Remove publishing code - now handled by publish service

Publishing functionality has been moved to the standalone publish service.
Removed:
- publisher.go, pds_auth.go, pds_records.go, image.go, handle.go
- StartPublishLoop and related functions from crawler.go
- Publish loop invocation from main.go

Updated CLAUDE.md to reflect the new architecture.

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

main.go

@@ -43,9 +43,6 @@ func main() {
 	// TLD sync loop (background) - syncs with IANA, marks dead TLDs, adds new ones
 	go crawler.startTLDSyncLoop()
 
-	// Publish loop (background) - autopublishes items for approved feeds
-	go crawler.StartPublishLoop()
-
 	// Domain loop (background) - domain_check + feed_crawl
 	go crawler.StartDomainLoop()