diet-guard/app
Krzysztof kuhy Rudnicki b77145010c Stop asking for meals on a shared free day
Third app onto freedays (~/utils/freedays), the shared pool of
pre-declared days when every gate app stands down. due_slots() returns
nothing on a free day, so no slot is ever due, the lock never opens and
nothing is said about the missing meals.

Read from one local file, never the network, so this cannot hang the
systemd-fired gate -- and an unreadable pool reads as "not free", which
means the normal rules apply rather than the gate quietly switching
itself off. Tested explicitly: fail closed, not open.

The conftest redirect is load-bearing. The pool lives under
~/.local/share, outside every diet_guard path the suite already isolates,
so without it a real free day on this machine would fail every "the gate
is due" test here for a reason that looks nothing like the cause.

gatelock moves v0.7.2 -> v0.7.3, and the pylint hook's own pins (which
had drifted further, to gatelock v0.7.1 and crdt-sync v0.6.0) come with
it. Not cosmetic: pip refuses two different direct URLs for one
distribution, so any stale pin alongside freedays -- which requires
v0.7.3 -- is an unresolvable environment rather than a warning.

requirements.txt also picks up pylint 4.0.8, pytest-randomly 5.0.0 and
ruff 0.16.6, which the freshness gate flagged once this file was touched.
1043 tests pass at 100% coverage across the pytest-randomly major bump.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-07 15:22:38 +02:00
..
.agents/skills Fix pre-existing CI failures (deps, lint, whitespace) 2026-07-10 23:55:56 +02:00
android Latest stable dependencies, and the gate that keeps them there 2026-08-28 15:23:13 +02:00
assets/icon app: warm-tint the shared palette, fix Snack chip + on-fill contrast 2026-07-21 21:16:26 +02:00
bin Finish the three sync bugs: gate, SIGKILL flag, and silent catches 2026-08-09 22:28:18 +02:00
desktop app: package the desktop app as the web build, and delete the Linux embedder 2026-07-20 16:32:24 +02:00
lib fix: clear every macro field before a prefill, add the phone's delivery button 2026-08-23 09:34:47 +02:00
test fix: clear every macro field before a prefill, add the phone's delivery button 2026-08-23 09:34:47 +02:00
web app: run the companion app's desktop target as a web build 2026-07-20 16:31:32 +02:00
.gitignore Add Flutter companion app skeleton with local meal logging 2026-06-22 18:22:42 +02:00
.metadata app: run the companion app's desktop target as a web build 2026-07-20 16:31:32 +02:00
analysis_options.yaml Persist the CI-mirror's analyzer excludes and dependency upgrades 2026-08-14 16:13:46 +02:00
install_arch.sh app: package the desktop app as the web build, and delete the Linux embedder 2026-07-20 16:32:24 +02:00
pubspec.lock Latest stable dependencies, and the gate that keeps them there 2026-08-28 15:23:13 +02:00
pubspec.yaml Stop asking for meals on a shared free day 2026-09-07 15:22:38 +02:00
README.md Adopt the four markdown namespaces and gate them 2026-08-24 15:57:20 +02:00
run.sh app: package the desktop app as the web build, and delete the Linux embedder 2026-07-20 16:32:24 +02:00
skills-lock.json Add Flutter/Dart agent skills and AI rules for Claude Code 2026-06-22 22:53:06 +02:00

diet_guard_app

Companion app for diet_guard: log meals on the phone, and on the Linux desktop, sharing one food log through GitHub-backed sync.

Two targets, and only two

Target What it is
Android a normal Flutter app (flutter build apk)
Linux desktop the Flutter web build, served by a local wrapper and shown in a Chrome --app window

There is no linux/ directory. Flutter's GTK embedder manages ~20fps at 3840x2160 -- measured on a stock flutter create counter app, so it is the toolkit rather than this code -- where the same Dart rendered by Chrome sustains ~144fps (~/todo/docs/DOCS-desktop-performance-findings.md). Running flutter create --platforms linux here would silently restore the slow path.

Commands

flutter test                     # the app's suite
flutter analyze
bash run.sh                      # build the web bundle and launch the desktop app
bash install_arch.sh             # build + install the pacman package and .desktop entry
flutter build apk --release      # the phone build
adb install -r build/app/outputs/flutter-apk/app-release.apk

Never adb uninstall or pm clear this package: both wipe the on-device log.

The desktop wrapper

bin/diet_guard_desktop.dart is the other half of the desktop app, because a browser cannot touch the filesystem. It:

  • serves the built web assets from build/web (or /opt/diet-guard-app/web once packaged);
  • keeps an on-disk copy of every document and photo under ~/.local/share/diet-guard-desktop/, which is what makes a wiped Chrome profile recoverable -- for photos it is the only copy, since they never sync;
  • holds the GitHub token (~/.config/diet_guard_app/sync_token, falling back to the PC gate's ~/.config/diet_guard/sync_token) and proxies api.github.com plus the device flow, whose endpoints send no CORS headers and so cannot be called from a page at all.

The port (8732) and the Chrome --user-data-dir must stay fixed. IndexedDB is keyed by origin and lives inside that profile, so changing either looks to the app like a device with no history.

Platform seams

dart:io does not fail a web compile; it becomes a stub that throws at runtime, so the symptom of a missed seam is a blank white window rather than a build error. Every platform edge is a conditional export -- document_store*, blob_store*, background_tasks*, notification_backend*, token_vault*, github_client_factory*, attached_image*. Branch on kIsWeb before any Platform.is…, which itself throws on web.

What the desktop genuinely loses, by design rather than omission:

  • Background reminders. A browser runs nothing once its window is closed, so the due-slot check runs in-page every 5 minutes while the window is open. On the PC the real backstop is diet-guard-gate.timer, which locks the screen.
  • Camera capture. The browser picker is a file input.
  • Photo sharing between devices -- unchanged: imagePath was always stripped before push.

Sync identity

Three devices push under diet-guard-sync/devices/: pc (the Python gate), phone, and desktop. Each must keep its own id -- two devices sharing one would overwrite each other's pushed log on every tick.