Twenty-eight commits landed on the web app and the API since the phone was last touched, and the phone's own README opens by claiming full feature parity. It was not a small drift: a whole tab, two whole cards, and the two settings that decide how a time is read. The scheduler arrives as the third charging tab. One list of tasks covering every charger the account owns, where the charger's own cloud schedule is one window inside one box. A task is a flow — start at 23:00, cap to 10 A at 01:00, stop at 06:30 — on the days and the chargers it names, and naming no charger means all of them, including the ones imported later. The clock is the server's, so the tab only writes tasks and reads back how each one last went, and any step can be fired now to find out whether it will reach the charger before the night it matters. The RFID card comes with it: the list the account holds, a card added by its number or by holding it against the charger's own reader, and the charger's own list read back from the device. Both halves are written by every add and remove and they can still come apart, so when they disagree the card says which list each card is missing from — nothing else on the page would. The charger settings card the phone never had at all goes in whole rather than only its new half. Over Modbus that is the four writable registers; over the cloud it is the charger's whole settings group in sections, drawn from the same block table the web reads, one write per section because the charger takes a command whole and a schedule carrying only its switch is a schedule whose times have just been set to midnight. The clock and the week become settings. format.dart grows formatTime, the weekday order and the short names, with "auto" asking intl's own hour pattern and FIRSTDAYOFWEEK rather than a table here; Settings › Appearance asks both questions beneath the date. Flutter's own picker renders on the device locale, which nothing in this app steers, so TimeField types four digits on whichever clock is in force and keeps the meridiem as its own control — a box reading 13:45 beside a dial saying 01:45 PM is the disagreement the setting exists to end. The smaller ones travel too. The control card says which charger its buttons drive, picture and name, because it follows a serial and not the highlighted row; its two tiles take the names of the readings they actually hold; and the limit slider leaves it wherever a settings card now owns that value. The list's reachability re-asks every thirty seconds while the tab is in front, merged rather than replaced — "we could not ask" is not an answer, and it certainly is not "unknown". A settings frame that answers half a minute late is chased at widening gaps and then given up on. The information card names the fields the service sent under its own names and groups list records under their own, so list[0].* stops being read as one alphabetical run. An inherited integration field shows what it inherited rather than an example. The sign-in fields say nothing until you type. One gap stays open, and deliberately. The task form sends the phone's zone only when Dart reports an IANA name; Android usually answers with an abbreviation like CEST, which is not a zone, so it sends nothing and the server falls back to its own clock. A name the server would misread is worse than no name. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
381 lines
23 KiB
Markdown
381 lines
23 KiB
Markdown
# DriverVault — Phone App (Flutter)
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A Flutter client for the DriverVault maintenance tracker. Talks **only** to the
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API Server (same contract and auth as the web app — a PocketBase token relayed by
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the server, not a JWT the server mints). At full feature parity with the web app.
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Project name `drivervault_phone`, package id `com.drivervault.phoneapp`.
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**Android is the supported target** — the older Flutter-web build path is
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deprecated.
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## Features
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Once signed in, `RootShell` hosts the app behind a persistent **bottom
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navigation bar** — Garage, Charging, Settings, and Users for admins — in an
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`IndexedStack`, so each section keeps its state as you switch tabs.
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- **Login** — email/password against `/api/auth/login`, password show/hide, and a
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collapsible **Server settings** section holding the address of the server the
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form signs into — plus the way back to the others once more than one has been
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added (see *More than one server*).
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- **Biometric / face sign-in + app lock** — see the dedicated section below.
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- **Garage (dashboard)** — car list with next-due status badges (date + km,
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worst-of), a "shared" chip on cars owned by someone else, pull-to-refresh and
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an **Add car** FAB. The header carries the **server picker** (see below), the
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theme toggle and log out.
