refactor(frontend): retire Slint application

cx

crates/qbzd/Cargo.toml

@@ -10,7 +10,7 @@ name = "qbzd"
 path = "src/main.rs"
 
 [dependencies]
-# workspace crates — the slint-free column ONLY (01-architecture.md §1.2)
+# workspace crates shared by the daemon and the Qt application
 qbz-models = { path = "../qbz-models" }
 qbz-app = { path = "../qbz-app" }
 qbz-core = { path = "../qbz-core" }
@@ -47,9 +47,8 @@ urlencoding = "2"            # OAuth redirect_url encode + callback decode (in l
 open = "5"                   # system-browser launch for `qbzd login` (in lock via qbz)
 clap = { version = "4", features = ["derive"] }
 clap_complete = "4"
-# T13 setup TUI. ratatui 0.30 (NEVER 0.29 — 0.29 pins unicode-width "=0.2.0",
-# unresolvable against Slint's annotate-snippets 0.12.16 which needs >=0.2.2;
-# ratatui-core 0.30 accepts >=0.2.0,<=0.2.2 → unifies on the lock's 0.2.2, IV5).
+# T13 setup TUI. Keep ratatui 0.30 aligned with the workspace's unicode-width
+# resolution; ratatui-core 0.30 accepts the locked 0.2.2 version (IV5).
 # The `crossterm` backend is a DEFAULT feature; re-exported as ratatui::crossterm.
 ratatui = "0.30"