feat(tui): complete terminal experience roadmap

Cargo.toml

@@ -18,6 +18,7 @@ reqwest = { version = "0.12.24", default-features = false, features = ["blocking
 rusqlite = { version = "0.32", features = ["bundled"] }
 hickory-resolver = "0.25.2"
 toml = "0.8"
+toml_edit = "0.22"
 tiktoken-rs = "0.12.0"
 dirs = "6"
 globset = "0.4"
@@ -28,13 +29,18 @@ crossbeam-channel = "0.5"
 crossterm = "0.28"
 ratatui = "0.29"
 tui-textarea = "0.7"
+qwertty = { version = "=0.1.6", features = ["tokio"] }
+supports-color = "3.0.2"
 pulldown-cmark = { version = "0.12", default-features = false }
+unicode-segmentation = "1.13.3"
 unicode-width = "0.2.0"
 zstd = "0.13"
 similar = "3.1.1"
 tempfile = "3.27.0"
 sha2 = "0.10"
 base64 = "0.22"
+syntect = { version = "5.3", default-features = false, features = ["default-syntaxes", "dump-load", "parsing", "regex-fancy"] }
+two-face = { version = "0.5", default-features = false, features = ["syntect-fancy"] }
 libc = "0.2"
 landlock = "0.4.5"
 seccompiler = "0.5.0"