fails to load),
every read/write silently failed and the app opened to an empty, normal-looking
screen — the user thinks their history was wiped (SAFELANE §6 violation).
Probe the storage layer in main() before any store reads
(BlobStore.verifyReadWrite). On failure, a StorageHealthService one-way latch
records it, and a persistent, non-dismissable banner is shown above the whole
app: history is not lost, storage is unavailable, messages are NOT being saved,
restart after fixing. Cross-platform (probe goes through drift, covers web too).
Tests: service state/latch + banner show/hide widget test. Gemini-reviewed.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
formatNotificationText used GifHelper.parseGif (Giphy only) while the chat
renders via resolveGifUrl (Giphy + allowlisted Tenor CDN). An allowlisted
Tenor GIF therefore rendered inline but still dumped a raw URL into the
notification tray.
Point both at resolveGifUrl so the tray summarises exactly the set the chat
displays. Off-allowlist URLs still pass through as plain text, pinned by test.
This is the same duplicate-detection drift that caused #284; closing it at the
source rather than shipping a known inconsistency.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Notifications summarised a GIF as "Sent a GIF" using their own hand-rolled
`^g:[A-Za-z0-9_-]+$` regex rather than GifHelper. #282 changed the payload to
`https://giphy.com/gifs/<id>`, which that regex does not match, so GIF
notifications regressed to dumping the raw URL into the tray.
Detection now goes through `GifHelper.parseGif`, matching how the adjacent
reaction case already delegates to ReactionHelper. That restores the summary
and covers every form the app can send, including replies (`@[Name] ` +
payload), which the old regex never matched even for legacy `g:<id>`.
Verified no other hand-rolled `^g:`/`^m:`/`^s:`/`^r:` payload regexes remain
outside their owning helpers, so this class of drift is closed.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Blocking yourself silently hid your own traffic with no visible cause,
and because blocks are offloaded to the radio it was pushed there and
could be pulled back by the connect-time union.
BlockService gains a selfKeyHex, injected by the connector when the self
key is learned and cleared on disconnect. Every add path refuses it
(block, importKeys, maybePromote) — importKeys specifically, so a
self-block already on the radio cannot be re-imported. setSelfKey also
heals an existing self-block and pushes REMOVE, covering the case where
the union pull lands before self-info arrives. Contacts and discovery
sheets hide the Block option for your own node.
Per Gemini review: heal on an unchanged key too (an early return would
strand a self-block introduced after the key was known), and order
setSelfKey so all in-memory state settles synchronously, keeping callers
consistent even though the connector fires it unawaited.
Adds test/services/block_service_test.dart — the first coverage for
BlockService (10 tests).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The broker-pool GET put a single fixed 6s deadline on the entire paginated dump. A large pool (6+ brokers) streams field-by-field over ~8s and blew the deadline, so the client falsely reported the pool as not finished even though the device sent it all (the END terminator arrives after the client gave up). Re-arm an inactivity Timer on each received frame: a steadily-streaming dump never times out; only a genuine stall (no frame for the timeout window) fails. Adds a TDD test - a slow-but-steady dump, frames under the timeout but total far over it, must complete.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The write half of the broker editor, against RedCreek's confirmed field-at-a-time
contract. The existing 0xC0 key/value command already carries the broker keys --
no new wire codes -- so the codec comment at observer_config_client.dart:166 is
stale, not a gap.
- saveBroker(): disable a live slot first, write each changed field, write
`enabled` LAST. Stops at the first ERR/timeout and reports the failed field --
a partial save leaves the slot disabled, never live-corrupt (activation guard).
TDD: ordering + partial-failure tests.
- clearBroker(): mqtt.broker.<slot>.clear.
- getBroker(): single-slot re-GET via 14 per-field GETs (recovery / post-save
read), not the 84-frame pool dump. Password is write-only -> best-effort.
Key spellings (mqtt.broker.N.enabled / .clear, scalar field GET) are inferred
from the existing scheme; they're the one thing the joint firmware test confirms.
12/12 service tests green. UI (brokers screen + editor) next.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Three observer-delta fixes (per the #80 sync diagnosis / G2):
- A: settings screen gates the Observer category via context.select on the
supported flag, not a connector-wide context.watch -- the watch rebuilt the
whole settings screen on every sync frame, thrashing the UI thread.
- B: a flat Save re-reads only the flat settings (refresh includeBrokers:false),
never the 84-frame broker pool -- no BLE re-flood for a display toggle.
- C: the initial observer read is deferred until the device's channel/contact
sync settles, so it never competes with that sync for BLE.
TDD: B (no OCFG_BROKERS on a flat refresh) + C (refresh deferred while syncing,
fires once idle). Full observer suite green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The G2 BLE log showed the config protocol works (GETs return values; the broker
dump starts) but the firmware's broker dump stalls without BROKERS_END, so
getBrokers() times out. The client was treating that as a TOTAL failure --
discarding the 7 flat settings it read cleanly and blanking the pane.
