feat(tui): full keyboard support for config TUI and chat slash completion

Add Header/Footer with visible key hints, ctrl+right/ctrl+left tab navigation,
ctrl+s save bindings for General and plugin config tabs, e/d bindings for
plugin enable/disable in the Plugins tab. Extract shared _do_save() and
_toggle_plugin() helpers so button and key paths share one code path.

Add WordCompleter to the chat REPL so Tab completes slash commands.

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

src/pyra/chat/session.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 import litellm
 from prompt_toolkit import PromptSession
+from prompt_toolkit.completion import WordCompleter
 from prompt_toolkit.history import FileHistory
 
 from pyra.chat.history import ConversationHistory
@@ -159,12 +160,15 @@ def start_chat() -> None:
     ))
 
     history = ConversationHistory(cfg, registry)
-    session: PromptSession = PromptSession(
-        history=FileHistory(str(_HISTORY_FILE)),
-        multiline=False,
-    )
 
     plugin_slash = registry.get_slash_commands()
+    all_commands = list(_STATIC_COMMANDS) + list(plugin_slash)
+    session: PromptSession = PromptSession(
+        history=FileHistory(str(_HISTORY_FILE)),
+        completer=WordCompleter(all_commands, sentence=True),
+        complete_while_typing=False,
+        multiline=False,
+    )
 
     provider = get_provider(cfg.ai.provider_id)
     render_system(

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, Input, Label, Switch, TabbedContent, TabPane
+from textual.widgets import Button, DataTable, Footer, Header, Input, Label, Switch, TabbedContent, TabPane
 
 from pyra.config.manager import load_config, save_config
 from pyra.plugins.base import BasePlugin, ConfigField
@@ -68,6 +68,8 @@ def _pfid(plugin_name: str, key: str) -> str:
 # ── Tab widgets ───────────────────────────────────────────────────────────────
 
 class _GeneralTab(VerticalScroll):
+    BINDINGS = [Binding("ctrl+s", "save", "Save")]
+
     def compose(self) -> ComposeResult:
         cfg = load_config()
         for f in GENERAL_FIELDS:
@@ -81,9 +83,16 @@ class _GeneralTab(VerticalScroll):
         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:
             wid = _fid(f.path)
@@ -94,11 +103,14 @@ class _GeneralTab(VerticalScroll):
             _set_nested(cfg, f.path, cfg_val)
         save_config(cfg)
         self.app.notify("General settings saved.")
-        event.stop()
 
 
 class _PluginsTab(Widget):
     DEFAULT_CSS = "_PluginsTab { height: 1fr; width: 1fr; }"
+    BINDINGS = [
+        Binding("e", "enable_plugin",  "Enable"),
+        Binding("d", "disable_plugin", "Disable"),
+    ]
 
     def compose(self) -> ComposeResult:
         cfg = load_config()
@@ -115,26 +127,35 @@ class _PluginsTab(Widget):
             )
         yield table
         with Horizontal(classes="actions"):
-            yield Button("Enable", id="btn-enable", variant="success")
-            yield Button("Disable", id="btn-disable")
+            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")
+
+    def action_disable_plugin(self) -> None:
+        self._toggle_plugin("disable")
 
     def on_button_pressed(self, event: Button.Pressed) -> None:
-        btn_id = event.button.id
-        if btn_id not in ("btn-enable", "btn-disable"):
-            return
+        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:
-            event.stop()
             return
         plugin_name = str(table.get_cell_at(Coordinate(table.cursor_coordinate.row, 0)))
         cfg = load_config()
-        if btn_id == "btn-enable" and plugin_name not in cfg.plugins.enabled:
+        if action == "enable" and plugin_name not in cfg.plugins.enabled:
             cfg.plugins.enabled.append(plugin_name)
-        elif btn_id == "btn-disable" and plugin_name in cfg.plugins.enabled:
+        elif action == "disable" and plugin_name in cfg.plugins.enabled:
             cfg.plugins.enabled.remove(plugin_name)
         save_config(cfg)
         self._refresh_table()
-        event.stop()
 
     def _refresh_table(self) -> None:
         cfg = load_config()
@@ -152,6 +173,8 @@ class _PluginsTab(Widget):
 
 
 class _PluginConfigTab(VerticalScroll):
+    BINDINGS = [Binding("ctrl+s", "save", "Save")]
+
     def __init__(self, name: str, plugin: Any) -> None:
         super().__init__()
         self._name = name
@@ -173,9 +196,16 @@ class _PluginConfigTab(VerticalScroll):
         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, {}))
         for f in self._plugin.config_fields():
@@ -187,7 +217,6 @@ class _PluginConfigTab(VerticalScroll):
         cfg.plugin_settings[self._name] = settings
         save_config(cfg)
         self.app.notify(f"{self._name} settings saved.")
-        event.stop()
 
 
 # ── App ───────────────────────────────────────────────────────────────────────
@@ -195,8 +224,10 @@ class _PluginConfigTab(VerticalScroll):
 class ConfigApp(App):
     TITLE = "Pyra Configuration"
     BINDINGS = [
-        Binding("q", "quit", "Quit"),
-        Binding("escape", "quit", "Quit"),
+        Binding("q",          "quit",     "Quit"),
+        Binding("escape",     "quit",     "Quit",     show=False),
+        Binding("ctrl+right", "next_tab", "Next tab"),
+        Binding("ctrl+left",  "prev_tab", "Prev tab"),
     ]
     CSS = """
     Screen { background: $surface; }
@@ -208,6 +239,7 @@ class ConfigApp(App):
     """
 
     def compose(self) -> ComposeResult:
+        yield Header()
         plugins = _installed_plugins()
         with TabbedContent():
             with TabPane("General"):
@@ -218,6 +250,25 @@ class ConfigApp(App):
                 if plugin is not None and plugin.config_fields():
                     with TabPane(name):
                         yield _PluginConfigTab(name, plugin)
+        yield Footer()
+
+    def action_next_tab(self) -> None:
+        tc = self.query_one(TabbedContent)
+        panes = list(tc.query("TabPane"))
+        ids = [p.id for p in panes]
+        try:
+            tc.active = ids[(ids.index(tc.active) + 1) % len(ids)]
+        except (ValueError, IndexError):
+            pass
+
+    def action_prev_tab(self) -> None:
+        tc = self.query_one(TabbedContent)
+        panes = list(tc.query("TabPane"))
+        ids = [p.id for p in panes]
+        try:
+            tc.active = ids[(ids.index(tc.active) - 1) % len(ids)]
+        except (ValueError, IndexError):
+            pass
 
 
 def launch_config_tui() -> None: