refactor: migrate thread/async/queue/scheduler infra to mytheclipse

- bootstrap: TracingLayer from mytheclipse-tracing (composed with scraper
  env filter), RuntimeConfig::auto() thread logging, init job queue + cron.
- proxy_fetch: leader task via ::mytheclipse::spawn_io, gzip decompression
  offloaded to ::mytheclipse::compute (sized rayon pool, panic-isolated),
  bounded by new async fetch limiter (tokio Semaphore bridge).
- queue: new infrastructure/queue module over mytheclipse-queue
  (InMemoryQueue + WorkerPool + BackpressureEnforcer) for repair jobs.
- scheduler: new infrastructure/scheduler.rs using mytheclipse::cron for
  the daily 02:00 UTC image-cache cleanup.
- deps: add mytheclipse-queue + mytheclipse-tracing path deps; mytheclipse
  -> full feature; rayon 1.12; keep path deps for unpublished crates.
- tests: infra_round2 runtime smoke tests (compute panic isolation,
  spawn_io, backpressure admission, cron parse, queue roundtrip).
- Fix: local cache::mytheclipse bridge module shadowed the mytheclipse
  crate name; use leading :: at spawn_io/compute call sites.

src/application/anime2/use_cases.rs

@@ -296,19 +296,18 @@ impl Anime2UseCases {
                         .map(|ep| ep.url.clone())
                         .collect();
 
-                    let results: Vec<_> = futures::future::join_all(latest.iter().map(|url| {
-                        self.repository.fetch_html(url)
-                    }))
+                    let results: Vec<_> = futures::future::join_all(
+                        latest.iter().map(|url| self.repository.fetch_html(url)),
+                    )
                     .await;
 
                     for (i, result) in results.into_iter().enumerate() {
                         if let Ok(html) = result {
-                            if let Ok(Some(dl_url)) =
-                                tokio::task::spawn_blocking(move || {
-                                    parser::parse_episode_download(&html)
-                                })
-                                .await
-                                .unwrap_or(Ok(None))
+                            if let Ok(Some(dl_url)) = tokio::task::spawn_blocking(move || {
+                                parser::parse_episode_download(&html)
+                            })
+                            .await
+                            .unwrap_or(Ok(None))
                             {
                                 if let Some(ep) = episodes.get_mut(i) {
                                     ep.download_url = Some(dl_url);