feat: add address source tracking (source_meta field) (#794)

- Add source_meta field to address table for tracking creation source
- Web: records client IP address (with fallback to 'web:unknown')
- Telegram: records 'tg:{userId}'
- Admin: records 'admin'
- Add database migration with field existence check
- Add frontend display in admin Account page
- Backward compatible: fallback if field doesn't exist

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: Claude <noreply@anthropic.com>

worker/src/constants.ts

@@ -3,7 +3,7 @@ export const CONSTANTS = {
 
     // DB Version
     DB_VERSION_KEY: 'db_version',
-    DB_VERSION: "v0.0.4",
+    DB_VERSION: "v0.0.5",
 
     // DB settings
     ADDRESS_BLOCK_LIST_KEY: 'address_block_list',