fix: capture pre_head_sha for pending commits on session resume

apps/staged/src-tauri/src/session_commands.rs

@@ -213,24 +213,22 @@ pub fn resume_session(
         .map(|note| note.project_id);
 
     // If this session is linked to a commit, capture the current HEAD so we
-    // can detect amended commits when the session completes.
+    // can detect new or amended commits when the session completes.
+    // This applies both when the commit already has a SHA (amend case) and
+    // when it's still pending (no SHA — the previous run didn't produce a
+    // commit, so we need to detect if this resumed run does).
     let (pre_head_sha, workspace_name) =
         if let Ok(Some(commit)) = store.get_commit_by_session(&session_id) {
-            // Only bother if the commit already has a SHA (i.e. was previously completed).
-            if commit.sha.is_some() {
-                let branch = store.get_branch(&commit.branch_id).ok().flatten();
-                let ws_name = branch.as_ref().and_then(|b| b.workspace_name.clone());
-                let head = if let Some(ref ws) = ws_name {
-                    crate::blox::ws_exec(ws, &["git", "rev-parse", "HEAD"])
-                        .map(|s| s.trim().to_string())
-                        .ok()
-                } else {
-                    crate::git::get_head_sha(&working_dir).ok()
-                };
-                (head, ws_name)
+            let branch = store.get_branch(&commit.branch_id).ok().flatten();
+            let ws_name = branch.as_ref().and_then(|b| b.workspace_name.clone());
+            let head = if let Some(ref ws) = ws_name {
+                crate::blox::ws_exec(ws, &["git", "rev-parse", "HEAD"])
+                    .map(|s| s.trim().to_string())
+                    .ok()
             } else {
-                (None, None)
-            }
+                crate::git::get_head_sha(&working_dir).ok()
+            };
+            (head, ws_name)
         } else {
             (None, None)
         };