feat: implement message deletion functionality and improve draft handling

- Added `MoveToTrash` method in `WebmailRepository` to move messages to the Trash folder instead of deleting them permanently.
- Introduced `handleDelete` method in `mailAPI` to handle message deletion requests from the client.
- Updated router to include a new route for message deletion.
- Enhanced the compose page to manage draft integrity, ensuring drafts are correctly associated with sent messages.
- Implemented UI changes to allow users to delete messages from the mail folder view.
- Added tests to verify the correct behavior of message deletion and draft handling.
- Updated database migration scripts to reconcile folder counters and ensure accurate unread counts.
- Added tests for TLS-RPT report parsing and webmail repository functionalities.

services/protocols/internal/domain/entity/tls_rpt_report.go

@@ -34,7 +34,10 @@ type tlsRptJsonReport struct {
 	Policies []struct {
 		Policy struct {
 			PolicyType string `json:"policy-type"`
-			Domain     string `json:"domain"`
+			// RFC 8460 section 4.4 names this "policy-domain". Reading it as
+			// "domain" parsed every real report to a blank domain, so a stored
+			// report could not be attributed to the domain it was about.
+			Domain string `json:"policy-domain"`
 		} `json:"policy"`
 		Summary struct {
 			TotalSuccessfulSessionCount int `json:"total-successful-session-count"`