feat(time): add span-based attendance tracking under 2.0

frontend/utils/staffTimeSpans.ts

@@ -0,0 +1,32 @@
+/** Collapse legacy-compatible work segments into complete persisted attendances for widgets. */
+export function staffTimeRows(spans: any[], userId: string, now = Date.now()) {
+    const seen = new Set<string>();
+    return (spans || []).filter(span => {
+        if (span.model !== 'spans-v2') return true;
+        if (seen.has(span.id)) return false;
+        seen.add(span.id);
+        return true;
+    }).map(span => {
+        const s = span.attendance;
+        if (s) {
+            const entry = {
+                id: s.id, eventIds: [s.id], state: s.status, started_at: s.started_at,
+                stopped_at: s.ended_at, user_id: s.user_id, type: s.type, description: s.description,
+                breaks: s.breaks, paused: s.breaks.some((p: any) => !p.ended_at), model: 'spans-v2',
+            };
+            return { ...entry, duration_minutes: workingMinutes(entry, now) };
+        }
+        return {
+            id: span.sourceEventIds?.[0] || null, eventIds: span.sourceEventIds || [], state: span.status,
+            started_at: span.startedAt, stopped_at: span.endedAt, user_id: userId, type: span.type,
+            description: span.description || span.payload?.description || '',
+            duration_minutes: Math.floor(((span.endedAt ? Date.parse(span.endedAt) : now) - Date.parse(span.startedAt)) / 60000),
+        };
+    }).sort((a, b) => Date.parse(b.started_at) - Date.parse(a.started_at));
+}
+export function workingMinutes(entry: any, now = Date.now()) {
+    if (!entry.started_at) return 0;
+    const end = entry.stopped_at ? Date.parse(entry.stopped_at) : now;
+    const pauses = (entry.breaks || []).reduce((total: number, p: any) => total + ((p.ended_at ? Date.parse(p.ended_at) : end) - Date.parse(p.started_at)), 0);
+    return Math.max(0, Math.floor((end - Date.parse(entry.started_at) - pauses) / 60000));
+}