Add NIP-62 end-to-end websocket tests

38 tests covering the full NIP-62 Request to Vanish lifecycle over
websocket against a live strfry relay: event submission, cron-based
deletion sweep (polled), re-broadcast prevention, relay tag validation
(matching, non-matching, missing), kind 5 protection of kind 62 in
both orderings, deletion tombstone bypass via import path, gift wrap
cleanup and blocking (ALL_RELAYS and specific serviceUrl), NIP-09
deletion event sweep, cross-pubkey isolation, timestamp boundary
semantics, persistence across restart, NIP-11 advertisement, and
feature flag behavior.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: alltheseas

test/README.md

@@ -26,3 +26,16 @@ These commands test the query engine, with and without `limit`:
 These commands test the monitor engine:
 
     perl test/filterFuzzTest.pl monitor
+
+## NIP-62 (Request to Vanish) E2E tests
+
+These tests start a live strfry relay and exercise the full NIP-62 lifecycle
+over websocket: vanish requests, cron-based event deletion, re-broadcast
+prevention, gift wrap cleanup, relay tag validation, and more.
+
+Requires Python 3.8+ with `secp256k1` and `websockets`:
+
+    pip install secp256k1 websockets
+    python3 test/nip62_e2e_test.py
+
+The suite takes ~3 minutes (cron sweep polling at 30s intervals for 5 tests).

test/cfgs/nip62Test.conf

@@ -0,0 +1,17 @@
+db = "./strfry-db-nip62-test/"
+
+events {
+    rejectEventsOlderThanSeconds = 9999999999
+}
+
+relay {
+    port = 40562
+
+    auth {
+        serviceUrl = "ws://127.0.0.1:40562"
+    }
+
+    nip62 {
+        enabled = true
+    }
+}

test/cfgs/nip62TestDisabled.conf

@@ -0,0 +1,13 @@
+db = "./strfry-db-nip62-test/"
+
+events {
+    rejectEventsOlderThanSeconds = 9999999999
+}
+
+relay {
+    port = 40562
+
+    nip62 {
+        enabled = false
+    }
+}