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- **Car detail** — all spec fields (incl. VIN and transmission / differential /
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brake / coolant specs), a **share** sheet (owner only), quick odometer update,
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edit car, and delete car (type-to-confirm; cascades). Actions are gated by the
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caller's access level (read-only vs write vs owner).
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**Which tabs a car shows, and in what order, belongs to the car** — the same
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arrangement the web app reads, so everyone it is shared with sees the same
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page. Edit it under the **tune** icon: switch tabs, Information rows, Service
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history columns and the parts a service can change on or off, and drag any of
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the first three lists by its handle to reorder it. (The parts have no order —
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they are a checkbox list inside one column, and their position says nothing a
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tab's or a column's does.) (The web rearranges by dragging the tab bar and the
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column headings themselves; on a touch screen those gestures belong to the tab
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bar and the scroll, so every arrangement is made in the picker instead.) Two
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things cannot be switched off: Information — a page with no tabs left would be
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a dead end — and the service Date, since a history with the day taken out
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stops being one. Both can still be moved. The tabs, in their default order:
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- **Connected service** — everything the manufacturer's own app knows about
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this car, read live under *your* account: headline readings (odometer, fuel
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or battery, range, charging state, position), the vehicle record, and one
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card per capability the plugin exposes, rendered from the server's flattened
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key/value pairs so a provider adding a field surfaces it without an app
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change. Offers to take the provider's odometer when it is ahead of the
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stored one. A car with no link yet gets a **connect** card instead, and the
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tab is hidden entirely for a user with no manufacturer account connected.
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Because the read runs under your own credentials, a car shared from someone
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else shows data here only if that vehicle is on your account too — it says
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so rather than failing.
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- **Service history** — date/odometer plus which parts were changed, with the
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next-due date/km derived by the server. The web lays those out as table
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columns; a phone has no width for a seven-column table, so a card renders the
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same columns as pieces — consecutive short ones share a wrapping line, and
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the parts, the notes and the file each take a line of their own. It reads the
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car's own hidden set and order, so a column switched off on either app is off
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on both, and the arrangement decides the grouping: move Notes between Km and
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Next date and the short columns split around it. Every part a service can
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have changed shares the one **parts** column — they are a growing list, and a
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column apiece would widen the web's table without end — and both that column
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and the form's Changed parts section come from `lib/service_parts.dart`, the
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twin of the web's `lib/serviceParts.js`. Which of them this car records is
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the car's own choice as well: a part switched off leaves the form's
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checkboxes and the cards' chips together, and nothing is written to the
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records, so switching it back on brings the old chips back.
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- **Technical check history** — the mandatory roadworthiness inspections
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(przegląd techniczny, MOT, TÜV). Result, cost, station, and the certificate's
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valid-until, which overrides the car's interval when present. A failed check
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derives no next date.
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- **Maintenance** — workshop visits and repairs outside the routine schedule:
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type/status, workshop, parts used, labour + parts cost, invoice number and a
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warranty-until badge.
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- **Fuel** — refills with a summary panel (average / best / worst consumption,
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cost per km, price per litre). Consumption is measured between full tanks, so
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partial fills roll into the next full one and a flagged missed fill leaves its
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window uncomputed rather than reporting a fictional figure.
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- **Charging cost** — charges with a summary panel (average / best / worst
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kWh/100km, cost per km, price per kWh). The electric twin of Fuel, and
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derived the same way: consumption is measured between full charges, so a
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top-up rolls into the next full one. Distinct from the **Charging** section
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in the bottom bar, which is the charger network and OCPP control.
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- **Documents** — insurance, registration, road tax and the rest, with a
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renewal badge driven by the server's expiry assessment.
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- **Parts catalog** — the per-car parts list.
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- **Reminders** — date- and/or odometer-triggered, one-off or recurring, with a
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**Mark done** action. Reminders the server derived from a document or service
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record are shown read-only.
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- **Attachments** — one optional file per service record, technical check,
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workshop visit, refill, charge, document and part (PDF or image, up to 10MB). Picked
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with `file_picker`, fetched back through the API Server — never a public URL —
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and opened with the phone's own viewer via `open_filex`.
