Hide handoff entrypoint hint when already viewing a cloud conversation (warpdotdev#10946)

## Description
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it contains any UI changes! -->

WISOTT. This hint doesn't make sense to show if we're already in a cloud
mode conversation.;

## Testing
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- [x] I have manually tested my changes locally with `./script/run`

### Screenshots / Videos
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https://www.loom.com/share/774534f7db79460fb99f6683d2193526

## Agent Mode
- [x] Warp Agent Mode - This PR was created via Warp's AI Agent Mode

Author: harryalbert

app/src/ai/blocklist/agent_view/agent_input_footer/mod.rs

@@ -1982,6 +1982,7 @@ impl AgentInputFooter {
         &self,
         item: &AgentToolbarItemKind,
         shared_status: &SharedSessionStatus,
+        is_cloud_context: bool,
         app: &AppContext,
     ) -> Option<Box<dyn Element>> {
         let is_cloud_mode = FeatureFlag::CloudModeImageContext.is_enabled()
@@ -2061,11 +2062,7 @@ impl AgentInputFooter {
                 .is_enabled()
                 .then(|| ChildView::new(&self.fast_forward_button).finish()),
             AgentToolbarItemKind::HandoffToCloud => {
-                if !AISettings::as_ref(app).is_cloud_handoff_enabled(app) {
-                    return None;
-                }
-
-                if is_cloud_mode {
+                if !AISettings::as_ref(app).is_cloud_handoff_enabled(app) || is_cloud_context {
                     return None;
                 }
 
@@ -2155,9 +2152,15 @@ impl View for AgentInputFooter {
 
         let terminal_model = self.terminal_model.lock();
         let shared_status = terminal_model.shared_session_status();
+        let is_cloud_context = super::is_in_cloud_context(
+            terminal_model.block_list().agent_view_state(),
+            &terminal_model,
+        );
 
         for item in &left_items {
-            if let Some(element) = self.render_toolbar_item(item, shared_status, app) {
+            if let Some(element) =
+                self.render_toolbar_item(item, shared_status, is_cloud_context, app)
+            {
                 left_buttons.add_child(element);
             }
         }
@@ -2178,7 +2181,9 @@ impl View for AgentInputFooter {
             );
         } else {
             for item in &right_items {
-                if let Some(element) = self.render_toolbar_item(item, shared_status, app) {
+                if let Some(element) =
+                    self.render_toolbar_item(item, shared_status, is_cloud_context, app)
+                {
                     right_buttons.add_child(element);
                 }
             }

app/src/ai/blocklist/agent_view/agent_message_bar.rs

@@ -18,7 +18,7 @@ use crate::ai::agent::{
 use crate::ai::blocklist::agent_view::shortcuts::AgentShortcutViewModel;
 use crate::ai::blocklist::agent_view::zero_state_block::render_ambient_credits_banner;
 use crate::ai::blocklist::agent_view::{
-    agent_view_bg_fill, AgentViewController, AgentViewControllerEvent,
+    agent_view_bg_fill, is_in_cloud_context, AgentViewController, AgentViewControllerEvent,
 };
 use crate::ai::blocklist::{
     ai_brand_color, BlocklistAIContextEvent, BlocklistAIContextModel, BlocklistAIHistoryEvent,
@@ -578,10 +578,8 @@ impl MessageProvider<AgentMessageArgs<'_>> for ZeroStateMessageProducer {
             .with_is_disabled(!is_buffer_empty),
         );
 
-        let is_cloud_agent = matches!(
-            agent_view_controller.agent_view_state(),
-            AgentViewState::Active { origin, .. } if origin.is_cloud_agent()
-        );
+        let is_cloud_agent =
+            is_in_cloud_context(agent_view_controller.agent_view_state(), terminal_model);
 
         // Handoff to cloud only available for local agents.
         if !is_cloud_agent && AISettings::as_ref(app).is_ampersand_handoff_enabled(app) {

app/src/ai/blocklist/agent_view/mod.rs

@@ -31,6 +31,7 @@ use warp_core::ui::{appearance::Appearance, color::blend::Blend};
 use warpui::keymap::Keystroke;
 use warpui::{AppContext, SingletonEntity};
 
+use crate::terminal::model::TerminalModel;
 use crate::view_components::action_button::ActionButtonTheme;
 
 pub static ENTER_AGENT_VIEW_NEW_CONVERSATION_KEYSTROKE: LazyLock<Keystroke> = LazyLock::new(|| {
@@ -73,6 +74,26 @@ pub static ENTER_CLOUD_AGENT_VIEW_NEW_CONVERSATION_KEYSTROKE: LazyLock<Keystroke
         }
     });
 
+/// Returns `true` when the current pane is in a cloud or remote context where
+/// local-to-cloud handoff is not applicable. Use this to gate the `&` hint,
+/// handoff chip, `/handoff` command activation, and `&` prefix activation.
+pub fn is_in_cloud_context(
+    agent_view_state: &AgentViewState,
+    terminal_model: &TerminalModel,
+) -> bool {
+    let origin_is_cloud = matches!(
+        agent_view_state,
+        AgentViewState::Active { origin, .. }
+            if matches!(
+                origin,
+                AgentViewEntryOrigin::CloudAgent | AgentViewEntryOrigin::ThirdPartyCloudAgent
+            )
+    );
+    origin_is_cloud
+        || terminal_model.is_conversation_transcript_viewer()
+        || terminal_model.is_dummy_cloud_mode_session()
+}
+
 pub fn agent_view_bg_fill(app: &AppContext) -> Fill {
     let appearance = Appearance::as_ref(app);
     appearance.theme().surface_overlay_1()

app/src/terminal/input.rs

@@ -112,7 +112,7 @@ use crate::ai::block_context::BlockContext;
 #[cfg(all(feature = "local_fs", not(target_family = "wasm")))]
 use crate::ai::blocklist::agent_view::agent_input_footer::sort_environments_by_recency;
 use crate::ai::blocklist::agent_view::{
-    AgentInputFooter, AgentInputFooterEvent, AgentViewController,
+    is_in_cloud_context, AgentInputFooter, AgentInputFooterEvent, AgentViewController,
 };
 #[cfg(all(feature = "local_fs", not(target_family = "wasm")))]
 use crate::ai::blocklist::handoff::touched_repos::{
@@ -3850,12 +3850,19 @@ impl Input {
         let is_powershell_with_nld_enabled = self.editor.as_ref(ctx).shell_family()
             == Some(ShellFamily::PowerShell)
             && AISettings::as_ref(ctx).is_ai_autodetection_enabled(ctx);
+        let is_cloud = {
+            let terminal_model = self.model.lock();
+            is_in_cloud_context(
+                terminal_model.block_list().agent_view_state(),
+                &terminal_model,
+            )
+        };
         *edit_origin == EditOrigin::UserTyped
             && AISettings::as_ref(ctx).is_ampersand_handoff_enabled(ctx)
             && !is_powershell_with_nld_enabled
             && FeatureFlag::AgentView.is_enabled()
             && self.agent_view_controller.as_ref(ctx).is_fullscreen()
-            && self.ambient_agent_view_model().is_none()
+            && !is_cloud
             && !CLIAgentSessionsModel::as_ref(ctx).is_input_open(self.terminal_view_id)
             && self.prefix_mode(ctx) == InputPrefixMode::None
     }