updated layout for webmail and added http dns letsencrypt

internal/db/schema.go

@@ -208,7 +208,10 @@ CREATE TABLE IF NOT EXISTS esrv_mailboxes (
 	created_by INTEGER REFERENCES esrv_admin_users(id),
 	totp_secret TEXT NOT NULL DEFAULT '',
 	totp_enabled INTEGER NOT NULL DEFAULT 0,
-	mfa_exempt INTEGER NOT NULL DEFAULT 0
+	mfa_exempt INTEGER NOT NULL DEFAULT 0,
+	-- Off by default: collapse a run of same-subject messages in a folder view into one
+	-- expandable row. Per-mailbox, not global, since this is purely a display preference.
+	group_messages INTEGER NOT NULL DEFAULT 0
 );
 
 -- Self-service webmail portal sessions — deliberately a parallel schema to
@@ -309,6 +312,10 @@ CREATE TABLE IF NOT EXISTS esrv_mailbox_messages (
 	cached_from TEXT NOT NULL DEFAULT '',
 	cached_to TEXT NOT NULL DEFAULT '',
 	cached_subject TEXT NOT NULL DEFAULT '',
+	-- First ~150 characters of the plain-text body, cached in plain text (like the
+	-- other cached_* columns) so the folder list can show a preview snippet without
+	-- decrypting the full message just to render the list.
+	cached_preview TEXT NOT NULL DEFAULT '',
 	storage_path TEXT NOT NULL,
 	nonce BLOB NOT NULL,
 	created_at DATETIME DEFAULT CURRENT_TIMESTAMP
@@ -432,6 +439,16 @@ func migrateAddedColumns(db *sql.DB) {
 		// unrecoverable-without-code-that-no-longer-exists) keys, same "not migrated"
 		// treatment as the singular-table identities before them.
 		`ALTER TABLE esrv_mailbox_smime_identities ADD COLUMN key_pem TEXT NOT NULL DEFAULT ''`,
+		`ALTER TABLE esrv_mailboxes ADD COLUMN group_messages INTEGER NOT NULL DEFAULT 0`,
+		`ALTER TABLE esrv_mailbox_messages ADD COLUMN cached_preview TEXT NOT NULL DEFAULT ''`,
+	}
+	// The three old columns above were NOT NULL with no default, so simply adding
+	// key_pem left them behind still blocking every new insert (which only ever sets
+	// key_pem, never these) on any DB created before this migration — confirmed live:
+	// "NOT NULL constraint failed: esrv_mailbox_smime_identities.key_ciphertext". Needs
+	// SQLite 3.35+ for DROP COLUMN; modernc.org/sqlite is well past that.
+	for _, col := range []string{"key_ciphertext", "key_nonce", "key_salt"} {
+		db.Exec(`ALTER TABLE esrv_mailbox_smime_identities DROP COLUMN ` + col)
 	}
 	for _, stmt := range stmts {
 		db.Exec(stmt)