Merge relay.ngit.dev migration: bug fixes and migration tooling

This merge includes critical bug fixes and comprehensive migration tooling
developed during the relay.ngit.dev migration effort.

Bug Fixes:
- Fix git protocol error handling to return HTTP 200 with ERR pkt-line
- Fix naughty list false positives and DNS failure identification
- Fix database query filters in load_existing_events (remove .since())
- Fix OID fetch tracking to distinguish 0 OIDs from successful fetches
- Fix purgatory event source tracking for filtered expiry logging
- Implement OID retry logic for 'not our ref' errors

Migration Tools & Documentation:
- Complete 5-phase migration analysis pipeline with orchestration script
- Phase 1: Event fetching from source relay
- Phase 2: Git sync verification
- Phase 3: Categorization and relay comparison
- Phase 4: Log extraction (parse failures, purgatory expiry)
- Phase 5: Action classification for migration decisions
- Comprehensive migration guide with lessons learned
- Troubleshooting guide for permission and corruption issues

Configuration:
- Add NGIT_LOG_LEVEL configuration option
- Update git throttle limits to 60/minute
- Improve logging throughout for better observability

1 files changed, 8 insertions, 8 deletions

diff --git a/src/nostr/events.rs b/src/nostr/events.rs
index 718633e..a441742 100644
--- a/src/nostr/events.rs
+++ b/src/nostr/events.rs
@@ -419,14 +419,14 @@ pub fn validate_announcement(
     // GRASP-01: Normal mode - accept if announcement lists our service AND matches repository whitelist (if enabled)
     if lists_service && !archive_config.read_only {
         // Check repository whitelist if enabled
-        if repository_config.enabled() {
-            if !repository_config.matches(&npub, &announcement.identifier) {
-                return AnnouncementResult::Reject(format!(
-                    "Announcement lists service but does not match repository whitelist. \
-                     Repository {}/{} not in whitelist",
-                    npub, announcement.identifier
-                ));
-            }
+        if repository_config.enabled()
+            && !repository_config.matches(&npub, &announcement.identifier)
+        {
+            return AnnouncementResult::Reject(format!(
+                "Announcement lists service but does not match repository whitelist. \
+                 Repository {}/{} not in whitelist",
+                npub, announcement.identifier
+            ));
         }
         return AnnouncementResult::Accept;
     }