fix: rename St-Hyacinthe to Saint-Hyacinthe

feat: add St-Hyacinthe branch with sthy.finances@iccameriques.org

fix: restore envelope number in export, remove accents from branches

fix: remove "ICC " prefix from all branch/succursale names

Rename branch Gatineau-Ottawa to Gatineau

Fix CSV parsing to use header-based column detection for envelope sync

Update Google Sheets envelope source to new spreadsheet

Fix foreign key constraint error by removing FK enforcement

Replace local CSV with live Google Sheets fetch for envelope data

Add envelope number column with contact lookup, clean summary cards

Fix branch list to only the 20 accurate ICC branches

Seed 48 ICC branch mappings into database on startup

Wire Settings page to real data with working buttons

Auto-create all SQLite tables on startup if they don't exist

feat: add Excel export, filters, search, match accuracy, journal page, and email viewer improvements

Initial commit — ICC Interac Manager full-stack app