Dashboard rows for ipx-web and ipx-directory; Caddy logs requests (#210)

Caddy logs one JSON line a request, filtered: no ?token= in the address and no request
headers, which hold the session cookie and Access's token. Its default log, errors included,
has the same filter, since an error line carries the request too. The directory logs a line a
refresher round, so the dashboard can show its progress.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/directory/src/lib.rs

@@ -183,6 +183,8 @@ pub async fn refresher(dir: Shared) {
                     }
                 }
                 if !due.is_empty() {
+                    // One line a round, for the dashboard's refresher panel (#210); failures have their own.
+                    tracing::info!(checked = due.len(), "feeds checked");
                     continue;
                 }
             }