refactor: replace settings buttons with switches and simplify provider sheet

Swap daemon management and keep-running-after-quit buttons for Switch
toggles. Remove the restart/start daemon control. Simplify the provider
diagnostic sheet to reuse shared settings styles and SettingsSection.
Drop the unused "sm" size variant from the Switch component. Remove
trailing periods from hint text for consistency.

packages/app/src/screens/settings/host-page.tsx

@@ -17,7 +17,7 @@ import { formatConnectionStatus, getConnectionStatusTone } from "@/utils/daemons
 import { confirmDialog } from "@/utils/confirm-dialog";
 import { settingsStyles } from "@/styles/settings";
 import { Button } from "@/components/ui/button";
-import { SegmentedControl } from "@/components/ui/segmented-control";
+import { Switch } from "@/components/ui/switch";
 import { AdaptiveModalSheet } from "@/components/adaptive-modal-sheet";
 import { useDaemonConfig } from "@/hooks/use-daemon-config";
 import { useIsLocalDaemon } from "@/hooks/use-is-local-daemon";
@@ -29,11 +29,6 @@ import { LocalDaemonSection } from "@/desktop/components/desktop-updates-section
 const RESTART_CONFIRMATION_MESSAGE =
   "This will restart the daemon. Agents running on it will keep going; the app will reconnect automatically.";
 
-const INJECT_TOOLS_OPTIONS = [
-  { value: "on", label: "On" },
-  { value: "off", label: "Off" },
-];
-
 function formatHostConnectionLabel(connection: HostConnection): string {
   if (connection.type === "relay") {
     return `Relay (${connection.relayEndpoint})`;
@@ -579,7 +574,7 @@ function RestartDaemonCard({ host }: { host: HostProfile }) {
         <View style={settingsStyles.rowContent}>
           <Text style={settingsStyles.rowTitle}>Restart daemon</Text>
           <Text style={settingsStyles.rowHint}>
-            Restarts the daemon process. The app will reconnect automatically.
+            Restarts the daemon process. The app will reconnect automatically
           </Text>
         </View>
         <Button
@@ -602,10 +597,10 @@ function InjectPaseoToolsCard({ serverId }: { serverId: string }) {
   const { config, patchConfig } = useDaemonConfig(serverId);
 
   const handleValueChange = useCallback(
-    (value: string) => {
+    (next: boolean) => {
       void patchConfig({
         mcp: {
-          injectIntoAgents: value === "on",
+          injectIntoAgents: next,
         },
       });
     },
@@ -623,11 +618,10 @@ function InjectPaseoToolsCard({ serverId }: { serverId: string }) {
             Automatically inject Paseo MCP tools into new agents
           </Text>
         </View>
-        <SegmentedControl
-          size="sm"
-          value={config?.mcp.injectIntoAgents === false ? "off" : "on"}
+        <Switch
+          value={config?.mcp.injectIntoAgents !== false}
           onValueChange={handleValueChange}
-          options={INJECT_TOOLS_OPTIONS}
+          accessibilityLabel="Inject Paseo tools"
         />
       </View>
     </View>

packages/app/src/screens/settings/providers-section.tsx

@@ -123,7 +123,6 @@ function ProviderRow({
             value={enabled}
             onValueChange={handleToggleValueChange}
             disabled={isToggling}
-            size="sm"
             accessibilityLabel={`Enable ${def.label}`}
           />
         </>