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- **Charging** — mirrors the web `Charging.vue`, split into three tabs.
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**Public** is a discovery map with a demo session and nearby stations:
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presentational placeholders, because there is no public-charging API yet (same
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as the web). **Home** is not a placeholder. It lists the chargers you own —
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imported from a service you connected, the same move the garage makes for a
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car — and above them six cards about the one you picked:
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- **control** — start/stop, boost, skip a start delay, reboot, and the current
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limit on the one transport that has nowhere else to put it. It opens with
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the charger it acts on, picture and name, because the buttons drive whichever
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serial is in force and that is not always the record highlighted below.
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- **RFID cards** — who may start a charge without a phone. The list the
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account holds, a card added by number or by holding it against the charger's
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own reader (the reader opens for twenty seconds and the number arrives on its
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own), and the charger's own list read back from the device, which is the half
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that actually decides whether a card opens it. When the two disagree the card
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says which list each card is missing from.
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- **charger settings** — what the charger is set to, written back. Over Modbus
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that is four registers (the current limit, phase count, boost, the control
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timeout); over the Anker cloud it is the charger's whole settings group, in
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sections — charging, schedule, load balancing, solar, panel and light, local
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network — one write per section, because the charger takes a command whole.
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- **connection** — which charger, and either its serial or its address on your
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network.
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- **readings** — everything the charger reports: per-phase power, its
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settings, what it is, and any alarm.
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- **information** — everything the record holds, with the service's live view
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of whether it is reachable, the fields the service sent under its own names,
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and each of the account's per-charger views read a record at a time.
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Control needs a mode picked under Settings → Integrations — Modbus TCP over
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the local network, the Anker cloud, or Own/Proxy CSMS over OCPP — but the
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information and RFID cards stand without one. Each card folds away, remembered
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per device; the tabs and the cards rearrange from the ⇅ button in the app bar,
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and that arrangement is saved on your profile, so it follows the account the
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way the garage order does. A card added after you arranged yours appears beside
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the neighbour it was written to sit under, rather than at the bottom.
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**Scheduler** is the third tab: one list of charging tasks covering every
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charger you own, where the charger's own cloud schedule is one window inside
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one box. A task is a whole flow — start at 23:00, cap to 10 A at 01:00, stop at
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06:30 — on the days you pick and the chargers you pick, named once and switched
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on and off as one. Naming no charger means every charger you own, including the
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ones you import later. The clock is the server's, so a task fires whether or
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not the app is open; each row says how its last firing went, and any step can
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be fired now to find out whether it will reach the charger before the night it
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matters.
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- **Settings** — account (name / email verification / password), appearance
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(theme + dark mode, **language**, **region**, date format, **time format**,
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**first day of the week**, **currency**, font size), profile (avatar via `image_picker`, bio), **integrations** (Toyota,
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Anker Solix), **Security** (biometric toggle), **Organization** (create your
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own — which makes you its admin — or rename/delete the one you administer),
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**data export/import**, and the account-deletion state machine. Export writes
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the account JSON into the app's own documents directory and offers to open it;
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import picks a previously exported file and always creates new records, so it
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asks first, with the number of cars the file actually holds. Auth relays PocketBase's own stateless
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tokens, so there is no per-device session list to show or revoke.
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- **Users (admin)** — user management tab (list / create / role / reset password
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/ delete), shown only for the admin role. A blocked control says why rather
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than only greying out: long-press a locked role picker, and the overflow menu
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carries the reason under the action. Superadmins also choose which
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organization a new account lands in (or none at all); an admin gets no picker,
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because the server puts their members in their own organization regardless.
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- **Android Auto** — the garage on the car's own screen, read-only: which car
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is overdue, and what it has coming. See *In the car* below.
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Sharing/ownership: `Car.access` drives `isOwner` / `canWrite` / `isReadOnly`
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getters that gate the UI, mirroring the server's access checks.
