Add partial indexes for domain check and crawl loops

- idx_domains_to_check: status WHERE last_checked_at IS NULL
- idx_domains_to_crawl: status WHERE last_checked_at IS NOT NULL AND last_crawled_at IS NULL

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

scripts/batch_update_status.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+# Batch update domains from hold to pass
+# Usage: ./batch_update_status.sh
+
+BATCH_SIZE=10000
+
+echo "Starting batch update: hold -> pass"
+
+while true; do
+    # Update a batch
+    docker exec atproto-postgres psql -U news_1440 -d news_1440 -c "
+        UPDATE domains SET status = 'pass'
+        WHERE host IN (
+            SELECT host FROM domains WHERE status = 'hold' LIMIT $BATCH_SIZE
+        );
+    " > /dev/null 2>&1
+
+    # Get rows remaining
+    REMAINING=$(docker exec atproto-postgres psql -U news_1440 -d news_1440 -t -c "SELECT COUNT(*) FROM domains WHERE status = 'hold';" | tr -d ' \n')
+
+    echo "Remaining: $REMAINING"
+
+    if [ "$REMAINING" = "0" ]; then
+        echo "Complete!"
+        break
+    fi
+
+    sleep 0.1
+done