add review command for interactive grumpy code review of a branch

src/cli.ts

@@ -308,6 +308,29 @@ program
     if (opts.save !== false) await saveChanges(session.worktree)
   })
 
+// ── sandlot review <branch> ──────────────────────────────────────────
+
+program
+  .command("review")
+  .argument("<branch>", "branch name")
+  .description("Launch an interactive grumpy code review for a branch")
+  .action(async (branch: string) => {
+    const root = await git.repoRoot()
+    const session = await state.getSession(root, branch)
+
+    if (!session) {
+      console.error(`✖ No session found for branch "${branch}".`)
+      process.exit(1)
+    }
+
+    const spin = spinner("Starting container")
+    await vm.ensure((msg) => { spin.text = msg })
+    spin.succeed("Session ready")
+
+    const prompt = "You're a grumpy old senior software engineer. Take a look at the diff between this branch and main, then let me know your thoughts. My co-worker made these changes."
+    await vm.claude(session.worktree, { prompt })
+  })
+
 // ── sandlot close <branch> ───────────────────────────────────────────
 
 const closeAction = async (branch: string) => {