Fix clippy warnings across CLI codebase (#654)

* Fix clippy warnings across CLI codebase

Fixes #653

* Fix remaining items_after_test_module clippy warnings

Move functions defined after `mod tests` blocks to before the test
modules in recording.rs and webdriver/client.rs.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: ctate <366502+ctate@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

cli/src/native/cdp/lightpanda.rs

@@ -23,22 +23,13 @@ impl Drop for LightpandaProcess {
     }
 }
 
+#[derive(Default)]
 pub struct LightpandaLaunchOptions {
     pub executable_path: Option<String>,
     pub proxy: Option<String>,
     pub port: Option<u16>,
 }
 
-impl Default for LightpandaLaunchOptions {
-    fn default() -> Self {
-        Self {
-            executable_path: None,
-            proxy: None,
-            port: None,
-        }
-    }
-}
-
 pub fn find_lightpanda() -> Option<PathBuf> {
     // Check PATH via `which`
     #[cfg(unix)]
@@ -89,9 +80,7 @@ pub fn find_lightpanda() -> Option<PathBuf> {
     None
 }
 
-pub fn launch_lightpanda(
-    options: &LightpandaLaunchOptions,
-) -> Result<LightpandaProcess, String> {
+pub fn launch_lightpanda(options: &LightpandaLaunchOptions) -> Result<LightpandaProcess, String> {
     let binary_path = match &options.executable_path {
         Some(p) => PathBuf::from(p),
         None => find_lightpanda().ok_or(