Header: the GitHub pill shows ThinkWatch Lite, the enterprise repository only on its own pages

src/components/SiteHeader.astro

@@ -1,6 +1,7 @@
 ---
 import { getLang, t, localePath, type Lang } from "~/i18n";
 import { getStarCount, formatStars } from "~/lib/github";
+import { productRepos } from "~/lib/releases.mjs";
 import { findDoc, getProduct } from "~/content/docs/_meta";
 import SearchModal from "./SearchModal.astro";
 import TwMark from "./TwMark.astro";
@@ -20,8 +21,6 @@ const sEn = t("en");
 const sZh = t("zh-CN");
 /** data-localize for a link on a bilingual page: the 404 page's script prefixes /zh-CN for Chinese visitors */
 const localize = (path: string) => (bilingual ? path : undefined);
-const stars = await getStarCount();
-const starLabel = formatStars(stars);
 
 // On the home page anchor links work as in-page jumps; on /docs/* and
 // /changelog they need to navigate back to the home first.
@@ -46,6 +45,15 @@ const currentDocMeta = currentDocSlug
   ? findDoc(currentDocSlug, (docMatch?.[1] as "lite" | "core" | undefined) ?? "thinkwatch")
   : undefined;
 
+// The GitHub pill shows ThinkWatch Lite's repository, except on the enterprise
+// edition's page and its guides (/docs/<slug>), which show the enterprise one.
+const enterprise =
+  /^\/thinkwatch(\/|$)/.test(cleanPath) ||
+  (docMatch !== null && !docMatch[1] && docMatch[2] !== "lite" && docMatch[2] !== "core");
+const starRepo = enterprise ? productRepos.enterprise : productRepos.lite;
+const stars = await getStarCount(starRepo);
+const starLabel = formatStars(stars);
+
 function targetPath(target: Lang): string {
   // The 404 page stands in for every missing path, and /404 itself does not
   // exist: its language choice leads to the home page.
@@ -137,9 +145,10 @@ const zhAttrs = (attrs: Record<string, string>) => (bilingual ? JSON.stringify(a
 
       <!-- GitHub icon + star pill (star count hidden on narrow phones) -->
       <a
-        href="https://github.com/ThinkWatchProject/ThinkWatch"
+        href={`https://github.com/${starRepo}`}
         target="_blank"
         rel="noopener"
+        data-star-repo={starRepo}
         aria-label={`GitHub repository — ${stars ?? 0} stars`}
         class="group flex items-center gap-1.5 text-xs font-medium text-[var(--color-muted)] hover:text-white border border-white/10 hover:border-white/25 rounded-md px-2 sm:pl-2 sm:pr-2.5 h-9 transition-colors"
       >
@@ -311,8 +320,9 @@ const zhAttrs = (attrs: Record<string, string>) => (bilingual ? JSON.stringify(a
   // Fetch live GitHub star count and update the pill
   {
     const el = document.querySelector<HTMLSpanElement>("[data-star-count]");
-    if (el) {
-      fetch("https://api.github.com/repos/ThinkWatchProject/ThinkWatch", {
+    const repo = el?.closest<HTMLAnchorElement>("[data-star-repo]")?.dataset.starRepo;
+    if (el && repo) {
+      fetch(`https://api.github.com/repos/${repo}`, {
         headers: { Accept: "application/vnd.github+json" },
       })
         .then((r) => r.ok ? r.json() : null)

src/lib/github.ts

@@ -9,23 +9,25 @@ export type { Product, Release };
 
 const REPO = productRepos.enterprise;
 
-let cached: number | null | undefined;
+const starCache = new Map<string, Promise<number | null>>();
 
-export async function getStarCount(): Promise<number | null> {
-  if (cached !== undefined) return cached;
-  try {
-    const res = await fetch(`https://api.github.com/repos/${REPO}`, { headers: githubHeaders() });
-    if (!res.ok) {
-      cached = null;
-      return null;
-    }
-    const data: { stargazers_count?: number } = await res.json();
-    cached = typeof data.stargazers_count === "number" ? data.stargazers_count : null;
-    return cached;
-  } catch {
-    cached = null;
-    return null;
+/** A repository's star count, fetched once per build and repository. */
+export function getStarCount(repo: string): Promise<number | null> {
+  let cached = starCache.get(repo);
+  if (!cached) {
+    cached = (async () => {
+      try {
+        const res = await fetch(`https://api.github.com/repos/${repo}`, { headers: githubHeaders() });
+        if (!res.ok) return null;
+        const data: { stargazers_count?: number } = await res.json();
+        return typeof data.stargazers_count === "number" ? data.stargazers_count : null;
+      } catch {
+        return null;
+      }
+    })();
+    starCache.set(repo, cached);
   }
+  return cached;
 }
 
 export function formatStars(n: number | null): string {