merge: wave 2 executor (01-02) into main

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

paperclip-reference/packages/plugins/examples/plugin-authoring-smoke-example/esbuild.config.mjs

@@ -0,0 +1,17 @@
+import esbuild from "esbuild";
+import { createPluginBundlerPresets } from "@paperclipai/plugin-sdk/bundlers";
+
+const presets = createPluginBundlerPresets({ uiEntry: "src/ui/index.tsx" });
+const watch = process.argv.includes("--watch");
+
+const workerCtx = await esbuild.context(presets.esbuild.worker);
+const manifestCtx = await esbuild.context(presets.esbuild.manifest);
+const uiCtx = await esbuild.context(presets.esbuild.ui);
+
+if (watch) {
+  await Promise.all([workerCtx.watch(), manifestCtx.watch(), uiCtx.watch()]);
+  console.log("esbuild watch mode enabled for worker, manifest, and ui");
+} else {
+  await Promise.all([workerCtx.rebuild(), manifestCtx.rebuild(), uiCtx.rebuild()]);
+  await Promise.all([workerCtx.dispose(), manifestCtx.dispose(), uiCtx.dispose()]);
+}