fix slot

Author: sekuba

src/components/EventHistory.test.tsx

@@ -120,10 +120,47 @@ describe('Pingme journal cards', () => {
 
         expect(markup).toContain('Node · pending');
         expect(markup).toContain('Expected vote round 210');
+        expect(markup).toContain('Epoch starts at slot 26688');
         expect(markup).not.toContain('Pending Offense Detected');
         expect(markup).not.toContain('aztec_node');
     });
 
+    it('labels a precursor duty miss as the first missed slot', () => {
+        vi.stubGlobal('window', { location: new URL('https://slashmon.example/?view=pingme') });
+        const event: MonitorEvent = {
+            id: 'event-precursor',
+            network: 'mainnet',
+            type: 'inactivity_first_miss',
+            source: 'aztec_sentinel',
+            certainty: 'pending',
+            sequencer: targets[0],
+            targets: [targets[0]],
+            title: 'First missed duty observed',
+            body: 'This is precursor evidence, not a registered slash offense.',
+            offense: {
+                type: null,
+                reason: 'inactivity precursor',
+                epochOrSlot: '834',
+                timeUnit: 'epoch',
+                amount: null,
+                epoch: '834',
+                slot: '26690',
+                offenseRound: null,
+                proposalRound: null,
+            },
+            nodeEvidence: [],
+            l1: null,
+            occurredAt: '2026-07-22T13:34:33.502Z',
+        };
+
+        const markup = renderToStaticMarkup(
+            <EventHistory events={[event]} hasWatchlistCapability={false} />,
+        );
+
+        expect(markup).toContain('First missed slot 26690');
+        expect(markup).not.toContain('Epoch starts at slot 26690');
+    });
+
     it('falls back to an explicit UTC timestamp when local formatting is unavailable', () => {
         vi.spyOn(Date.prototype, 'toLocaleString').mockImplementation(() => {
             throw new RangeError('locale unavailable');

src/components/EventHistory.tsx

@@ -202,7 +202,14 @@ function EventFacts({ event }: { event: MonitorEvent }) {
         const offense = event.offense;
         facts.push(`Reason: ${humanize(offense.reason)}${offense.type !== null ? ` (#${offense.type})` : ''}`);
         if (offense.epoch) facts.push(`Epoch ${offense.epoch}`);
-        if (offense.slot) facts.push(`${offense.timeUnit === 'epoch' ? 'Epoch starts at slot' : 'Slot'} ${offense.slot}`);
+        if (offense.slot) {
+            const slotLabel = event.type === 'inactivity_first_miss'
+                ? 'First missed slot'
+                : offense.timeUnit === 'epoch'
+                    ? 'Epoch starts at slot'
+                    : 'Slot';
+            facts.push(`${slotLabel} ${offense.slot}`);
+        }
         if (!offense.epoch && offense.epochOrSlot) {
             facts.push(`${humanize(offense.timeUnit ?? 'position')} ${offense.epochOrSlot}`);
         }