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## Language, region & currency
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Language and region are two pickers over the one stored BCP-47 tag (`en-US`), so
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the pair can be mixed — English in Poland, say. Currency is display-only: nothing
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is converted, so changing it reinterprets existing amounts rather than
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recalculating them. All three lists mirror the API's (`validCurrencies` and the
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locale pattern in `internal/api/me.go`), with two deliberate differences from the
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web app:
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- **Luxembourgish (`lb`) and Romansh (`rm`) are not offered.** `intl` ships no
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date/number symbols for them and *throws* rather than falling back, which would
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take out every date on screen. The browser has full ICU data behind it and has
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no such limit, so the web app can list them.
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- **Labels are hand-kept** (endonyms for languages, English for regions and
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currencies) because Dart has no `Intl.DisplayNames`.
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Because the server only validates a locale's *shape* (`^[a-z]{2}-[A-Z]{2}$`), a
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tag the phone cannot render can still arrive from the web. `format.dart` resolves
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through a supported-language check and falls back to `en-US` instead of throwing;
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`test/models_format_test.dart` covers it.
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Every screen reads its text from the language files, and `flutter test` fails if
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a key exists in English but not in Polish or Danish. See
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[TRANSLATIONS.md](../TRANSLATIONS.md).
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## Biometric / face sign-in & app lock
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Fingerprint and face-recognition sign-in via `local_auth`, with credentials kept
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in Android Keystore–backed secure storage (`flutter_secure_storage`).
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- After a successful password login the app offers to **enable biometric login**;
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the entered (known-good) credentials are stored securely.
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- The login screen then shows **"Sign in with face recognition / fingerprint"**
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buttons (labels reflect the enrolled biometric kinds) and auto-prompts once.
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On success the stored credentials are replayed against the normal login API, so
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each biometric sign-in mints a fresh session. Stale credentials (e.g. after a
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password change) auto-disable biometric login.
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- **App lock** — the token persists, so a valid session normally restores silently.
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When biometric login is enabled the app instead starts **locked** (and re-locks
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when backgrounded) and shows a lock screen requiring a biometric unlock. A
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**30-second grace period** means quick app-switches don't re-lock; a full app
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close (process kill) always locks on next launch. "Use password instead" on the
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lock screen logs out and returns to the login form.
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- Manage it under **Settings → Security** (enabling re-confirms the password).
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Android host requirements (already configured, don't revert):
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`MainActivity` extends **`FlutterFragmentActivity`** (required by `local_auth`),
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and `AndroidManifest.xml` declares `android.permission.USE_BIOMETRIC`.
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## More than one server
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Two sites, two full DriverVault stacks — and one app. The server picker is the
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first button in the Garage header: it names the server you are reading right
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now, and switches between them in a tap. With only one server known there is
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nothing to pick between, so it goes straight to adding the second.
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- **The home server** is the address this build ships with (`kDefaultApiBase`,
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overridable per-device from the login screen's **Server settings**). It is
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always in the list and can't be removed.
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- **Any other server** is added by address — `https://garage.example.com`; the
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`/api` is appended for you if you leave the path off — and has to be reachable
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from wherever the phone is.
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- **A session per server.** Each server is its own PocketBase with its own users,
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so a token can't be carried across: you sign into each one once, and after that
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switching needs no password. Sessions live in `SharedPreferences` under
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`cc_session_<id>`, the list under `cc_servers`, the active one under
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`cc_active_server`.
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- **Switching rebuilds the shell**, because record ids belong to the server that
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issued them — the garage, the charging page and the settings all re-read from
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the one now active, and its owner's appearance prefs come with it.
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- **An expiring remote session doesn't sign you out of the app**: that server's
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token is dropped, the app falls back to the home server, and the entry stays in
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the list to sign into again. Only *Log out* clears every server at once.
