fix: preserve attachment lifecycle boundaries

Cargo.lock

@@ -4413,6 +4413,8 @@ dependencies = [
  "tokio",
  "tracing",
  "unicode-normalization",
+ "unicode-properties",
+ "unicode-security",
  "uuid",
 ]
 
@@ -5327,6 +5329,7 @@ name = "tui"
 version = "0.1.0"
 dependencies = [
  "agen",
+ "async-trait",
  "base64 0.22.1",
  "client",
  "crossterm 0.28.1",
@@ -5437,6 +5440,22 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7df058c713841ad818f1dc5d3fd88063241cc61f49f5fbea4b951e8cf5a8d71d"
 
+[[package]]
+name = "unicode-script"
+version = "0.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "383ad40bb927465ec0ce7720e033cb4ca06912855fc35db31b5755d0de75b1ee"
+
+[[package]]
+name = "unicode-security"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e4ddba1535dd35ed8b61c52166b7155d7f4e4b8847cec6f48e71dc66d8b5e50"
+dependencies = [
+ "unicode-normalization",
+ "unicode-script",
+]
+
 [[package]]
 name = "unicode-segmentation"
 version = "1.13.2"