SeaORM: enclosures, downloads and the reaper

Twelve enclosure functions move to SeaORM: recording, the download queue,
marking done or failed, requeueing, and what the reaper may delete. INSERT OR
IGNORE becomes ON CONFLICT DO NOTHING; the reaper's read verdict is true or
false rather than 1 or 0, which Postgres would type as a 32-bit integer and
refuse to read as an i64; `read = 1` and `flagged = 1` test the booleans
themselves. retention::run and its callers (reap, rm, retire_group,
retire_stranded) become async.

The reaper deletes files, so it was checked on a copy of production against the
old SQL on the same file: all 2,195 candidates, identical and in the same order.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/web.rs

@@ -1422,7 +1422,7 @@ async fn remove_feed(
     }
     cfg.save(&state.config_path)?;
     state.ctx.reload_cfg(&state.config_path)?;
-    crate::retire_group(&state.ctx, &id)?;
+    crate::retire_group(&state.ctx, &id).await?;
     Ok(StatusCode::NO_CONTENT)
 }
 
@@ -1458,12 +1458,12 @@ async fn download_now(
     let enc = state
         .ctx
         .db
-        .enclosure(id)?
+        .enclosure(id).await?
         .ok_or_else(|| anyhow::anyhow!("no enclosure {id}"))?;
     if enc.path.is_some() {
         return Ok(StatusCode::NO_CONTENT); // Already here.
     }
-    state.ctx.db.requeue(id)?;
+    state.ctx.db.requeue(id).await?;
     state
         .cmds
         .send(Command::Download { enclosure: id })
@@ -1487,7 +1487,7 @@ async fn delete_file(
     let enc = state
         .ctx
         .db
-        .enclosure(id)?
+        .enclosure(id).await?
         .ok_or_else(|| anyhow::anyhow!("no enclosure {id}"))?;
 
     // There is one copy of the file: deleting it deletes everyone's. Say so before doing
@@ -1519,7 +1519,7 @@ async fn delete_file(
         return Err(e.into());
     }
     // The row survives as 'reaped', which is what stops the next scan re-downloading it.
-    state.ctx.db.mark_reaped(id)?;
+    state.ctx.db.mark_reaped(id).await?;
     state.events.send(Event::Reaped {
         path: enc.path.unwrap_or_default(),
         bytes: enc.length.unwrap_or(0).max(0) as u64,
@@ -1573,7 +1573,7 @@ async fn media(
     Path(id): Path<i64>,
     req: Request,
 ) -> Response {
-    let Ok(Some(enc)) = state.ctx.db.enclosure(id) else {
+    let Ok(Some(enc)) = state.ctx.db.enclosure(id).await else {
         return (StatusCode::NOT_FOUND, "no such enclosure").into_response();
     };
     let Some(path) = enc.path else {
@@ -1648,9 +1648,9 @@ async fn download_latest(
     Path(id): Path<String>,
     Json(body): Json<HowMany>,
 ) -> Result<Json<serde_json::Value>, ApiError> {
-    let ids = state.ctx.db.undownloaded(&id, body.count.clamp(1, 100))?;
+    let ids = state.ctx.db.undownloaded(&id, body.count.clamp(1, 100)).await?;
     for enc in &ids {
-        state.ctx.db.requeue(*enc)?;
+        state.ctx.db.requeue(*enc).await?;
         state
             .cmds
             .send(Command::Download { enclosure: *enc })