add ci checker and solve warnings

ci-check.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+echo "=== cargo fmt --check ==="
+cargo fmt --check
+
+echo ""
+echo "=== cargo clippy -- -D warnings ==="
+cargo clippy -- -D warnings
+
+echo ""
+echo "=== cargo test ==="
+cargo test
+
+echo ""
+echo "All CI checks passed."

src/app/mod.rs

@@ -185,10 +185,7 @@ impl App {
 
         // Validate any stored token at startup. If the /user endpoint returns 401,
         // the token is stale – clear it so subsequent requests don't carry a bad header.
-        let auth_user = match github.fetch_authenticated_user() {
-            Ok(user) => user,
-            Err(_) => None,
-        };
+        let auth_user: Option<String> = github.fetch_authenticated_user().unwrap_or_default();
         if auth_user.is_none() && token.is_some() {
             log::warn!("stored token rejected by GitHub, clearing it");
             let _ = auth::clear_token();

src/cli/helpers.rs

@@ -110,8 +110,7 @@ pub fn resolve_full_name(repo: &str) -> Result<String> {
 // ── API helpers ─────────────────────────────────────────────────────────
 
 pub fn handle_api_error(full_name: &str, e: &anyhow::Error) -> String {
-    let msg = e
-        .downcast_ref::<GitHubError>()
+    e.downcast_ref::<GitHubError>()
         .map(|gh_err| match gh_err {
             GitHubError::Api { status, body } if *status == 404 || body.contains("Not Found") => {
                 format!("repository '{full_name}' not found on GitHub")
@@ -128,8 +127,7 @@ pub fn handle_api_error(full_name: &str, e: &anyhow::Error) -> String {
             }
             _ => format!("{gh_err}"),
         })
-        .unwrap_or_else(|| format!("{e}"));
-    msg
+        .unwrap_or_else(|| format!("{e}"))
 }
 
 pub fn make_client() -> Result<Arc<dyn GitProvider>> {