perf: set docs cache headers

.github/workflows/pages.yml

@@ -7,10 +7,13 @@ on:
     paths:
       - "docs/**"
       - "scripts/docs-site/**"
+      - "workers/**"
       - "package.json"
       - "package-lock.json"
       - ".github/workflows/pages.yml"
+      - "wrangler.toml"
       - "README.md"
+      - "CLOUDFLARE.md"
   workflow_dispatch:
 
 permissions:

CLOUDFLARE.md

@@ -33,6 +33,7 @@ Production is still on the safe Worker Static Assets fallback until the Cloudfla
 - Route: `documentation.openclaw.ai/*`
 - Static assets binding: `env.ASSETS`
 - Header: `X-OpenClaw-Docs-Origin: cloudflare-static-assets`
+- Cache-Control follows the same policy as the R2 manifest.
 
 The fallback exists because the Services@openclaw.org Cloudflare token currently cannot access R2. Local verification against account `91b59577e757131d68d55a471fe32aca` fails before bucket operations with Cloudflare API auth error `10000`.
 
@@ -170,6 +171,7 @@ Expected before R2 cutover:
 
 - the same URLs work through the Worker Static Assets fallback.
 - docs responses include `X-OpenClaw-Docs-Origin: cloudflare-static-assets`.
+- repeated requests should show Cloudflare `cf-cache-status: HIT`.
 
 ## Rollback
 

workers/docs-router.ts

@@ -87,6 +87,7 @@ async function assetResponse(env: Env, request: Request, pathname: string): Prom
   }));
   const responseHeaders = new Headers(response.headers);
   responseHeaders.set("X-OpenClaw-Docs-Origin", "cloudflare-static-assets");
+  if (response.ok) responseHeaders.set("Cache-Control", cacheControlFor(pathname));
   return new Response(request.method === "HEAD" ? null : response.body, {
     status: response.status,
     statusText: response.statusText,
@@ -94,6 +95,16 @@ async function assetResponse(env: Env, request: Request, pathname: string): Prom
   });
 }
 
+function cacheControlFor(pathname: string): string {
+  if (pathname.endsWith(".html")) {
+    return "public, max-age=60, s-maxage=86400, stale-while-revalidate=604800";
+  }
+  if (pathname.endsWith(".md") || pathname.endsWith(".txt") || pathname.endsWith(".json") || pathname.endsWith(".jsonl")) {
+    return "public, max-age=300, s-maxage=3600, stale-while-revalidate=86400";
+  }
+  return "public, max-age=31536000, immutable";
+}
+
 function appendVary(current: string | null, value: string): string {
   const parts = new Set((current ?? "").split(",").map((part) => part.trim()).filter(Boolean));
   parts.add(value);