perf: increase ISR revalidation intervals for package and API routes

Current 60s ISR triggers background revalidation every minute for
active URLs. Server-side data caches (package-meta: 300s, downloads:
3600s, files: 1y) outlive this — most revalidations produce identical
HTML and the ISR write is skipped, but the function still executes.

Align page ISR (300s) with the fastest handler cache to eliminate
redundant revalidation invocations. OG images increased to 3600s
(stable per package version). API catch-all increased to 300s
(explicit overrides are unaffected).

Expected impact: ~80% fewer time-based revalidations, ~25-30%
compute reduction.

Author: JohnPhamous

nuxt.config.ts

@@ -99,7 +99,7 @@ export default defineNuxtConfig({
 
   routeRules: {
     // API routes
-    '/api/**': { isr: 60 },
+    '/api/**': { isr: 300 },
     '/api/registry/badge/**': {
       isr: {
         expiration: 60 * 60 /* one hour */,
@@ -128,7 +128,7 @@ export default defineNuxtConfig({
     '/api/registry/package-meta/**': { isr: 300 },
     '/:pkg/.well-known/skills/**': { isr: 3600 },
     '/:scope/:pkg/.well-known/skills/**': { isr: 3600 },
-    '/__og-image__/**': getISRConfig(60),
+    '/__og-image__/**': getISRConfig(3600),
     '/_avatar/**': { isr: 3600, proxy: 'https://www.gravatar.com/avatar/**' },
     '/opensearch.xml': { isr: true },
     '/oauth-client-metadata.json': { prerender: true },
@@ -161,11 +161,11 @@ export default defineNuxtConfig({
       },
     },
     // pages
-    '/package/**': getISRConfig(60, { fallback: 'html' }),
-    '/package/:name/_payload.json': getISRConfig(60, { fallback: 'json' }),
-    '/package/:name/v/:version/_payload.json': getISRConfig(60, { fallback: 'json' }),
-    '/package/:org/:name/_payload.json': getISRConfig(60, { fallback: 'json' }),
-    '/package/:org/:name/v/:version/_payload.json': getISRConfig(60, { fallback: 'json' }),
+    '/package/**': getISRConfig(300, { fallback: 'html' }),
+    '/package/:name/_payload.json': getISRConfig(300, { fallback: 'json' }),
+    '/package/:name/v/:version/_payload.json': getISRConfig(300, { fallback: 'json' }),
+    '/package/:org/:name/_payload.json': getISRConfig(300, { fallback: 'json' }),
+    '/package/:org/:name/v/:version/_payload.json': getISRConfig(300, { fallback: 'json' }),
     // infinite cache (versioned - doesn't change)
     '/package-code/**': { isr: true, cache: { maxAge: 365 * 24 * 60 * 60 } },
     '/package-docs/**': { isr: true, cache: { maxAge: 365 * 24 * 60 * 60 } },