perf(quartz): batch inserts + crawl-wide dedup in GrapeRankDataCrawler

The crawl re-verified and re-inserted the same event many times: the outbox
model mirrors each event (especially kind:10002 relay lists) across relays,
indexers, and rounds, but dedup lived in a per-drain SeenIds, so only the copies
within one drain were caught. Add a crawl-wide seen-set (thread-safe ConcurrentSet
of event ids, shared across all 24 concurrent drains and every round), checked
before verify and added only after verify so a forged copy can't suppress the
genuine one. Group-commit the store writes via IEventStore.batchInsert instead of
one transaction per event.

Measured on a from-scratch --max-hops 3 crawl: events actually verified+stored
dropped ~34% (112k -> 74k) and verify time fell in lockstep. The write path now
also reports verify/insert timing + events_stored in Stats, exposed as verify_ms/
insert_ms/events_stored on the CLI, and takes an --insert-batch knob.

Finding: with the work reduced, inserts serialize on SQLite's single writer
mutex rather than transaction count, and the crawl's wall-clock ceiling is the
drain-timeout retry tail on dead outboxes, not the disk.

cli/src/main/kotlin/com/vitorpamplona/amethyst/cli/commands/GrapeRankCommand.kt

@@ -131,6 +131,10 @@ object GrapeRankCommand {
         val offline = args.bool("offline")
         val diagnose = args.bool("diagnose")
         val timeoutMs = args.longFlag("timeout", 10L) * 1000
+        // How many verified events the crawler group-commits per store write. 1
+        // forces the per-event insert path (baseline); higher amortizes the SQLite
+        // transaction + writer-mutex cost across the batch.
+        val insertBatch = args.intFlag("insert-batch", 500)
         val doPublish = args.bool("publish")
         // Publish cutoff: only cards with rank >= this are published; existing
         // cards for targets below it (or gone from the graph) are retracted. Rank
@@ -188,6 +192,7 @@ object GrapeRankCommand {
                                 maxHops = maxHops,
                                 timeoutMs = timeoutMs,
                                 diagnose = diagnose,
+                                insertBatchSize = insertBatch,
                             ),
                         log = { System.err.println(it) },
                     )
@@ -264,6 +269,10 @@ object GrapeRankCommand {
                     "reports_deleted" to reportsDeleted,
                     "users_scored" to rankedIds.size,
                     "download_ms" to crawlStats?.downloadMs,
+                    "verify_ms" to crawlStats?.verifyMs,
+                    "insert_ms" to crawlStats?.insertMs,
+                    "events_stored" to crawlStats?.eventsStored,
+                    "insert_batch" to insertBatch,
                     "store_load_ms" to storeLoadMs,
                     "graph_build_ms" to buildMs,
                     "scoring_ms" to scoringMs,