HAIM HAIM

Problem

The risk model existed only as slides and spreadsheets, with no guarantee that app and server computed the same result.

Solution

Locked in tests: all 20 worked examples match, male/female probabilities match to nine decimals, and 300 random cases cross-validate against a Python reference within 1e-12. Sample-CSV regeneration is scripted whenever the module changes.

Problem

Even a pure calculator endpoint can leak the probability tables to anyone who observes enough responses.

Solution

Authentication is enforced on the calculator endpoint as well.

Problem

The health plugin forcibly read distance, calories and steps with every session and returned zero records silently when permissions were missing.

Solution

Replaced it with a native channel that reads only what is needed and propagates errors, removing the unnecessary BLE dependency at the same time.

Problem

Partial syncs could overwrite existing records and back-dated entries could be typed from memory.

Solution

Workouts apply only when total duration grows (ignored requests still return 200 + applied:false), daily records accept only today and yesterday, and periods without a checkup are always recorded as 'not examined' so the risk input is complete.

Problem

Adding firebase_messaging bumped core, and auth could no longer find the customAuthDomain symbol — the APK build broke in a way flutter test never catches.

Solution

Pinned a compatible version set and documented the cause and recurrence conditions in pubspec comments.

Problem

Name validation failed mid-composition of Hangul syllables, and splash assets stretched vertically under the Android 12+ spec.

Solution

Validation moved to the 'Next' tap, and a script generates spec-compliant splash images per size.