Garbage: retry the apply after the deleting transaction has committed

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

app/services/ContentService.ts

@@ -158,19 +158,23 @@ class ContentService {
    * what it found. Then the release is deleted if it turned out to be garbage (D42).
    */
   async apply(task: InspectTask, probe: InspectProbe): Promise<ContentResult> {
-    let result: ContentResult
-    try {
-      result = await this.applyProbe(task, probe)
-    } catch (error: any) {
-      // Another probe deleted a release this one writes to as garbage meanwhile (LOG.md 2026-10-08 (7)):
-      // the file's own release (nothing left to do), or one its par2 set joins (once more: the set
-      // then finds the release's files gone and makes its own).
-      if (error.code !== '23503') throw error
-      if (!(await db.from('files').where('id', task.fileId).select('id').first())) {
-        return { named: 0, contentType: probe.contentType, garbage: 'deleted meanwhile' }
+    let result: ContentResult | undefined
+    // Another probe deleted a release this one writes to as garbage meanwhile (LOG.md 2026-10-08 (7)):
+    // the file's own release (nothing left to do), or one its par2 set joins. Again once that
+    // deletion has committed: the set then finds the release's files gone and makes its own.
+    for (const wait of [0, 1000, 3000]) {
+      if (wait) await new Promise((resolve) => setTimeout(resolve, wait))
+      try {
+        result = await this.applyProbe(task, probe)
+        break
+      } catch (error: any) {
+        if (error.code !== '23503' || wait === 3000) throw error
+        if (!(await db.from('files').where('id', task.fileId).select('id').first())) {
+          return { named: 0, contentType: probe.contentType, garbage: 'deleted meanwhile' }
+        }
       }
-      result = await this.applyProbe(task, probe)
     }
+    if (!result) throw new Error(`Applying the probe of file ${task.fileId} gave no result`)
     result.garbage = (await GarbageFilter.afterProbe(task.fileId, probe.contentType)) ?? undefined
     return result
   }