Keep OPML feeds out of config, cap downloads, log daemon work

Writing 82 derived feeds into a hand-edited config.toml made it
unreadable. The OPML is the source of truth, so its feeds are re-derived
each scan and held in the database, inheriting the subscription's
settings; editing one promotes it to a real entry. A migration moves
existing children out -- 611 lines to 38 -- keeping all entries and files.

max_new_per_check defaulted to unlimited, so subscribing to an OPML of 82
feeds pulled whole back catalogues. It now defaults to 3 via [general],
capping every feed that does not set its own, and the pending queue orders
by publish date so a cap of 3 means the three newest.

Scans and downloads travelled as socket events only, so the log view
showed no daemon activity. They are mirrored into tracing, with routine
skips at debug -- at 82 feeds those alone would flush the buffer.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AdXho5tTkjFLeUXKbEjKBh

src/ipc.rs

@@ -73,9 +73,9 @@ impl Event {
             }
             Event::Error { msg } => format!("error: {msg}"),
             // Noise in a terminal; a UI still gets them on the socket.
-            Event::FeedStart { .. } | Event::TorrentDeferred { .. } | Event::ScanDone { .. } => {
-                return None;
-            }
+            Event::FeedStart { feed } => format!("{feed}: checking"),
+            Event::TorrentDeferred { feed, .. } => format!("{feed}: torrent deferred"),
+            Event::ScanDone { feeds } => format!("scan complete, {feeds} feed(s)"),
         })
     }
 }
@@ -119,6 +119,35 @@ impl Emitter {
     }
 
     pub fn emit(&self, e: Event) {
+        // Also log it. Scans and downloads travel as events, not tracing calls, so
+        // without this the log view shows only startup and HTTP lines and none of the
+        // work the daemon is actually doing. Progress goes to debug: it fires on every
+        // whole percent and would otherwise crowd everything else out of the buffer.
+        // Level by how much it matters. With 80-odd feeds in an OPML subscription, one
+        // line per feed per tick for "not due yet" would push everything worth reading
+        // out of the buffer within a few minutes.
+        let routine = match &e {
+            Event::Progress { .. } | Event::FeedSkip { .. } | Event::FeedStart { .. } => true,
+            Event::FeedDone { new, downloaded, failed, torrents, .. } => {
+                *new == 0 && *downloaded == 0 && *failed == 0 && *torrents == 0
+            }
+            _ => false,
+        };
+        let bad = matches!(
+            &e,
+            Event::FeedError { .. } | Event::DownloadError { .. } | Event::Error { .. }
+        );
+        if let Some(line) = e.human() {
+            let line = line.trim();
+            if bad {
+                tracing::warn!(target: "ipx::scan", "{line}");
+            } else if routine {
+                tracing::debug!(target: "ipx::scan", "{line}");
+            } else {
+                tracing::info!(target: "ipx::scan", "{line}");
+            }
+        }
+
         if let Some(tx) = &self.tx {
             // An error here only means nobody is listening yet.
             let _ = tx.send(e.clone());