Align batch sync semantics with review feedback

Author: ChristianPavilonis

crates/trusted-server-adapter-fastly/src/main.rs

@@ -89,6 +89,21 @@ async fn route_request(
     // Extract geo info before auth check or routing consumes the request.
     let geo_info = GeoInfo::from_request(&req);
 
+    // S2S batch sync — uses Bearer auth (not EC cookies), so skip EC
+    // context creation and the EC finalize middleware entirely.
+    if req.get_method() == Method::POST && req.get_path() == "/api/v1/sync" {
+        let mut response = require_identity_graph(settings)
+            .and_then(|kv| {
+                require_partner_store(settings).and_then(|partner_store| {
+                    let limiter = FastlyRateLimiter::new(RATE_COUNTER_NAME);
+                    handle_batch_sync(&kv, &partner_store, &limiter, req)
+                })
+            })
+            .unwrap_or_else(|e| to_error_response(&e));
+        finalize_response(settings, geo_info.as_ref(), &mut response);
+        return Ok(response);
+    }
+
     let mut ec_context =
         match EcContext::read_from_request_with_geo(settings, &req, geo_info.as_ref()) {
             Ok(context) => context,
@@ -118,21 +133,6 @@ async fn route_request(
     let method = req.get_method().clone();
 
     // Match known routes and handle them
-    // S2S batch sync — uses Bearer auth (not EC cookies), so skip the
-    // EC finalize middleware and return directly.
-    if method == Method::POST && path == "/api/v1/sync" {
-        let mut response = require_identity_graph(settings)
-            .and_then(|kv| {
-                require_partner_store(settings).and_then(|partner_store| {
-                    let limiter = FastlyRateLimiter::new(RATE_COUNTER_NAME);
-                    handle_batch_sync(&kv, &partner_store, &limiter, req)
-                })
-            })
-            .unwrap_or_else(|e| to_error_response(&e));
-        finalize_response(settings, geo_info.as_ref(), &mut response);
-        return Ok(response);
-    }
-
     let result = match (method, path.as_str()) {
         // Serve the tsjs library
         (Method::GET, path) if path.starts_with("/static/tsjs=") => {