feat(nothooks): add phase-aware hook runner with setup-hook state tracking

crates/nothooks/tests/integration.rs

@@ -0,0 +1,61 @@
+use std::fs;
+use tempfile::TempDir;
+use nothooks::{HookResult, HookRunner};
+use notcore::{HookPhase, HookSpec};
+
+fn make_hook_script(dir: &TempDir, name: &str, content: &str) -> HookSpec {
+    let path = dir.path().join(format!("{name}.nu"));
+    fs::write(&path, content).unwrap();
+    HookSpec {
+        name: name.to_string(),
+        script: path.to_str().unwrap().to_string(),
+        phase: HookPhase::Dot,
+    }
+}
+
+#[test]
+fn test_hook_success() {
+    let dir = TempDir::new().unwrap();
+    let spec = make_hook_script(&dir, "ok-hook", "print hello");
+    let runner = HookRunner::new(dir.path().to_path_buf());
+    let result = runner.run_hook(&spec);
+    assert!(matches!(result, HookResult::Ok));
+}
+
+#[test]
+fn test_hook_failure() {
+    let dir = TempDir::new().unwrap();
+    let spec = make_hook_script(&dir, "fail-hook", "exit 1\n");
+    let runner = HookRunner::new(dir.path().to_path_buf());
+    let result = runner.run_hook(&spec);
+    assert!(matches!(result, HookResult::Failed(_)));
+}
+
+#[test]
+fn test_setup_hook_skipped_on_rerun() {
+    let dir = TempDir::new().unwrap();
+    let mut spec = make_hook_script(&dir, "setup-hook", "print ran");
+    spec.phase = notcore::HookPhase::Setup;
+
+    let runner = HookRunner::new(dir.path().to_path_buf());
+    let r1 = runner.run_hook(&spec);
+    assert!(matches!(r1, HookResult::Ok));
+
+    // Second run — should be skipped
+    let r2 = runner.run_hook(&spec);
+    assert!(matches!(r2, HookResult::Skipped));
+}
+
+#[test]
+fn test_setup_hook_force_reruns() {
+    let dir = TempDir::new().unwrap();
+    let mut spec = make_hook_script(&dir, "force-hook", "print ran");
+    spec.phase = notcore::HookPhase::Setup;
+
+    let runner = HookRunner::new(dir.path().to_path_buf());
+    runner.run_hook(&spec);
+
+    let runner2 = HookRunner::with_force(dir.path().to_path_buf());
+    let r2 = runner2.run_hook(&spec);
+    assert!(matches!(r2, HookResult::Ok));
+}