diff --git a/apps/mobile/src/agent-ui.tsx b/apps/mobile/src/agent-ui.tsx
index ead833976..3f5716093 100644
--- a/apps/mobile/src/agent-ui.tsx
+++ b/apps/mobile/src/agent-ui.tsx
@@ -164,21 +164,6 @@ export function TaskCard({
     </Pressable>
   );
 }
-export function ChatWork() {
-  const { data } = useAgentWorkspace();
-  const tasks = [...(data?.tasks || [])]
-    .filter(activeTask)
-    .sort((a, b) => b.createdAt.localeCompare(a.createdAt))
-    .slice(0, 2);
-  if (!tasks.length) return null;
-  return (
-    <View style={{ gap: 10 }}>
-      {tasks.map((task) => (
-        <TaskCard task={task} key={task.id} compact />
-      ))}
-    </View>
-  );
-}
 export function AgentActivityScreen() {
   const { data } = useAgentWorkspace();
   const [filter, setFilter] = useState("All");
diff --git a/apps/mobile/src/chat.tsx b/apps/mobile/src/chat.tsx
index 746ce12d2..fb04389ee 100644
--- a/apps/mobile/src/chat.tsx
+++ b/apps/mobile/src/chat.tsx
@@ -94,8 +94,8 @@ export function WorkspaceTools() {
     name: "use_desktop",
     description: "Show the agent working on the computer's desktop",
     parameters: displayParameters,
-    render: ({ toolCallId, result, status }) => (
-      <DesktopToolCard toolCallId={toolCallId} result={result} loading={status !== "complete"} />
+    render: ({ result, status }) => (
+      <DesktopToolCard result={result} loading={status !== "complete"} />
     ),
   });
   useRenderTool({
@@ -653,7 +653,6 @@ export function ChatScreen({
         {!!latestDesktop && (
           <DesktopToolCard
             live
-            toolCallId={latestDesktop}
             result={
               messages.find(
                 (message) => message.role === "tool" && message.toolCallId === latestDesktop,
diff --git a/apps/mobile/src/desktop-tool-card.tsx b/apps/mobile/src/desktop-tool-card.tsx
index cce31a1a6..2f8e07cf3 100644
--- a/apps/mobile/src/desktop-tool-card.tsx
+++ b/apps/mobile/src/desktop-tool-card.tsx
@@ -30,7 +30,6 @@ export function DesktopToolCard({
   live = false,
   loading,
 }: {
-  toolCallId: string;
   live?: boolean;
   result: unknown;
   loading: boolean;
diff --git a/apps/mobile/src/screens.tsx b/apps/mobile/src/screens.tsx
index 5f2345a84..b1357dc6b 100644
--- a/apps/mobile/src/screens.tsx
+++ b/apps/mobile/src/screens.tsx
@@ -4,7 +4,6 @@ import {
   ArrowDownToLine,
   ArrowUpRight,
   CalendarDays,
-  Check,
   CheckCheck,
   ChevronLeft,
   ChevronRight,
@@ -29,7 +28,6 @@ import {
   Pressable,
   Text,
   TextInput,
-  useWindowDimensions,
   View,
 } from "react-native";
 import type {
@@ -51,7 +49,6 @@ import {
   ErrorNotice,
   IconButton,
   LinkRow,
-  Mascot,
   relativeDate,
   resultSummary,
   SectionHeading,
@@ -68,322 +65,6 @@ function todayDate() {
 function eventDate(event: CalendarEvent) {
   return event.allDay ? event.start : localDateTime(event.start, event.timeZone).date;
 }
-export function TodayScreen() {
-  const { workspace: w, navigate, open, ask } = useWorkspace();
-  const wide = useWindowDimensions().width > 1180;
-  const pending = w.actions.filter((a) => a.status === "awaiting_review");
-  const unread = w.mail.filter((m) => m.unread);
-  const today = todayDate();
-  const events = w.events
-    .filter((e) => eventDate(e) === today)
-    .sort((a, b) => a.start.localeCompare(b.start));
-  return (
-    <View style={{ gap: 25 }}>
-      <View
-        style={[
-          {
-            backgroundColor: "#E8F2F8",
-            borderRadius: 24,
-            padding: 32,
-            minHeight: 228,
-            overflow: "hidden",
-          },
-          s.row,
-        ]}
-      >
-        <View style={{ flex: 1, gap: 15, zIndex: 1 }}>
-          <View style={[s.row, { gap: 7 }]}>
-            <Sparkles size={13} color={colors.blueDark} />
-            <Text style={[s.label, { color: colors.blueDark }]}>A little clarity, every day</Text>
-          </View>
-          <Text
-            style={{
-              fontSize: wide ? 39 : 29,
-              lineHeight: wide ? 45 : 36,
-              letterSpacing: -1.7,
-              fontWeight: "500",
-              color: colors.text,
-            }}
-          >
-            Your day, with a little{"\n"}more room to breathe.
