add missing files

frontend/icons/alert-circle.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-alert-circle"><circle cx="12" cy="12" r="10"></circle><line x1="12" y1="8" x2="12" y2="12"></line><line x1="12" y1="16" x2="12.01" y2="16"></line></svg>

frontend/icons/alert-triangle.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-alert-triangle"><path d="M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"></path><line x1="12" y1="9" x2="12" y2="13"></line><line x1="12" y1="17" x2="12.01" y2="17"></line></svg>

frontend/icons/chevron-down.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-chevron-down"><polyline points="6 9 12 15 18 9"></polyline></svg>

frontend/icons/chevron-up.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-chevron-up"><polyline points="18 15 12 9 6 15"></polyline></svg>

frontend/icons/trash-2.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-trash-2"><polyline points="3 6 5 6 21 6"></polyline><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"></path><line x1="10" y1="11" x2="10" y2="17"></line><line x1="14" y1="11" x2="14" y2="17"></line></svg>

frontend/src/lib/format.ts

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+// Format a YYYY-MM-DD (or ISO) string as DDMMYY for user-facing dates.
+export function formatDDMMYY(dateStr: string | undefined): string {
+	if (!dateStr) return '';
+	const d = new Date(dateStr.slice(0, 10) + 'T00:00:00');
+	const day = String(d.getDate()).padStart(2, '0');
+	const mon = String(d.getMonth() + 1).padStart(2, '0');
+	const yr = String(d.getFullYear()).slice(2);
+	return `${day}${mon}${yr}`;
+}
+
+// Human-friendly date for due dates etc: "5 Aug" (adds year when not the
+// current one, e.g. "5 Aug 26"). Better than the compact DDMMYY code.
+export function formatShortDate(dateStr: string | undefined): string {
+	if (!dateStr) return '';
+	const d = new Date(dateStr.slice(0, 10) + 'T00:00:00');
+	if (Number.isNaN(d.getTime())) return '';
+	const mon = d.toLocaleDateString('en-GB', { month: 'short' });
+	const sameYear = d.getFullYear() === new Date().getFullYear();
+	return `${d.getDate()} ${mon}${sameYear ? '' : ' ' + String(d.getFullYear()).slice(2)}`;
+}