fix(watchlist): prevent phantom miners from leaking into watchlist via /miners/details with an unknown id

src/pages/MinerDetailsPage.tsx

@@ -15,6 +15,7 @@ import {
   SEO,
 } from '../components';
 import { WatchlistButton } from '../components/common';
+import { useMinerStats } from '../api';
 
 type ViewMode = 'prs' | 'issues';
 
@@ -84,6 +85,13 @@ const MinerDetailsPage: React.FC = () => {
     setSearchParams(p, { replace: true });
   };
 
+  const { data: minerStats, isLoading: isLoadingMinerStats } = useMinerStats(
+    githubId ?? '',
+  );
+  // Only show the star once we've confirmed the miner exists — otherwise
+  // users can pin phantom entries via /miners/details?githubId=<anything>.
+  const minerExists = !isLoadingMinerStats && !!minerStats;
+
   if (!githubId) {
     return <Navigate to="/top-miners" replace />;
   }
@@ -131,11 +139,13 @@ const MinerDetailsPage: React.FC = () => {
               }}
             >
               <BackButton to="/top-miners" mb={0} />
-              <WatchlistButton
-                category="miners"
-                itemKey={githubId}
-                size="medium"
-              />
+              {minerExists && (
+                <WatchlistButton
+                  category="miners"
+                  itemKey={githubId}
+                  size="medium"
+                />
+              )}
             </Box>
             <Box
               sx={{

src/pages/WatchlistPage.tsx

@@ -919,6 +919,7 @@ const WatchlistOptionsButton: React.FC<WatchlistOptionsButtonProps> = ({
 
 const MinersList: React.FC<{ itemKeys: string[] }> = ({ itemKeys }) => {
   const { data: allMinersStats, isLoading } = useAllMiners();
+  const { remove } = useWatchlist('miners');
   const watchedSet = useMemo(() => new Set(itemKeys), [itemKeys]);
 
   const minerStats = useMemo(() => {
@@ -933,8 +934,50 @@ const MinersList: React.FC<{ itemKeys: string[] }> = ({ itemKeys }) => {
       }));
   }, [allMinersStats, watchedSet]);
 
+  const unresolvedIds = useMemo(() => {
+    if (isLoading || !allMinersStats) return [];
+    const known = new Set(allMinersStats.map((m) => m.githubId));
+    return itemKeys.filter((id) => !known.has(id));
+  }, [allMinersStats, isLoading, itemKeys]);
+
+  const handleRemoveUnresolved = useCallback(() => {
+    unresolvedIds.forEach((id) => remove(id));
+  }, [unresolvedIds, remove]);
+
   return (
-    <Box sx={{ width: '100%' }}>
+    <Box
+      sx={{ width: '100%', display: 'flex', flexDirection: 'column', gap: 2 }}
+    >
+      {unresolvedIds.length > 0 && (
+        <Card
+          sx={(theme) => ({
+            p: 1.5,
+            display: 'flex',
+            alignItems: { xs: 'flex-start', sm: 'center' },
+            justifyContent: 'space-between',
+            gap: 1.5,
+            flexDirection: { xs: 'column', sm: 'row' },
+            backgroundColor: alpha(theme.palette.status.warningOrange, 0.08),
+            border: `1px solid ${alpha(theme.palette.status.warningOrange, 0.3)}`,
+          })}
+          elevation={0}
+        >
+          <Typography sx={{ fontSize: '0.85rem', color: 'text.secondary' }}>
+            {unresolvedIds.length} watched{' '}
+            {unresolvedIds.length === 1 ? 'miner' : 'miners'} could not be
+            loaded (the account may not be tracked by Gittensor).
+          </Typography>
+          <Button
+            size="small"
+            variant="outlined"
+            color="warning"
+            onClick={handleRemoveUnresolved}
+            sx={{ textTransform: 'none', flexShrink: 0 }}
+          >
+            Remove unresolved
+          </Button>
+        </Card>
+      )}
       <TopMinersTable
         miners={minerStats}
         isLoading={isLoading}