Toggle via Moon/Sun button in sidebar. Persists to localStorage with
prefers-color-scheme fallback. Fixes hardcoded colors (error banners,
badges, chart tooltips, Settings text) to use CSS variables.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Budget: monthly data grid with inline-editable planned amounts per
category, actuals from transactions, difference coloring, month
navigation, and save/apply/delete budget templates.
Adjustments: split-panel CRUD for manual adjustment entries.
Both features include FR/EN translations and follow existing
service/hook/component patterns.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Each page now shows a ? icon next to its title that toggles a collapsible
help card with page-specific tips. Supports EN/FR via i18n, closes on
outside click or X button.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
