chore: add auto-push git hook

.githooks/post-commit

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+branch=$(git symbolic-ref --quiet --short HEAD 2>/dev/null)
+if [ -z "$branch" ]; then
+  echo "[post-commit] Detached HEAD; skipping auto-push."
+  exit 0
+fi
+
+if git rev-parse --abbrev-ref --symbolic-full-name "@{upstream}" >/dev/null 2>&1; then
+  echo "[post-commit] Pushing $branch to upstream..."
+  git push
+  push_status=$?
+else
+  if git remote get-url origin >/dev/null 2>&1; then
+    echo "[post-commit] No upstream configured; pushing $branch to origin..."
+    git push -u origin "$branch"
+    push_status=$?
+  else
+    echo "[post-commit] No upstream or origin remote; skipping auto-push."
+    exit 0
+  fi
+fi
+
+if [ "$push_status" -ne 0 ]; then
+  echo "[post-commit] Auto-push failed with exit code $push_status. Commit was created locally."
+fi
+
+exit 0