NIP-33: d-tag keyed replacement for parameterized replaceable events (#246)

scripts/backfill-d-tag.sql

@@ -0,0 +1,17 @@
+-- Backfill d_tag for existing NIP-33 range events (kind 30000–39999).
+-- Idempotent: only updates rows where d_tag is still NULL.
+-- Includes soft-deleted rows so the column is fully populated.
+-- Run once after adding the d_tag column to the events table.
+--
+-- Usage: psql $DATABASE_URL -f scripts/backfill-d-tag.sql
+
+UPDATE events
+SET d_tag = COALESCE(
+    (SELECT elem->>1
+     FROM jsonb_array_elements(tags) AS elem
+     WHERE elem->>0 = 'd'
+     LIMIT 1),
+    ''
+)
+WHERE kind BETWEEN 30000 AND 39999
+  AND d_tag IS NULL;

scripts/dev-setup.sh

@@ -151,6 +151,17 @@ else
       sleep 2
     done
     success "Migrations applied via pgschema"
+
+    # Run data backfills (idempotent — safe to re-run).
+    BACKFILL_DIR="${REPO_ROOT}/scripts"
+    if [[ -f "${BACKFILL_DIR}/backfill-d-tag.sql" ]]; then
+      log "Running d_tag backfill for NIP-33 events..."
+      if psql "${DATABASE_URL}" -f "${BACKFILL_DIR}/backfill-d-tag.sql" 2>/dev/null; then
+        success "d_tag backfill complete"
+      else
+        warn "d_tag backfill failed (relay startup will retry automatically)"
+      fi
+    fi
   else
     error "pgschema not found at ${PGSCHEMA}. Run: ./bin/hermit install pgschema"
     exit 1