Add word wrapping and cursor mapping utilities to core library; integrate advanced text input support in TUI. Update dependencies accordingly.

Cargo.toml

@@ -19,6 +19,7 @@ futures-util = "0.3"
 # TUI framework
 ratatui = "0.28"
 crossterm = "0.28"
+tui-textarea = "0.6"
 
 # HTTP client and JSON handling
 reqwest = { version = "0.12", features = ["json", "stream"] }
@@ -48,4 +49,6 @@ clap = { version = "4.0", features = ["derive"] }
 
 # Dev dependencies
 tempfile = "3.8"
-tokio-test = "0.4"
+tokio-test = "0.4"
+
+# For more keys and their definitions, see https://doc.rust-lang.org/cargo/reference/manifest.html