Enable split navigation commands in terminal mode and restore terminal state

- Add Terminal context to split navigation commands (Next/Previous Split,
  Close Split, Increase/Decrease Split Size, Toggle Maximize Split) so they
  are available in command palette when terminal is focused
- Restore terminal mode when switching to a terminal split via next/prev
  split commands, matching the behavior of click-based split switching

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: sinelaw

src/app/mod.rs

@@ -2102,18 +2102,30 @@ impl Editor {
 
     /// Switch to next split
     pub fn next_split(&mut self) {
-        self.save_current_split_view_state();
-        self.split_manager.next_split();
-        self.restore_current_split_view_state();
+        self.switch_split(true);
         self.set_status_message("Switched to next split".to_string());
     }
 
     /// Switch to previous split
     pub fn prev_split(&mut self) {
+        self.switch_split(false);
+        self.set_status_message("Switched to previous split".to_string());
+    }
+
+    /// Common split switching logic
+    fn switch_split(&mut self, next: bool) {
         self.save_current_split_view_state();
-        self.split_manager.prev_split();
+        if next {
+            self.split_manager.next_split();
+        } else {
+            self.split_manager.prev_split();
+        }
         self.restore_current_split_view_state();
-        self.set_status_message("Switched to previous split".to_string());
+        // Enter terminal mode if switching to a terminal split
+        if self.is_terminal_buffer(self.active_buffer()) {
+            self.terminal_mode = true;
+            self.key_context = crate::input::keybindings::KeyContext::Terminal;
+        }
     }
 
     /// Save the current split's cursor state (viewport is owned by SplitViewState)

src/input/commands.rs

@@ -423,47 +423,47 @@ pub fn get_all_commands() -> Vec<Command> {
             name: "Close Split".to_string(),
             description: "Close the current split pane".to_string(),
             action: Action::CloseSplit,
-            contexts: vec![KeyContext::Normal],
+            contexts: vec![KeyContext::Normal, KeyContext::Terminal],
             custom_contexts: vec![],
             source: CommandSource::Builtin,
         },
         Command {
             name: "Next Split".to_string(),
             description: "Move focus to the next split pane".to_string(),
             action: Action::NextSplit,
-            contexts: vec![KeyContext::Normal],
+            contexts: vec![KeyContext::Normal, KeyContext::Terminal],
             custom_contexts: vec![],
             source: CommandSource::Builtin,
         },
         Command {
             name: "Previous Split".to_string(),
             description: "Move focus to the previous split pane".to_string(),
             action: Action::PrevSplit,
-            contexts: vec![KeyContext::Normal],
+            contexts: vec![KeyContext::Normal, KeyContext::Terminal],
             custom_contexts: vec![],
             source: CommandSource::Builtin,
         },
         Command {
             name: "Increase Split Size".to_string(),
             description: "Increase the size of the current split".to_string(),
             action: Action::IncreaseSplitSize,
-            contexts: vec![KeyContext::Normal],
+            contexts: vec![KeyContext::Normal, KeyContext::Terminal],
             custom_contexts: vec![],
             source: CommandSource::Builtin,
         },
         Command {
             name: "Decrease Split Size".to_string(),
             description: "Decrease the size of the current split".to_string(),
             action: Action::DecreaseSplitSize,
-            contexts: vec![KeyContext::Normal],
+            contexts: vec![KeyContext::Normal, KeyContext::Terminal],
             custom_contexts: vec![],
             source: CommandSource::Builtin,
         },
         Command {
             name: "Toggle Maximize Split".to_string(),
             description: "Maximize or restore the current split".to_string(),
             action: Action::ToggleMaximizeSplit,
-            contexts: vec![KeyContext::Normal],
+            contexts: vec![KeyContext::Normal, KeyContext::Terminal],
             custom_contexts: vec![],
             source: CommandSource::Builtin,
         },