fix(web): resolve practice/qualifying partial session bug by flagging starting_grid as N/A

frontend/src/components/DatasetStatusView.tsx

@@ -70,6 +70,8 @@ export function DatasetStatusView({ datasets }: Props) {
               <td>
                 {info?.status === 'available' ? (
                   <span className="badge badge-local">Local</span>
+                ) : info?.status === 'skipped' ? (
+                  <span className="badge badge-none">N/A</span>
                 ) : (
                   <span className="badge badge-none">Missing</span>
                 )}

frontend/src/components/DatasetStrip.tsx

@@ -19,9 +19,9 @@ export function DatasetStrip({ datasets }: Props) {
     <div className="dataset-strip">
       {keys.map((key) => {
         const info = datasets[key]
-        const available = info?.status === 'available'
+        const available = info?.status === 'available' || info?.status === 'skipped'
         return (
-          <div key={key} className="ds-item" title={info ? `${info.source} · ${info.count ?? 0} rows` : 'missing'}>
+          <div key={key} className="ds-item" title={info ? `${info.status === 'skipped' ? 'N/A' : info.source} · ${info.count ?? 0} rows` : 'missing'}>
             <div className={`ds-dot ${available ? 'ds-dot-local' : 'ds-dot-missing'}`} />
             <span>{DATASET_LABELS[key]}</span>
             {available && info.count != null && info.count > 0 && (

frontend/src/components/MeetingDetailPanel.tsx

@@ -82,9 +82,11 @@ function SessionDetailBlock({ entry }: { entry: WeekendSession }) {
                 <td className="mono" style={{ color: 'var(--text-2)' }}>
                   {key}
                 </td>
-                <td>
-                  {available ? (
+                 <td>
+                  {info?.status === 'available' ? (
                     <span className="badge badge-local">Local</span>
+                  ) : info?.status === 'skipped' ? (
+                    <span className="badge badge-none">N/A</span>
                   ) : (
                     <span className="badge badge-none">Missing</span>
                   )}

frontend/src/components/SessionCoverageDots.tsx

@@ -9,7 +9,7 @@ export function SessionCoverageDots({ datasets }: Props) {
   return (
     <span className="coverage-dots" aria-hidden="true">
       {RACE_HUB_DATASETS.map((key) => {
-        const available = datasets[key]?.status === 'available'
+        const available = datasets[key]?.status === 'available' || datasets[key]?.status === 'skipped'
         return <span key={key} className={`coverage-dot ${available ? 'on' : 'off'}`} />
       })}
     </span>

frontend/src/lib/coverage.ts

@@ -18,7 +18,10 @@ export type RaceHubDatasetKey = (typeof RACE_HUB_DATASETS)[number]
 
 export function countRaceHubDatasets(datasets: Record<string, DatasetInfo>): { available: number; total: number } {
   const total = RACE_HUB_DATASETS.length
-  const available = RACE_HUB_DATASETS.filter((key) => datasets[key]?.status === 'available').length
+  const available = RACE_HUB_DATASETS.filter((key) => {
+    const status = datasets[key]?.status
+    return status === 'available' || status === 'skipped'
+  }).length
   return { available, total }
 }
 

frontend/src/types.ts

@@ -1,6 +1,6 @@
 export interface DatasetInfo {
-  status: 'available' | 'missing'
-  source: 'local' | 'openf1' | 'none'
+  status: 'available' | 'missing' | 'skipped'
+  source: 'local' | 'openf1' | 'none' | 'na'
   count?: number
 }
 

internal/query/metadata.go

@@ -1,5 +1,7 @@
 package query
 
+import "strings"
+
 const (
 	DatasetStatusAvailable = "available"
 	DatasetStatusMissing   = "missing"
@@ -20,6 +22,25 @@ type DatasetInfo struct {
 	Count  int    `json:"count,omitempty"`
 }
 
+func skippedNA() DatasetInfo {
+	return DatasetInfo{
+		Status: "skipped",
+		Source: "na",
+		Count:  0,
+	}
+}
+
+func isGridExpected(sessionType, sessionName string) bool {
+	t := strings.ToLower(sessionType)
+	n := strings.ToLower(sessionName)
+	// Grid is only expected on main Sprint or Race sessions, not qualifying, practice, or shootout
+	return (strings.Contains(t, "race") || strings.Contains(n, "race") ||
+		strings.Contains(t, "sprint") || strings.Contains(n, "sprint")) &&
+		!strings.Contains(t, "qualifying") && !strings.Contains(n, "qualifying") &&
+		!strings.Contains(t, "shootout") && !strings.Contains(n, "shootout") &&
+		!strings.Contains(t, "practice") && !strings.Contains(n, "practice")
+}
+
 func availableLocal(count int) DatasetInfo {
 	return DatasetInfo{
 		Status: DatasetStatusAvailable,

internal/query/navigation.go

@@ -64,8 +64,12 @@ func (s *Service) GetWeekend(meetingKey int) (Weekend, error) {
 			return Weekend{}, err
 		}
 		datasets := datasetsFromCounts(true, true, counts)
+		sessionModel := sessionToModel(sess)
+		if datasets["starting_grid"].Status == DatasetStatusMissing && !isGridExpected(sessionModel.SessionType, sessionModel.SessionName) {
+			datasets["starting_grid"] = skippedNA()
+		}
 		out.Sessions = append(out.Sessions, WeekendSession{
-			Session:  sessionToModel(sess),
+			Session:  sessionModel,
 			Source:   responseSource(datasets),
 			Datasets: datasets,
 		})

internal/query/racehub.go

@@ -166,6 +166,8 @@ func (s *Service) GetRaceHub(sessionKey int) (RaceHub, error) {
 		}
 		hub.StartingGrid = enriched
 		hub.Datasets["starting_grid"] = availableLocal(len(enriched))
+	} else if !isGridExpected(sessionModel.SessionType, sessionModel.SessionName) {
+		hub.Datasets["starting_grid"] = skippedNA()
 	}
 
 	stints, err := s.store.ListStints(sessionKey)