Now the broker pool loads independently: refresh() builds + shows the flat
config even when getBrokers fails, flags brokersUnavailable, and the pane shows
the broker section as "unavailable" instead of going stale. Flat settings stay
usable. TDD red->green; full observer suite (39) green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Closes the 2 MINOR findings from the G1 re-review (#76):
- MINOR-A: ObserverConfigService.refresh() no longer wipes lastError / clears
stale on a PARTIAL read. A null from any getFlat is a failed read; the
snapshot is marked stale and the error kept (error-visibility).
- MINOR-B: the settings pane validates status_interval against the firmware
range (10-3600) before sending; an out-of-range value is not put on the wire
and the user is told.
TDD: both tests RED first (current sent '5'; refresh wiped the error), GREEN
after. Full observer suite (37 tests) green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
main.dart wiring verified correct (no change): the singleton MeshCoreConnector
(main.dart:38 -> field -> provided by value) is the SAME instance passed to
ObserverConfigService, so the service watches the live transport. Plain
ChangeNotifierProvider (not a proxy) is right -- the connector instance is
stable; only its state changes, which the service reads live. Lazy-safe: the
constructor has no side effects.
This test pins that contract: the service is reachable through Provider and a
mutation to the shared connector's caps flips the Observer gate (supported).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
4 tests for ObserverConfigService via a fake connector (subclass override of
the 4 members the service uses -- no production change). 2 green (capability
gate, happy-path setFlat). 2 RED BY DESIGN, documenting the Gemini findings to
be fixed by S1 (#73):
- BLOCKER #1: overlapping getFlat/setFlat cross responses (single-flight is
assumed, not enforced) -- setFlat receives the GET's value, not its ACK.
- MINOR #6: a secret key name leaks into the error string
("SET wifi.pwd failed: ...").
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
PathHistoryService capped each contact's recentPaths at 100 but dropped any new distinct path once full, so the list froze on the first 100 ever seen and never refreshed with newer/better routes. Evict the lowest-_scorePathRecord entry to make room, keeping the strongest 100. Adds a regression test (full history evicts the weakest to admit a new path).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add Linux BLE pairing helper that drives bluetoothctl for pair/trust/PIN
entry, with Completer-based flow control, explicit retry loop, and named
timeout constants.
- LinuxBlePairingService: pair-and-trust with up to 2 retries
- LinuxBleErrorClassifier: map bluetoothctl stderr to user-facing errors
- Conditional import stub for web builds (dart.library.io gate)
- Scanner screen: PIN dialog integration for Linux pairing flow
- MeshCoreConnector: Linux pairing/recovery/reconnect wiring
- l10n: 4 new pairing keys across all 14 locales
- 12 unit tests (pairing service + error classifier)
- Clamp ML predictions between physics floor (raw airtime) and ceiling
(worst-case formula) so model can never produce unsafe timeouts
- Replace hourOfDay feature with secondsSinceLastRx for network activity
- Remove unused _ContactStats.stdDev and dead model persistence code
- Debounce observation writes (2s) instead of writing on every delivery
- Skip recording observations when pathLength is null to avoid corrupting
training data
- Add comment explaining global (not per-contact) RX time tracking
- Remove notifyListeners from retrain to avoid unnecessary widget rebuilds
- Run dart format
Train a linear regression model on actual message delivery times to
predict tighter timeouts, replacing worst-case physics estimates.
Features: path length, message bytes, seconds since last RX, flood mode.
Global model with per-contact blending after 10+ observations per contact.
Falls back to existing physics formula when model has insufficient data.
- Implemented TCP transport service for native platforms.
- Added TCP connection screen with input fields for host and port.
- Integrated TCP connection options into the scanner and USB screens.
- Updated localization files for new TCP-related strings.
- Added tests for TCP connection flow and error handling.
- Enhanced USB screen to include TCP connection option.
- Improved layout to ensure no overflow in narrow widths for scanner and USB screens.
- Introduced debug logging in USB serial services for better traceability.
- Added reset method to UsbSerialFrameDecoder to clear buffered data.
- Updated tests to verify the reset functionality of the decoder.
* feat: add LOS workflow, global units, l10n cleanup, and mobile UI overflow fixes
Squashes prior PR commits into one changeset including: LOS map/service/tests, global metric/imperial unit system adoption, notification/BLE safety fixes, app-wide localization backfill/mojibake cleanup, and responsive UI title/overflow hardening.
* l10n: revert unrelated locale churn for LOS feature
* feat: keep LOS with app-wide unit settings
* fix: resolve post-merge app bar/import analyzer errors
* style: format screen files for CI