siddharthd
cb7665ded1
ci / lint-test (push) Successful in 52s
Trips were scoped to trips.owner_id, so Sonu saw no trips at all — despite having paid for 104 of the tagged rows herself. Her own spending was invisible on the only page organised around it. A participant is now anyone with a split on, who paid for, or whose payment is scoped to, a transaction tagged to the trip. Derived, not stored. A trip_participants table was designed and rejected: the expenses already carry the fact, and two records of one fact drift apart. Deriving it also excludes Singapore + Bangkok 2026 from Sonu for free, which a table would have to be kept in sync to do. Siddharth 4 trips, Sonu 3, Molina 1. Everything about a trip is shared except delete. Both trip foreign keys are ON DELETE SET NULL, so deleting Europe 2026 untags 210 transactions and NULLs the trip scope on 6 payments — where the hand-derived Europe-first allocation lives, which nothing recomputes. That stays with the owner. Trip owed now returns both directions and nets neither. An obligation lives on a row someone else paid for, so a viewer-as-payer figure can never hold it, and Sonu's Europe read "you are owed $2,408.24" while omitting the $8,004.04 she owed. Collapsing the two into a signed net is the tempting next step and would have corrupted the scope allocation: the grouped-payment allocation cleared each trip against the one-directional gross, so redefining the debt afterwards turns $8,004.04 already allocated into an $802.75 over-allocation with household understated by the same amount. Verified byte-identical — Auckland $1,505.64, Europe Molina -$816.16, Europe Sonu $0.00, Sonu + Sunny $0.00. getTransactions gained trip_all_rows so a participant sees the whole trip. It is opt-in and not implied by trip_id, because the same endpoint backs the main transactions list and its trip filter must keep owner scoping. Participation is re-checked in SQL, so passing the flag for someone else's trip returns nothing. Payments can finally say what they settle. trip_id has existed since migration 0022 but POST never read it and GET never returned it, so every payment made in the app landed on household and the 9 trip-scoped rows were hand-written SQL. "Both" needs no new shape — one row per scope sharing a linked_transaction_id. Three write paths had no authorisation at all and were reachable by any participant: assignTransactionsToTrip checked nothing, DELETE on a payment deleted by bare id, and POST accepted any from/to pair. All three now check. Also fixes the test suite, which was pointing at postgres-pantry: container IPs move on recreation and 172.22.0.47 stopped being postgres-personal. It only failed safe because the credentials did not match — resetDB now refuses to truncate anything not named personal_test. 22 new tests, 276 passing, build clean.