-          </Text>
-          <Text style={[s.muted, { maxWidth: 420, color: "#617680" }]}>
-            {events.length ? `${events.length} things on your calendar` : "Your calendar has room"}
-            {unread.length ? `, ${unread.length} unread emails` : ""}.{"\n"}Let’s make space for
-            what matters.
-          </Text>
-          <Button
-            onPress={() => ask("Help me plan my day")}
-            icon={Sparkles}
-            primary
-            style={{ alignSelf: "flex-start", marginTop: 5 }}
-          >
-            Plan my day
-          </Button>
-        </View>
-        {wide && (
-          <View style={{ width: 220, height: 210, alignItems: "center", justifyContent: "center" }}>
-            <View
-              style={{
-                position: "absolute",
-                width: 190,
-                height: 190,
-                borderRadius: 100,
-                backgroundColor: "#DAEAF2",
-              }}
-            />
-            <View
-              style={{
-                position: "absolute",
-                width: 145,
-                height: 145,
-                borderRadius: 80,
-                borderWidth: 1,
-                borderColor: "#C8DBE6",
-              }}
-            />
-            <Mascot size={94} />
-            <View
-              style={[
-                s.row,
-                {
-                  position: "absolute",
-                  top: 17,
-                  left: -19,
-                  padding: 11,
-                  gap: 7,
-                  backgroundColor: "#FFF",
-                  borderRadius: 13,
-                  transform: [{ rotate: "-7deg" }],
-                },
-              ]}
-            >
-              <Check size={14} color="#739174" />
-              <Text style={s.small}>A lighter day</Text>
-            </View>
-            <View
-              style={[
-                s.row,
-                {
-                  position: "absolute",
-                  bottom: 18,
-                  right: -8,
-                  padding: 12,
-                  gap: 8,
-                  backgroundColor: "#FFF",
-                  borderRadius: 13,
-                  transform: [{ rotate: "5deg" }],
-                },
-              ]}
-            >
-              <CalendarDays size={17} color={colors.blueDark} />
-              <Text style={s.small}>Everything, together</Text>
-            </View>
-          </View>
-        )}
-      </View>
-      <View style={{ flexDirection: "row", gap: 13, flexWrap: "wrap" }}>
-        {[
-          {
-            label: "UNREAD EMAILS",
-            value: unread.length,
-            note: "A fresh look at your inbox",
-            icon: Mail,
-            section: "mail" as const,
-            tint: colors.sky,
-          },
-          {
-            label: "ON THE CALENDAR",
-            value: events.length,
-            note: "Make room for your priorities",
-            icon: CalendarDays,
-            section: "calendar" as const,
-            tint: colors.green,
-          },
-          {
-            label: "WAITING FOR YOU",
-            value: pending.length,
-            note: "Your review keeps things moving",
-            icon: ShieldCheck,
-            section: "activity" as const,
-            tint: colors.lavender,
-          },
-        ].map((item) => (
-          <Pressable
-            key={item.label}
-            accessibilityRole="button"
-            onPress={() => navigate(item.section)}
-            style={{ flex: 1, minWidth: 180 }}
-          >
-            <Card style={{ padding: 21, height: 126 }}>
-              <View style={s.between}>
-                <Text style={[s.label, { fontSize: 9, letterSpacing: 1 }]}>{item.label}</Text>
-                <View
-                  style={[
-                    s.iconBox,
-                    { width: 31, height: 31, borderRadius: 10, backgroundColor: item.tint },
-                  ]}
-                >
-                  <item.icon size={15} color={colors.text} />
-                </View>
-              </View>
-              <Text style={{ fontSize: 29, color: colors.text, letterSpacing: -1, marginTop: -2 }}>
-                {String(item.value).padStart(2, "0")}
-              </Text>
-              <Text style={[s.small, { fontSize: 10, marginTop: 3 }]}>{item.note}</Text>
-            </Card>
-          </Pressable>
-        ))}
-      </View>
-      <View style={{ flexDirection: wide ? "row" : "column", gap: 22 }}>
-        <Card style={{ flex: 1 }}>
-          <SectionHeading
-            title="On your calendar"
-            action="Full calendar"
-            onPress={() => navigate("calendar")}
-          />
-          {events.length ? (
-            events.slice(0, 3).map((e, i) => <AgendaRow key={e.id} event={e} index={i} />)
-          ) : (
-            <Empty
-              icon={CalendarDays}
-              title="Some breathing room"
-              detail="No events scheduled today."
