feat(tui): keyboard-only ASCII redesign of config TUI

Remove all Button widgets — saves and plugin toggles are keyboard-only
(ctrl+s, e, d). Replace Header with a plain _TitleBar Static. Apply a
dark monochrome ASCII theme: +---+ borders on inputs, DataTable, and
tab panes; #0d0d0d background; grey/white palette. Disable mouse at the
driver level via run(mouse=False). Update save test to drive via ctrl+s.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/pyra/config/tui.py

@@ -7,7 +7,7 @@ from textual.binding import Binding
 from textual.containers import Horizontal, VerticalScroll
 from textual.coordinate import Coordinate
 from textual.widget import Widget
-from textual.widgets import Button, DataTable, Footer, Header, Input, Label, Switch, TabbedContent, TabPane
+from textual.widgets import DataTable, Footer, Input, Label, Static, Switch, TabbedContent, TabPane
 
 from pyra.config.manager import load_config, save_config
 from pyra.plugins.base import BasePlugin, ConfigField
@@ -65,6 +65,21 @@ def _pfid(plugin_name: str, key: str) -> str:
     return f"pf-{plugin_name}-{key}"
 
 
+# ── Shared widgets ────────────────────────────────────────────────────────────
+
+class _TitleBar(Static):
+    DEFAULT_CSS = """
+    _TitleBar {
+        height: 1;
+        background: #1a1a1a;
+        color: #ffffff;
+        text-style: bold;
+        padding: 0 2;
+        border-bottom: ascii #444444;
+    }
+    """
+
+
 # ── Tab widgets ───────────────────────────────────────────────────────────────
 
 class _GeneralTab(VerticalScroll):
@@ -80,18 +95,10 @@ class _GeneralTab(VerticalScroll):
                     yield Switch(value=bool(current), id=_fid(f.path))
                 else:
                     yield Input(value=str(current), id=_fid(f.path))
-        with Horizontal(classes="actions"):
-            yield Button("Save", id="save-general", variant="primary")
 
     def action_save(self) -> None:
         self._do_save()
 
-    def on_button_pressed(self, event: Button.Pressed) -> None:
-        if event.button.id != "save-general":
-            return
-        self._do_save()
-        event.stop()
-
     def _do_save(self) -> None:
         cfg = load_config()
         for f in GENERAL_FIELDS:
@@ -126,9 +133,6 @@ class _PluginsTab(Widget):
                 manifest.get("description", ""),
             )
         yield table
-        with Horizontal(classes="actions"):
-            yield Button("Enable [e]", id="btn-enable", variant="success")
-            yield Button("Disable [d]", id="btn-disable")
 
     def action_enable_plugin(self) -> None:
         self._toggle_plugin("enable")
@@ -136,14 +140,6 @@ class _PluginsTab(Widget):
     def action_disable_plugin(self) -> None:
         self._toggle_plugin("disable")
 
-    def on_button_pressed(self, event: Button.Pressed) -> None:
-        if event.button.id == "btn-enable":
-            self._toggle_plugin("enable")
-            event.stop()
-        elif event.button.id == "btn-disable":
-            self._toggle_plugin("disable")
-            event.stop()
-
     def _toggle_plugin(self, action: str) -> None:
         table = self.query_one("#plugins-table", DataTable)
         if table.row_count == 0:
@@ -193,18 +189,10 @@ class _PluginConfigTab(VerticalScroll):
                     yield Input(value=str(current), id=_pfid(self._name, f.key))
             if f.description:
                 yield Label(f.description, classes="hint")
-        with Horizontal(classes="actions"):
-            yield Button("Save", id=f"save-{self._name}", variant="primary")
 
     def action_save(self) -> None:
         self._do_save()
 
-    def on_button_pressed(self, event: Button.Pressed) -> None:
-        if event.button.id != f"save-{self._name}":
-            return
-        self._do_save()
-        event.stop()
-
     def _do_save(self) -> None:
         cfg = load_config()
         settings: dict[str, Any] = dict(cfg.plugin_settings.get(self._name, {}))
@@ -230,16 +218,26 @@ class ConfigApp(App):
         Binding("ctrl+left",  "prev_tab", "Prev tab"),
     ]
     CSS = """
-    Screen { background: $surface; }
+    Screen { background: #0d0d0d; color: #c8c8c8; }
+    TabbedContent, TabPane { background: #0d0d0d; border: ascii #444444; }
+    Tabs { background: #111111; border-bottom: ascii #444444; }
+    Tab { color: #666666; padding: 0 2; }
+    Tab.-active { color: #ffffff; text-style: bold; background: #1a1a1a; }
+    Input { border: ascii #444444; background: #111111; color: #ffffff; }
+    Input:focus { border: ascii #888888; }
+    Switch { background: #111111; }
+    DataTable { border: ascii #444444; height: 1fr; background: #0d0d0d; }
+    DataTable > .datatable--header { text-style: bold; color: #aaaaaa; background: #1a1a1a; }
+    DataTable > .datatable--cursor { background: #2a2a2a; color: #ffffff; }
+    Footer { background: #111111; color: #888888; }
+    Footer > .footer--key { background: #2a2a2a; color: #ffffff; }
     .row { height: 3; margin: 0 2; }
-    .row Label { width: 26; content-align: left middle; }
+    .row Label { width: 26; content-align: left middle; color: #aaaaaa; }
-    .hint { color: $foreground 50%; margin: 0 2 1 28; }
+    .hint { color: #555555; margin: 0 2 1 28; }
-    .actions { height: 3; align: right middle; margin: 1 2; }
-    DataTable { height: 1fr; }
     """
 
     def compose(self) -> ComposeResult:
-        yield Header()
+        yield _TitleBar("PYRA CONFIGURATION")
         plugins = _installed_plugins()
         with TabbedContent():
             with TabPane("General"):
@@ -273,4 +271,4 @@ class ConfigApp(App):
 
 def launch_config_tui() -> None:
     """Open the configuration TUI. Blocks until the user quits (q / Escape)."""
-    ConfigApp().run()
+    ConfigApp().run(mouse=False)

tests/unit/test_config_tui.py

@@ -107,8 +107,8 @@ async def test_general_tab_save_persists_new_value(tmp_pyra_home):
         async with _TestApp().run_test() as pilot:
             widget = pilot.app.query_one(f"#{_fid('general.user_name')}", Input)
             widget.value = "Alice"
-            await pilot.pause()  # flush reactive update before click
+            await pilot.pause()  # flush reactive update before key press
-            await pilot.click("#save-general")
+            await pilot.press("ctrl+s")
 
     assert saved, "save_config was not called"
     assert saved[-1].general.user_name == "Alice"