feat(client): add config option keys.scroll_exits (#1744)

* feat(client): add config option keys.scroll_exits

If the config option is set the `false`, using the up/down key won't
exit the TUI when scrolled past the first/last entry.

Example:

```
[keys]
scroll_exits = false
```

The default is `true`, which is the current behavior.

* Update atuin/src/command/client/search/interactive.rs

Co-authored-by: Koichi Murase <myoga.murase@gmail.com>

* refactor: add option to config.toml

---------

Co-authored-by: Koichi Murase <myoga.murase@gmail.com>

atuin-client/config.toml

@@ -174,3 +174,7 @@ enter_accept = true
 
 ## Set commands that will be completely ignored from stats
 #ignored_commands = ["cd", "ls", "vi"]
+
+[keys]
+# Defaults to true. If disabled, using the up/down key won't exit the TUI when scrolled past the first/last entry.
+# scroll_exits = false

atuin-client/src/settings.rs

@@ -306,6 +306,11 @@ pub struct Sync {
     pub records: bool,
 }
 
+#[derive(Clone, Debug, Deserialize, Default)]
+pub struct Keys {
+    pub scroll_exits: bool,
+}
+
 #[derive(Clone, Debug, Deserialize)]
 pub struct Settings {
     pub dialect: Dialect,
@@ -360,6 +365,9 @@ pub struct Settings {
     #[serde(default)]
     pub sync: Sync,
 
+    #[serde(default)]
+    pub keys: Keys,
+
     // This is automatically loaded when settings is created. Do not set in
     // config! Keep secrets and settings apart.
     #[serde(skip)]
@@ -588,6 +596,7 @@ impl Settings {
             // New users will get the new default, that is more similar to what they are used to.
             .set_default("enter_accept", false)?
             .set_default("sync.records", false)?
+            .set_default("keys.scroll_exits", true)?
             .set_default("keymap_mode", "emacs")?
             .set_default("keymap_mode_shell", "auto")?
             .set_default("keymap_cursor", HashMap::<String, String>::new())?

atuin/src/command/client/search/interactive.rs

@@ -225,7 +225,7 @@ impl State {
         is_down: bool,
     ) -> InputAction {
         if is_down {
-            if enable_exit && self.results_state.selected() == 0 {
+            if settings.keys.scroll_exits && enable_exit && self.results_state.selected() == 0 {
                 return Self::handle_key_exit(settings);
             }
             self.scroll_down(1);