-            />
-          )}
-          <Pressable
-            onPress={() => open({ type: "event" })}
-            style={[
-              s.row,
-              {
-                gap: 8,
-                paddingTop: 15,
-                marginTop: 9,
-                borderTopWidth: 1,
-                borderTopColor: colors.line,
-              },
-            ]}
-          >
-            <Plus size={15} color={colors.muted} />
-            <Text style={s.small}>Make time for something</Text>
-          </Pressable>
-        </Card>
-        <Card style={{ flex: 1 }}>
-          <SectionHeading
-            title="From your inbox"
-            action="Open mail"
-            onPress={() => navigate("mail")}
-          />
-          {w.mail.length ? (
-            w.mail.slice(0, 3).map((m, i) => (
-              <Pressable
-                key={m.id}
-                onPress={() => open({ type: "mail", mail: m })}
-                style={[
-                  s.row,
-                  {
-                    gap: 12,
-                    paddingVertical: 13,
-                    borderTopWidth: i ? 1 : 0,
-                    borderTopColor: colors.line,
-                  },
-                ]}
-              >
-                <Avatar name={m.sender} index={i} />
-                <View style={{ flex: 1, gap: 3 }}>
-                  <View style={s.between}>
-                    <Text style={[s.text, { fontSize: 12, fontWeight: "600" }]}>{m.sender}</Text>
-                    <Text style={[s.small, { fontSize: 10 }]}>{timeLabel(m.date)}</Text>
-                  </View>
-                  <Text numberOfLines={1} style={[s.text, { fontSize: 12, lineHeight: 18 }]}>
-                    {m.subject}
-                  </Text>
-                  <Text numberOfLines={1} style={[s.small, { fontSize: 11 }]}>
-                    {m.body.replace(/\n/g, " ")}
-                  </Text>
-                </View>
-                {m.unread && (
-                  <View
-                    style={{ width: 5, height: 5, borderRadius: 4, backgroundColor: "#78ABD0" }}
-                  />
-                )}
-              </Pressable>
-            ))
-          ) : (
-            <Empty
-              icon={Inbox}
-              title="Inbox is quiet"
-              detail="Connect Google to bring your messages here."
-            />
-          )}
-        </Card>
-      </View>
-      <View style={{ flexDirection: wide ? "row" : "column", gap: 22 }}>
-        <Card style={{ flex: 1, backgroundColor: "#F0F0E7" }}>
-          <SectionHeading title="A hand with the little things" />
-          <Text style={[s.muted, { marginBottom: 15 }]}>
-            Start with a thought. We’ll take it from there.
-          </Text>
-          {[
-            "What needs my attention today?",
-            "Help me catch up on my inbox",
-            "Show my recent documents",
-          ].map((prompt) => (
-            <Pressable
-              key={prompt}
-              onPress={() => ask(prompt)}
-              style={[
-                s.between,
-                { borderTopWidth: 1, borderTopColor: "#E1E2D9", paddingVertical: 13 },
-              ]}
-            >
-              <Text style={[s.text, { fontSize: 12 }]}>{prompt}</Text>
-              <ArrowUpRight size={15} color={colors.muted} />
-            </Pressable>
-          ))}
-        </Card>
-        <Card style={{ flex: 1 }}>
-          <SectionHeading
-            title={pending.length ? "Ready for your review" : "Recent activity"}
-            action="View all"
-            onPress={() => navigate("activity")}
-          />
-          {pending.length
-            ? pending
-                .slice(0, 3)
-                .map((a) => (
-                  <LinkRow
-                    key={a.id}
-                    title={a.title}
-                    detail="Prepared · waiting for your approval"
-                    onPress={() => open({ type: "review", action: a })}
-                    icon={ShieldCheck}
-                    tint={colors.lavender}
-                  />
-                ))
-            : w.activity.slice(0, 3).map((a) => (
-                <View key={a.id} style={[s.row, { gap: 13, paddingVertical: 12 }]}>
-                  <View
-                    style={[s.iconBox, { width: 32, height: 32, backgroundColor: colors.green }]}
-                  >
-                    <Check size={14} color={colors.text} />
-                  </View>
-                  <View style={{ flex: 1 }}>
-                    <Text style={[s.text, { fontSize: 12 }]}>{a.title}</Text>
-                    <Text style={s.small}>{relativeDate(a.date)}</Text>
-                  </View>
-                </View>
-              ))}
-          {!pending.length && !w.activity.length && (
-            <Text style={s.muted}>
-              Your workspace is ready. Things you do here will appear in your activity.
-            </Text>
-          )}
-        </Card>
-      </View>
-    </View>
-  );
-}
 function Avatar({ name, index = 0 }: { name: string; index?: number }) {
   return (
     <View
diff --git a/packages/domain/src/index.ts b/packages/domain/src/index.ts
index 20008d2be..0bb09f7e8 100644
--- a/packages/domain/src/index.ts
+++ b/packages/domain/src/index.ts
@@ -202,11 +202,4 @@ export interface Workspace {
   };
 }
 
-/** Provider-independent boundary: OpenBot/AG-UI runs never dictate presentation. */
-export interface ExecutionBackend {
-  readonly kind: "standalone" | "openbot";
-  readonly capabilities: readonly string[];
-  health(): Promise<{ available: boolean; detail: string }>;
-}
-
 export type { ComputerCommand, ComputerDirectory, ComputerSnapshot } from "./computer.ts";