feat(images): repair reported covers and achievement icons at night

src/main/resources/application.yml

@@ -61,6 +61,11 @@ app:
     achievement-ttl-hours: 1
     schema-ttl-days: 30
     speedrun-ttl-days: 30
+    # Reported broken pictures, repaired after the nightly sync.
+    image-repair-cron: "0 30 1 * * *"
+    image-repair-batch: 200
+    image-repair-max-attempts: 3
+    image-repair-retry-days: 30
 
 resilience4j:
   retry:

src/main/resources/db/migration/V11__broken_image.sql

@@ -0,0 +1,9 @@
+-- Pictures a browser could not load. One row per game and kind; a new report only moves reported_at.
+CREATE TABLE broken_image (
+    appid       BIGINT      NOT NULL,
+    kind        VARCHAR(24) NOT NULL,
+    reported_at TIMESTAMPTZ NOT NULL,
+    checked_at  TIMESTAMPTZ,
+    attempts    INTEGER     NOT NULL DEFAULT 0,
+    PRIMARY KEY (appid, kind)
+);