feat: map shapes, image persistence, grab tool, layer rename/delete, i18n, page metadata

supabase/migrations/035_budget_receipts.sql

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+-- Add receipt/invoice document linking to budget items
+-- Each budget item can optionally link to a document (uploaded file) as its receipt/invoice
+
+ALTER TABLE budget_items
+  ADD COLUMN receipt_document_id UUID REFERENCES documents(id) ON DELETE SET NULL;
+
+CREATE INDEX idx_budget_items_receipt ON budget_items(receipt_document_id);