Attempt to check if I have an SSH identity before committing

I've lost too many commit messages at this point.

lefthook.yml

@@ -1,5 +1,13 @@
 pre-commit:
   commands:
+    check-ssh-identity:
+      run: |
+        # Check if any SSH identities are available
+        if ! ssh-add -l &>/dev/null || [ "$(ssh-add -l 2>/dev/null | grep -v 'The agent has no identities.')" = "" ]; then
+          echo "Error: No SSH identities found in your SSH agent."
+          echo "Please run 'ssh-add' to add your SSH key before committing."
+          exit 1
+        fi
     gofmt:
       glob: "*.go"
       run: gofmt -w {staged_files}