added notes

PROTON.md

@@ -67,7 +67,7 @@ TCP listener on `localhost:587` (configurable). Minimal implementation:
 
 Components 2 → 3 → 4 can be built and tested with a simple CLI harness before any
 network server exists. Component 5 is pure logic with no I/O. Components 6 and 7 are
-the final pieces and can be validated by pointing `skim` at localhost.
+the final pieces and can be validated by pointing `tuimail` at localhost.
 
 ## References
 
@@ -75,4 +75,9 @@ the final pieces and can be validated by pointing `skim` at localhost.
 - [ProtonMail/go-proton-api](https://github.com/ProtonMail/go-proton-api) — official Go API client
 - [ProtonMail/proton-crypto-rs](https://github.com/ProtonMail/proton-crypto-rs) — official Rust crypto crates
 - [ProtonMail/proton-srp](https://github.com/ProtonMail/proton-srp) — official Rust SRP implementation
-- [rpgp](https://github.com/rpgp/rpgp) — pure Rust OpenPGP implementation
+- [rpgp](https://github.com/rpgp/rpgp) — pure Rust OpenPGP implementation
+
+More work:
+- local storge in the proton-bridge. Decide whether to store the message body pgp-encrypted, as it came from the proton server, or 
+use decrypt it (and serve to the client using imap) and create a AES-256-GCM encrypted cache
+- email replies in the tui client have not yet been implemented