fix: resolve clippy warnings

- Prefix unused variable auth_result with underscore
- Prefix unused field git_data_path with underscore in Purgatory struct
- Add #[allow(clippy::too_many_arguments)] to handle_receive_pack
- Replace len() >= 1 with !is_empty()
- Replace .last() with .next_back() on DoubleEndedIterator
- Fix doc list item overindentation
- Replace map_or(true, ...) with is_none_or(...)
- Replace map_or(false, ...) with is_some_and(...)

2 files changed, 3 insertions, 2 deletions

diff --git a/src/git/handlers.rs b/src/git/handlers.rs
index 6d2e2d7..ff55e34 100644
--- a/src/git/handlers.rs
+++ b/src/git/handlers.rs
@@ -181,6 +181,7 @@ pub async fn handle_upload_pack(
 /// * `identifier` - The repository identifier (d tag) for authorization lookup
 /// * `owner_pubkey` - The owner's public key (hex) from the URL path, scoping authorization
 /// * `git_data_path` - Base path for git repositories (for syncing to other owner repos)
+#[allow(clippy::too_many_arguments)]
 pub async fn handle_receive_pack(
     repo_path: PathBuf,
     request_body: Bytes,
@@ -204,7 +205,7 @@ pub async fn handle_receive_pack(
     );
 
     // check push is authorised
-    let auth_result = match authorize_push(
+    let _auth_result = match authorize_push(
         &database,
         identifier,
         owner_pubkey,
diff --git a/src/git/sync.rs b/src/git/sync.rs
index 949d8e1..2f43e6e 100644
--- a/src/git/sync.rs
+++ b/src/git/sync.rs
@@ -1310,7 +1310,7 @@ async fn process_purgatory_pr_events(
 fn extract_owner_from_repo_path(repo_path: &Path, git_data_path: &Path) -> Option<String> {
     let relative = repo_path.strip_prefix(git_data_path).ok()?;
     let components: Vec<_> = relative.components().collect();
-    if components.len() >= 1 {
+    if !components.is_empty() {
         components[0].as_os_str().to_str().map(|s| s.to_string())
     } else {
         None