[BUG] Mailbox discovery crashes if folder name contains double quotes (")

[stan2021nats]

Version

1.6.2

Steps to Reproduce

Connect Bichon to a Dovecot IMAP server.

Create an IMAP folder/mailbox containing literal double quotes in its name, for example: "1234" (with literal double quotes around 1234).

Try to perform remote mailbox discovery (GET /api/v1/list-mailboxes/{account_id}?remote=true or via the GUI).

Issue Description

When performing remote mailbox discovery, Bichon fails and aborts the entire process if it encounters any IMAP folder containing literal double quotes (") in its name.

Instead of completing the discovery of other folders, the process immediately crashes with an ImapCommandFailed error.

Based on the raw error message (provided in the logs section below), the backend seems to send a double-escaped or improperly handled string containing literal backslashes (like "1234") back to the IMAP server during subsequent requests (like STATUS or SELECT). The IMAP server (Dovecot) then rejects the command with NO Mailbox doesn't exist, which in turn crashes the client-side parser.

Screenshots or Logs (optional)

Here is the exact log of the error captured during the discovery failure for the folder "1234":

Generic { message: "No(\n "code: None, info: Some("Mailbox doesn't exist: \\\"1234\\\" (0.001 + 0.000 secs).")",\n)", location: Location { file: "crates/core/src/mailbox/list.rs", line: 168, column: 26, }, code: ImapCommandFailed, }

[rustmailer]

then why do you have to add double quotes to the email folder name?

[stan2021nats]

We didn't originally add those double quotes ourselves. We first encountered this issue on a real production mail server, where some long-existing user mailboxes already contain double quotes in folder names.

I then created the "1234" folder intentionally only as a minimal test case to confirm that double quotes alone reproduce the problem.

Some of these users have hundreds of folders accumulated over many years, so manually renaming existing folders is not really feasible. More importantly, a single folder containing double quotes currently causes mailbox discovery/sync to fail for the entire account.

[rustmailer]

This issue requires modifications to the underlying async-imap crate, so it's unlikely to be addressed in the short term