i18n FR/EN under balance.snapshot.* — page (titles, date label and
immutability notice, total, prefill, save/create/delete buttons),
editor (empty state), line (placeholder + a11y label), delete
(double-confirm modal copy). Five new error codes added to
balance.errors.* (snapshot_date_required, snapshot_date_taken,
snapshot_not_found, snapshot_value_invalid, snapshot_priced_unsupported).
Adds common.back so the SnapshotEditPage back arrow has a localized title.
CHANGELOG entries for #146 under [Unreleased] in both EN and FR.
Refs #146
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
New scoped useReducer hook covering the full single-snapshot lifecycle —
LOAD_FOR_DATE / SET_LINE_VALUE / SAVE / DELETE / PREFILL_FROM_PREVIOUS /
RESET — with the following semantics:
- 'new' mode (?date= absent or no snapshot at that date) creates the row
at save time only, so abandoning the form does not leave an empty
snapshot behind;
- 'edit' mode loads existing lines + prefills the values map;
- prefillFromPrevious copies simple-kind values from the most recent
earlier snapshot (priced branch is a no-op + TODO Issue #140);
- save() flips 'new' -> 'edit' on success and updates the URL ?date=
so refresh keeps the user in edit mode;
- snapshotDate is immutable in edit mode (UI guard, matches spec).
New SnapshotEditPage at /balance/snapshot:
- date picker (native input type=date — matches the AdjustmentForm /
TransactionFilterBar / PeriodSelector pattern, no new dep)
- per-category groups of accounts with one value field each
- prefill button (disabled when no earlier snapshot exists, with
tooltip explaining why)
- delete button with double-confirmation modal that requires retyping
the snapshot date before the destructive action enables.
New SnapshotEditor (groups by category sort_order) and SnapshotLineRow
(simple variant — single value field per account) components.
Route /balance/snapshot wired in App.tsx.
Refs #146
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds the snapshots + lines section of the balance service for Issue #146
(Bilan #1b). Simple-kind only — quantity / unit_price are forced to NULL
both at the SQL CHECK level (already in v9) and at the service level
(`upsertSnapshotLines` validates ahead of time). Priced-kind upsert lands
in #140.
New service exports:
- listSnapshots / getSnapshotByDate / getSnapshotById / getPreviousSnapshot
- createSnapshot (throws snapshot_date_taken when UNIQUE per date violated
so the UI can redirect to edit mode)
- updateSnapshot / deleteSnapshot (cascade lines via FK)
- listLinesBySnapshot / upsertSnapshotLines (rewrite-all strategy)
New BalanceErrorCode entries: snapshot_date_required, snapshot_date_taken,
snapshot_not_found, snapshot_value_invalid, snapshot_priced_unsupported.
New shared types: BalanceSnapshot, BalanceSnapshotLine.
22 new vitest cases cover: invalid-date guards, unique-per-date violation,
simple-kind null invariant on inserts, NaN/Infinity rejection,
clear+rewrite line semantics, getPreviousSnapshot strict-before ordering.
Refs #146
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
