Added support for Streamdeck Pedal and updated UI to better fit the Packed UI style

pirp/tools/migrate_unique_constraints.sql

@@ -0,0 +1,19 @@
+-- Migration: Unique-Constraints für Journal-Einträge
+-- Verhindert Doppelbuchungen (max. 1 Journal-Eintrag pro Rechnung/Ausgabe)
+
+-- Zuerst evtl. vorhandene Duplikate bereinigen (behalte nur den neuesten)
+DELETE FROM journal_entries a
+USING journal_entries b
+WHERE a.invoice_id IS NOT NULL
+  AND a.invoice_id = b.invoice_id
+  AND a.id < b.id;
+
+DELETE FROM journal_entries a
+USING journal_entries b
+WHERE a.expense_id IS NOT NULL
+  AND a.expense_id = b.expense_id
+  AND a.id < b.id;
+
+-- Unique-Indexes erstellen
+CREATE UNIQUE INDEX IF NOT EXISTS idx_unique_journal_invoice ON journal_entries(invoice_id) WHERE invoice_id IS NOT NULL;
+CREATE UNIQUE INDEX IF NOT EXISTS idx_unique_journal_expense ON journal_entries(expense_id) WHERE expense_id IS NOT NULL;