Log route count on boot and no-match on route attempts

Shows "pages: N routes loaded" at startup and
"sx:route no match (N routes) /path" when no route matches,
so we can see if routes loaded and why matching fails.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

shared/sx/ref/boot.sx

@@ -319,7 +319,8 @@
                         (merge page
                           {"parsed" (parse-route-pattern (get page "path"))})))
                     pages))))))
-        scripts))))
+        scripts)
+      (log-info (str "pages: " (len _page-routes) " routes loaded")))))
 
 
 ;; --------------------------------------------------------------------------

shared/sx/ref/orchestration.sx

@@ -543,7 +543,7 @@
     ;; Only works for pages without :data dependencies.
     (let ((match (find-matching-route pathname _page-routes)))
       (if (nil? match)
-        false
+        (do (log-info (str "sx:route no match (" (len _page-routes) " routes) " pathname)) false)
         (if (get match "has-data")
           (do (log-info (str "sx:route server (has data) " pathname)) false)
           (let ((content-src (get match "content"))