fix(notfiles,nothooks): validate package on unlink; batch state I/O in HookRunner

Closes #10, closes #13

crates/nothooks/src/runner.rs

@@ -1,6 +1,6 @@
 use crate::HookResult;
 use crate::state::HookState;
-use notcore::{HookPhase, HookSpec};
+use notcore::{HookPhase, HookSpec, Report, StepStatus};
 use std::path::PathBuf;
 use std::process::Command;
 
@@ -46,9 +46,41 @@ impl HookRunner {
         }
     }
 
-    pub fn run_hook(&self, spec: &HookSpec) -> HookResult {
+    /// Run all hooks in `hooks` that match `phase`.
+    ///
+    /// State is loaded once before iterating and saved once at the end (only if
+    /// at least one Setup hook completed successfully), avoiding N file reads
+    /// and writes per phase.
+    pub fn run_phase(&self, hooks: &[HookSpec], phase: &HookPhase) -> Report {
         let mut state = HookState::load(&self.state_dir).unwrap_or_default();
+        let mut state_dirty = false;
+        let mut report = Report::default();
 
+        for spec in hooks.iter().filter(|h| &h.phase == phase) {
+            let result = self.run_hook_with_state(spec, &mut state, &mut state_dirty);
+            let status = match &result {
+                HookResult::Ok => StepStatus::Ok,
+                HookResult::Skipped => StepStatus::Skipped,
+                HookResult::Failed(msg) => StepStatus::Failed(msg.clone()),
+            };
+            report.add(&spec.name, status);
+        }
+
+        if state_dirty {
+            let _ = state.save(&self.state_dir);
+        }
+
+        report
+    }
+
+    /// Execute a single hook, using the caller-owned `state` and `dirty` flag
+    /// instead of loading/saving per invocation.
+    fn run_hook_with_state(
+        &self,
+        spec: &HookSpec,
+        state: &mut HookState,
+        state_dirty: &mut bool,
+    ) -> HookResult {
         if spec.phase == HookPhase::Setup && !self.force && state.is_done(&spec.name) {
             return HookResult::Skipped;
         }
@@ -63,7 +95,7 @@ impl HookRunner {
             Ok(status) if status.success() => {
                 if spec.phase == HookPhase::Setup {
                     state.mark_done(&spec.name);
-                    let _ = state.save(&self.state_dir);
+                    *state_dirty = true;
                 }
                 HookResult::Ok
             }
@@ -71,4 +103,18 @@ impl HookRunner {
             Err(e) => HookResult::Failed(e.to_string()),
         }
     }
+
+    /// Run a single hook with its own load/save cycle.
+    ///
+    /// Prefer [`HookRunner::run_phase`] when running multiple hooks to avoid
+    /// repeated state I/O.
+    pub fn run_hook(&self, spec: &HookSpec) -> HookResult {
+        let mut state = HookState::load(&self.state_dir).unwrap_or_default();
+        let mut state_dirty = false;
+        let result = self.run_hook_with_state(spec, &mut state, &mut state_dirty);
+        if state_dirty {
+            let _ = state.save(&self.state_dir);
+        }
+        result
+    }
 }