refactor: render the shell in the client (#3487)

* feat: add opt-in client-rendered shell

* feat: add client-owned shell mouse controls

* feat: complete client-owned shell chrome

* feat: add client-owned shell settings and notifications

* feat: run client shell custom commands

* feat: render popup terminals in client shell

* feat: add client-owned scrollback and copy mode

* fix: preserve client worktree trust defaults

* feat: render startup diagnostics in client shell

* feat: render onboarding in client shell

* feat: render product announcements in client shell

* feat: render release notes in client shell

* feat: render mobile switcher in client shell

* feat: render kitty graphics in client shell

* fix: preserve client shell lifecycle coherence

* refactor: route client shell commands through endpoint connections

* refactor: make the client-rendered shell the default

* refactor: remove monolithic launch mode

* refactor: complete client-rendered shell cutover

* perf: retain client pane surface updates

* perf: scale retained pane surface updates

* perf: remove remote pane input latency

* test: make client shell checks platform-independent

* fix: prevent client timer starvation

* test: fix client shell platform gates

* test: accept retained surfaces in cross-area checks

* test: make client mode assertions platform-neutral

* fix: badge only outdated integrations

1 files changed, 0 insertions, 128 deletions

diff --git a/src/app/config_io.rs b/src/app/config_io.rs
deleted file mode 100644
index 9f7445b9..00000000
--- a/src/app/config_io.rs
+++ /dev/null
@@ -1,128 +0,0 @@
-use super::App;
-
-impl App {
-    pub(super) fn update_config_file<F>(&mut self, error_context: &str, update: F) -> bool
-    where
-        F: FnOnce(&str) -> String,
-    {
-        #[cfg(test)]
-        if std::env::var_os(crate::config::CONFIG_PATH_ENV_VAR).is_none() {
-            return false;
-        }
-
-        let path = crate::config::config_path();
-        if let Some(parent) = path.parent() {
-            if let Err(err) = std::fs::create_dir_all(parent) {
-                crate::logging::config_write_failed(&path, error_context, &err.to_string());
-                self.state.config_diagnostic =
-                    Some(format!("failed to save {error_context}: {err}"));
-                self.config_diagnostic_deadline =
-                    Some(std::time::Instant::now() + std::time::Duration::from_secs(5));
-                return false;
-            }
-        }
-
-        let content = std::fs::read_to_string(&path).unwrap_or_default();
-        let new_content = update(&content);
-        if let Err(err) = std::fs::write(&path, new_content) {
-            crate::logging::config_write_failed(&path, error_context, &err.to_string());
-            self.state.config_diagnostic = Some(format!("failed to save {error_context}: {err}"));
-            self.config_diagnostic_deadline =
-                Some(std::time::Instant::now() + std::time::Duration::from_secs(5));
-            return false;
-        }
-
-        true
-    }
-
-    pub(super) fn mark_onboarding_complete(&mut self) {
-        self.update_config_file("onboarding setting", |content| {
-            crate::config::upsert_top_level_bool(content, "onboarding", false)
-        });
-    }
-
-    pub(super) fn save_theme(&mut self, name: &str) {
-        if self.update_config_file("theme", |content| {
-            let content = crate::config::upsert_section_value(
-                content,
-                "theme",
-                "name",
-                &format!("\"{name}\""),
-            );
-            crate::config::upsert_section_bool(&content, "theme", "auto_switch", false)
-        }) {
-            self.apply_config_from_disk(false);
-        }
-    }
-
-    pub(super) fn save_status_indicators(&mut self, style: crate::config::StatusIndicatorStyle) {
-        if self.update_config_file("status indicators", |content| {
-            crate::config::upsert_section_value(
-                content,
-                "ui",
-                "status_indicators",
-                &format!("\"{}\"", style.as_str()),
-            )
-        }) {
-            self.apply_config_from_disk(false);
-        }
-    }
-
-    pub(super) fn save_sound(&mut self, enabled: bool) {
-        if self.update_config_file("sound setting", |content| {
-            crate::config::upsert_section_bool(content, "ui.sound", "enabled", enabled)
-        }) {
-            self.apply_config_from_disk(false);
-        }
-    }
-
-    pub(super) fn save_toast_delivery(&mut self, delivery: crate::config::ToastDelivery) {
-        let value = match delivery {
-            crate::config::ToastDelivery::Off => "\"off\"",
-            crate::config::ToastDelivery::Herdr => "\"herdr\"",
-            crate::config::ToastDelivery::Terminal => "\"terminal\"",
-            crate::config::ToastDelivery::System => "\"system\"",
-        };
-        if self.update_config_file("toast setting", |content| {
-            let content =
-                crate::config::upsert_section_value(content, "ui.toast", "delivery", value);
-            crate::config::remove_section_key(&content, "ui.toast", "enabled")
-        }) {
-            self.apply_config_from_disk(false);
-        }
-    }
-
-    pub(super) fn save_agent_border_labels(&mut self, enabled: bool) {
-        if self.update_config_file("agent border labels", |content| {
-            crate::config::upsert_section_bool(
-                content,
-                "ui",
-                "show_agent_labels_on_pane_borders",
-                enabled,
-            )
-        }) {
-            self.apply_config_from_disk(false);
-        }
-    }
-
-    pub(super) fn save_agent_panel_sort(&mut self, sort: crate::app::state::AgentPanelSort) {
-        let value = match sort {
-            crate::app::state::AgentPanelSort::Spaces => {
-                crate::config::AgentPanelSortConfig::Spaces.as_str()
-            }
-            crate::app::state::AgentPanelSort::Priority => {
-                crate::config::AgentPanelSortConfig::Priority.as_str()
-            }
-        };
-        if self.update_config_file("agent panel sort", |content| {
-            crate::config::upsert_section_value(
-                content,
-                "ui",
-                "agent_panel_sort",
-                &format!("\"{value}\""),
-            )
-        }) {
-            self.apply_config_from_disk(false);
-        }
-    }
-}