Add sleeping tab recovery

crates/ely_browser_core/src/state/commands.rs

@@ -277,11 +277,20 @@ impl BrowserCore {
                 self.crash_active_tab()?;
                 Ok(true)
             }
+            "sleep-tab" | "sleep tab" | "discard-tab" | "discard tab" => {
+                self.discard_active_tab()?;
+                Ok(true)
+            }
             "recover-tab" | "recover tab" | "recover-crashed-tab" | "recover crashed tab" => {
                 let tab_id = self.active_tab()?.id().clone();
                 self.recover_crashed_tab(&tab_id)?;
                 Ok(true)
             }
+            "wake-tab" | "wake tab" | "restore-sleeping-tab" | "restore sleeping tab" => {
+                let tab_id = self.active_tab()?.id().clone();
+                self.wake_discarded_tab(&tab_id)?;
+                Ok(true)
+            }
             "close-split-view" | "close split view" => {
                 Ok(self.close_active_saved_split_view()?.is_some())
             }

crates/ely_browser_core/src/state/tab_lifecycle.rs

@@ -20,6 +20,29 @@ impl BrowserCore {
     }
 
     pub fn recover_crashed_tab(&mut self, tab_id: &TabId) -> Result<TabId, CoreError> {
+        self.mark_tab_ready(tab_id)
+    }
+
+    pub fn discard_active_tab(&mut self) -> Result<TabId, CoreError> {
+        let tab_id = self.active_tab_id.clone();
+        self.discard_tab(&tab_id)
+    }
+
+    pub fn discard_tab(&mut self, tab_id: &TabId) -> Result<TabId, CoreError> {
+        let tab = self
+            .tabs
+            .iter_mut()
+            .find(|tab| tab.id() == tab_id)
+            .ok_or_else(|| CoreError::TabNotFound { id: tab_id.clone() })?;
+        tab.mark_discarded();
+        Ok(tab_id.clone())
+    }
+
+    pub fn wake_discarded_tab(&mut self, tab_id: &TabId) -> Result<TabId, CoreError> {
+        self.mark_tab_ready(tab_id)
+    }
+
+    fn mark_tab_ready(&mut self, tab_id: &TabId) -> Result<TabId, CoreError> {
         {
             let tab = self
                 .tabs