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Upgrading from a single-server build carries what was there onto the home entry
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— the saved session (`cc_token` / `cc_user`) and the address it was pointed at
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(`cc_server_url`) — so nobody is signed out by the update.
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## In the car — Android Auto
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The same APK is an Android Auto app. Plug the phone in and DriverVault is on the
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head unit: a **garage list**, one row per car with its due badge under the name,
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and a tap opens what that car has coming — the odometer, the next service, and
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the reminders the server holds for it, stored and auto-derived alike.
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There is no Flutter engine on a head unit. The car screens are
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[Car App Library](https://developer.android.com/training/cars/apps) templates the
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host draws itself, written in Kotlin under
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`android/app/src/main/kotlin/com/drivervault/phoneapp/car/`, and they take three
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things from the phone app rather than growing their own:
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- **The session.** `VaultStore` reads what the phone has already signed in with —
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the active server's base URL and its token — out of shared_preferences' own
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store, which both halves of the app share. Switch server on the phone and the
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car reads the new one; there is nothing to keep in step. A head unit is the
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last place to type a password, so if nothing is signed in the car says so and
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points at the phone. The one key added for this is `cc_active_base`, the
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*resolved* base URL: an untouched home entry carries no address of its own, its
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base being `kDefaultApiBase` — a compile-time define nothing outside Dart can
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read.
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- **The words.** `CarStrings` reads the same `assets/i18n/{lang}.json` files, by
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the same dot-path keys, in the language the account chose. A due badge on the
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head unit is the string `lib/format.dart` puts on the phone, not a second
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translation of it. Only four keys are the car's own (`carApp.*`): what to say
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when nobody is signed in, when the token has been refused, when the server
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can't be reached, and the Refresh button.
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- **The figures.** `CarFormat` is the twin of `lib/format.dart`: same date format
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and number grouping from the account's settings, same worst-of-date-and-km
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service badge, same wording for a reminder's status.
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Two things are deliberately unlike the phone:
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- **It only reads.** No car is edited, no odometer updated, no reminder marked
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done. A screen you cannot type into is a poor place to edit a car and a driver
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is a poor person to ask, so `VaultApi` has no write in it to reach for by
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accident.
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- **Worst first.** The host shows only the first few rows of any list, so the
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garage is sorted by badge rather than kept in the phone's order — the car this
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list exists to mention is the overdue one, not whichever was added first.
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One thing to know before turning it on: **the app lock does not reach the head
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unit.** Biometric login keeps the phone's own UI behind a fingerprint (see above),
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but that flag lives in memory and the credentials behind it in encrypted storage,
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neither of which the car service can read — and a head unit has no fingerprint
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reader to satisfy it with anyway. So a phone that is paired to a car shows the
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garage there, read-only, whether or not the phone itself is locked. Everything on
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those screens is maintenance data, and the phone still has to be the one plugged
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in, but it is the one place the lock stops short.
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Running it on your own car:
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- The service is declared under `androidx.car.app.category.IOT`. It is the
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closest of the categories the library defines — DriverVault is a garage, not a
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map, a media player or a parking service — and a Play Store submission would
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be reviewed against it. This build is sideloaded, so what matters instead is
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the next line.
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- Android Auto refuses apps it did not get from the Play Store until you tell it
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otherwise: in the **Android Auto** settings on the phone, tap the version ten
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times to unlock **Developer settings**, then turn on **Unknown sources**.
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- To try it without a car, run Google's
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[Desktop Head Unit](https://developer.android.com/training/cars/testing/dhu).
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A debug build accepts any host so the DHU can connect; a release build only
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accepts the signed hosts the library ships an allowlist for.
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## Configure the API endpoint
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The app talks to `kDefaultApiBase` (see `lib/config.dart`), default
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`http://localhost:8080/api`. Override at build time with `--dart-define`, or at
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runtime from the login screen's **Server settings**, which edits the address of
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the active server — on a fresh install, the home one (persisted in `cc_servers`).
