fix(npm-stats): stop summary cards overcounting co-installed packages

The NPM Stats summary cards (all-time, monthly, weekly, daily) summed
every @tanstack/*start* package mapped to the library. ~9 of those are
transitive deps of a single `@tanstack/react-start` install, so each
install was counted ~9x (weekly showed 148.1M instead of ~16.5M).

Make the cards honor the library's declared `npmPackageNames`, matching
the chart below them:

- NPMSummary uses the shared `recentDownloadsQuery` (which passes
  npmPackageNames) instead of a local copy that dropped it, fixing the
  daily/weekly/monthly cards.
- `rebuildOssStatsCache` now restricts each library's aggregate to its
  declared `npmPackageNames` when present, fixing the all-time card.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: tombeckenham

src/components/npm-stats/NPMSummary.tsx

@@ -1,11 +1,9 @@
 import * as React from 'react'
 import { Suspense } from 'react'
 import { useSuspenseQuery } from '@tanstack/react-query'
-import { queryOptions } from '@tanstack/react-query'
 import { BlankErrorBoundary } from '~/components/BlankErrorBoundary'
-import { ossStatsQuery } from '~/queries/stats'
+import { ossStatsQuery, recentDownloadsQuery } from '~/queries/stats'
 import { useNpmDownloadCounter } from '~/hooks/useNpmDownloadCounter'
-import { fetchRecentDownloadStats } from '~/utils/stats-queries.functions'
 import type { Library } from '~/libraries'
 
 /**
@@ -24,26 +22,6 @@ function formatNumber(num: number): string {
   return num.toLocaleString()
 }
 
-/**
- * Query options for recent download stats
- */
-function recentDownloadsQuery(library: Library) {
-  return queryOptions({
-    queryKey: ['npm-recent-downloads', library.id],
-    queryFn: () =>
-      fetchRecentDownloadStats({
-        data: {
-          library: {
-            id: library.id,
-            repo: library.repo,
-            frameworks: library.frameworks,
-          },
-        },
-      }),
-    staleTime: 5 * 60 * 1000, // 5 minutes
-  })
-}
-
 /**
  * Animated counter component for all-time downloads
  */
@@ -110,7 +88,9 @@ function NPMSummaryContent({ library }: { library: Library }) {
   const { data: ossStats } = useSuspenseQuery(ossStatsQuery({ library }))
 
   // Fetch recent download stats (daily, weekly, monthly)
-  const { data: recentStats } = useSuspenseQuery(recentDownloadsQuery(library))
+  const { data: recentStats } = useSuspenseQuery(
+    recentDownloadsQuery({ library }),
+  )
 
   return (
     <div className="my-6">

src/utils/stats-db.server.ts

@@ -248,6 +248,21 @@ export async function rebuildOssStatsCache(org: string = 'tanstack') {
     { npm: NpmStats; packageCount: number; updatedAt?: Date }
   >()
 
+  // When a library declares explicit npmPackageNames, only those packages
+  // count toward its aggregate. This avoids counting internal sub-packages
+  // (e.g. start-server-core, start-plugin-core) that are co-installed as
+  // dependencies of a single user-facing install and would otherwise inflate
+  // the totals several times over.
+  const explicitPackagesByLibrary = new Map<string, Set<string>>()
+  for (const library of libraries) {
+    if (library.npmPackageNames?.length) {
+      explicitPackagesByLibrary.set(
+        library.id,
+        new Set(library.npmPackageNames),
+      )
+    }
+  }
+
   for (const pkg of packages) {
     if (pkg.downloads === null) {
       continue
@@ -266,6 +281,11 @@ export async function rebuildOssStatsCache(org: string = 'tanstack') {
       continue
     }
 
+    const explicitPackages = explicitPackagesByLibrary.get(pkg.libraryId)
+    if (explicitPackages && !explicitPackages.has(pkg.packageName)) {
+      continue
+    }
+
     const existing = libraryNpmStatsMap.get(pkg.libraryId) ?? {
       npm: { totalDownloads: 0 },
       packageCount: 0,