web-next: paginar /changelogs (10 por página + navegación)

getCommits ahora recibe page/limit y devuelve {commits, totalPages} (del
header X-PageCount de Gitea). La página lee ?page, muestra 10 commits y usa
el componente Pagination (Anterior/1 2 3…/Siguiente).

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

web-next/lib/changelog.ts

@@ -20,16 +20,17 @@ interface GiteaCommit {
   author?: { login?: string } | null
 }
 
-export async function getCommits(limit = 50): Promise<Commit[]> {
+export async function getCommits(page = 1, limit = 10): Promise<{ commits: Commit[]; totalPages: number }> {
   try {
-    const res = await fetch(`${GITEA}/api/v1/repos/${REPO}/commits?limit=${limit}`, {
+    const res = await fetch(`${GITEA}/api/v1/repos/${REPO}/commits?page=${page}&limit=${limit}`, {
       headers: { Accept: 'application/json' },
       // Cache corto para no golpear Gitea en cada visita.
       next: { revalidate: 300 },
     })
-    if (!res.ok) return []
+    if (!res.ok) return { commits: [], totalPages: 1 }
+    const totalPages = Math.max(1, Number(res.headers.get('x-pagecount') || '1'))
     const data = (await res.json()) as GiteaCommit[]
-    return data.map((c) => {
+    const commits = data.map((c) => {
       const msg = c.commit?.message ?? ''
       const lines = msg.split('\n')
       const title = lines[0].trim()
@@ -49,7 +50,8 @@ export async function getCommits(limit = 50): Promise<Commit[]> {
         url: c.html_url,
       }
     })
+    return { commits, totalPages }
   } catch {
-    return []
+    return { commits: [], totalPages: 1 }
   }
 }