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## Run & build
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```bash
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flutter pub get
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# run on a connected device against a LAN server
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flutter run -d <device> --dart-define=API_BASE=http://10.2.1.101:8080/api
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# build a debug APK for a real phone on the LAN
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flutter build apk --debug --dart-define=API_BASE=http://10.2.1.101:8080/api
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adb install -r build/app/outputs/flutter-apk/app-debug.apk
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adb shell monkey -p com.drivervault.phoneapp -c android.intent.category.LAUNCHER 1
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```
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Notes:
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- `android/gradle.properties` sets `kotlin.incremental=false` — required because
|
||
the project lives on drive `E:` while Gradle/Kotlin caches are on `C:` (the
|
||
incremental compiler can't compute cross-root relative paths on Windows).
|
||
- `AndroidManifest.xml` sets `android:usesCleartextTraffic="true"` because the API
|
||
base is a plain-HTTP LAN URL.
|
||
- The API Server must be running and reachable at the configured URL.
|
||
|
||
## Structure
|
||
|
||
```
|
||
lib/
|
||
├── config.dart # default API base URL (kDefaultApiBase)
|
||
├── models.dart # Car (+ access getters), the record types, integrations, profile
|
||
├── api.dart # ApiClient — the only thing that calls the API Server
|
||
├── auth.dart # AuthService — the active server's session, app-lock flag
|
||
├── servers.dart # ServerRegistry — the servers, their sessions, the active one
|
||
├── biometric.dart # BiometricAuth — local_auth + secure storage; biometricAuth singleton
|
||
├── app_settings.dart # AppSettings (theme/locale/date/font), persisted; drives MaterialApp
|
||
├── i18n.dart # translation lookup — t("key"); en/pl/da with en fallback
|
||
├── theme.dart # shared colours/tones (status badges, charging tiles)
|
||
├── format.dart # date/km formatting + next-service status (worst-of date/km)
|
||
├── service_parts.dart # the parts a service can change, in one list
|
||
├── main.dart # app root; routes Login / Lock / RootShell; lifecycle re-lock
|
||
├── widgets/
|
||
│ └── attachment_field.dart # pick / view / clear a record's attached file
|
||
└── screens/
|
||
├── root_shell.dart # bottom-nav shell: Garage, Charging, Settings, Users
|
||
├── login_screen.dart lock_screen.dart dashboard_screen.dart
|
||
├── car_detail_screen.dart car_form_sheet.dart record_form_sheets.dart
|
||
├── car_view_sheet.dart # which tabs/rows/columns a car shows + the catalogues
|
||
├── provider_tab.dart # the connected-service tab (MyToyota)
|
||
├── servers_sheet.dart # the server picker + the add / edit / sign-in sheet
|
||
├── charger_import_sheet.dart # a charger on a connected service becomes yours
|
||
└── charging_screen.dart settings_screen.dart admin_users_screen.dart
|
||
```
|
||
|
||
The Android Auto half is Kotlin, because the head unit draws its own templates:
|
||
|
||
```
|
||
android/app/src/main/kotlin/com/drivervault/phoneapp/
|
||
├── MainActivity.kt # the Flutter host (FlutterFragmentActivity, for local_auth)
|
||
└── car/
|
||
├── DriverVaultCarAppService.kt # what Android Auto binds to; the root screen + host validator
|
||
├── VaultStore.kt # the phone's session, read from shared_preferences' own store
|
||
├── VaultApi.kt # the reads the car screens make — no writes exist here
|
||
├── CarStrings.kt # t("key") over the bundled assets/i18n files
|
||
├── CarFormat.kt # dates, km and the due badges — the twin of lib/format.dart
|
||
├── VaultScreen.kt # load / loading / failed-with-a-Refresh, shared by both screens
|
||
├── GarageScreen.kt # the cars, worst badge first
|
||
└── CarDueScreen.kt # one car: odometer, next service, reminders
|
||
```
|