Add a composable ratatui TUI to ppvm-cli

.github/workflows/ci.yml

@@ -70,11 +70,12 @@ jobs:
         run: cargo test -p ppvm-stim --features rayon
 
   # Cross-compile the whole workspace for browser wasm so a wasm regression
-  # surfaces in CI. `ppvm-python-native` (a CPython extension) and `ppvm-cli`
-  # (a terminal binary using clap and forcing the rayon feature) are never
-  # browser-wasm targets and are excluded; the reusable engine lives in the
-  # library crates, which stay covered. Native-only acceleration deps (gxhash,
-  # dashmap → rayon, ahash) are pruned automatically by the `cfg(not(target_arch =
+  # surfaces in CI. Three crates are never browser-wasm targets and are
+  # excluded: `ppvm-python-native` (a CPython extension), `ppvm-cli` (a terminal
+  # binary), and `ppvm-tui` (its ratatui/crossterm terminal UI). The reusable
+  # engine lives in the library crates, which stay covered. Native-only
+  # acceleration deps (gxhash, dashmap →
+  # rayon, ahash) are pruned automatically by the `cfg(not(target_arch =
   # "wasm32"))` dependency tables, and `rand`'s entropy uses the getrandom
   # `wasm_js` backend wired in `.cargo/config.toml` — so no extra flags here.
   wasm-build:
@@ -91,7 +92,7 @@ jobs:
       - uses: Swatinem/rust-cache@v2
 
       - name: Build workspace for wasm32-unknown-unknown
-        run: cargo build --target wasm32-unknown-unknown --workspace --exclude ppvm-python-native --exclude ppvm-cli
+        run: cargo build --target wasm32-unknown-unknown --workspace --exclude ppvm-python-native --exclude ppvm-cli --exclude ppvm-tui
 
   python-tests:
     name: Python tests