refactor: de-duplicate channel runtime and payload helpers

src/plugin-sdk/run-command.ts

@@ -0,0 +1,45 @@
+import { runCommandWithTimeout } from "../process/exec.js";
+
+export type PluginCommandRunResult = {
+  code: number;
+  stdout: string;
+  stderr: string;
+};
+
+export type PluginCommandRunOptions = {
+  argv: string[];
+  timeoutMs: number;
+  cwd?: string;
+  env?: NodeJS.ProcessEnv;
+};
+
+export async function runPluginCommandWithTimeout(
+  options: PluginCommandRunOptions,
+): Promise<PluginCommandRunResult> {
+  const [command] = options.argv;
+  if (!command) {
+    return { code: 1, stdout: "", stderr: "command is required" };
+  }
+
+  try {
+    const result = await runCommandWithTimeout(options.argv, {
+      timeoutMs: options.timeoutMs,
+      cwd: options.cwd,
+      env: options.env,
+    });
+    const timedOut = result.termination === "timeout" || result.termination === "no-output-timeout";
+    return {
+      code: result.code ?? 1,
+      stdout: result.stdout,
+      stderr: timedOut
+        ? result.stderr || `command timed out after ${options.timeoutMs}ms`
+        : result.stderr,
+    };
+  } catch (error) {
+    return {
+      code: 1,
+      stdout: "",
+      stderr: error instanceof Error ? error.message : String(error),
+    };
+  }
+}