Beta 4 of Flujo is up. The biggest one yet, split into two parts
because of the autoescritor’s 10 hour session limit.

Beta 4a added the settings panel with dark mode and language toggle
(ES/EN). The dark mode uses a warm dark brown palette instead of the
usual cold gray, so it still feels editorial. The language toggle
reloads the page to re-translate static text.

Beta 4b added the debts and shared expenses system. You can add people
(flatmates, friends) and track who owes whom. Shared expenses support
four split methods: equal, by shares (e.g. 2:1:1 means one person pays
double), exact amounts per person, and by percentage. The settle-up
section uses a greedy algorithm to minimize the number of transfers
needed to clear all debts, so if three people owe each other small
amounts, it suggests the minimum set of transfers instead of everyone
paying everyone.

Also added pattern detection. The app analyzes your expenses and finds
recurring ones, things you pay the same amount for multiple times. It
separates them into likely subscriptions (same exact amount, repeated)
and general recurring expenses (same description, similar amounts). Shows
the projected annual cost for subscriptions, which is a sobering number
to see.

Next version will be the last: FastAPI backend for sync between phone
and laptop, plus PWA installable.