feat(cli): add branch push check before PR creation

index.ts

@@ -23,6 +23,8 @@ import type { Config } from "./src/types";
 import {
   getDefaultBranch,
   getBranchName,
+  getBranchPushStatus,
+  pushCurrentBranch,
   getBranchCommits,
   getBranchDiff,
   detectPlatform,
@@ -524,6 +526,30 @@ async function handlePR(draft: boolean): Promise<void> {
     `  ${commits.length} commit${commits.length > 1 ? "s" : ""} on this branch`,
   );
 
+  const pushStatus = await getBranchPushStatus();
+  if (!pushStatus.pushed) {
+    const target = pushStatus.upstream ?? `origin/${branchName}`;
+    const answer = await ask(
+      `  Branch is not pushed to ${CYAN}${target}${RESET}. Push now? [${GREEN}Y${RESET}/n] `,
+    );
+
+    if (answer.toLowerCase() === "n") {
+      console.log("  Aborted.");
+      return;
+    }
+
+    console.log(`  Pushing ${CYAN}${branchName}${RESET}...`);
+    try {
+      await pushCurrentBranch(branchName, pushStatus.upstream);
+      console.log(`  ${GREEN}Pushed ${branchName}.${RESET}`);
+    } catch (err) {
+      console.error(
+        `  ${RED}Push failed: ${err instanceof Error ? err.message : err}${RESET}`,
+      );
+      process.exit(1);
+    }
+  }
+
   const diff = await getBranchDiff(baseBranch);
   if (!diff) {
     console.error(`  ${RED}Error: No diff from base branch.${RESET}`);

src/pr.ts

@@ -25,6 +25,38 @@ export async function getBranchName(): Promise<string> {
   return result.trim();
 }
 
+export async function getBranchPushStatus(): Promise<{
+  pushed: boolean;
+  upstream: string | null;
+}> {
+  try {
+    const upstream = (await Bun.$`git rev-parse --abbrev-ref --symbolic-full-name @{u}`.quiet().text()).trim();
+    const localHead = (await Bun.$`git rev-parse HEAD`.quiet().text()).trim();
+    const remoteHead = (await Bun.$`git rev-parse @{u}`.quiet().text()).trim();
+    return { pushed: localHead === remoteHead, upstream };
+  } catch {
+    return { pushed: false, upstream: null };
+  }
+}
+
+export async function pushCurrentBranch(branch: string, upstream: string | null): Promise<void> {
+  const args = upstream
+    ? ["push"]
+    : ["push", "-u", "origin", branch];
+
+  const proc = Bun.spawn(["git", ...args], {
+    stdout: "pipe",
+    stderr: "pipe",
+  });
+  const exitCode = await proc.exited;
+  const stdout = await new Response(proc.stdout).text();
+  const stderr = await new Response(proc.stderr).text();
+
+  if (exitCode !== 0) {
+    throw new Error(stderr.trim() || stdout.trim() || `git push failed (exit code ${exitCode})`);
+  }
+}
+
 export async function getBranchCommits(base: string): Promise<string[]> {
   try {
     const result =