fix: ship built opencode plugin assets

scripts/build-opencode.js

@@ -0,0 +1,24 @@
+#!/usr/bin/env node
+
+const fs = require("node:fs")
+const path = require("node:path")
+const { execFileSync } = require("node:child_process")
+
+const rootDir = path.resolve(__dirname, "..")
+const opencodeDir = path.join(rootDir, ".opencode")
+const distDir = path.join(opencodeDir, "dist")
+
+fs.rmSync(distDir, { recursive: true, force: true })
+
+const tscBin = path.join(rootDir, "node_modules", ".bin", process.platform === "win32" ? "tsc.cmd" : "tsc")
+
+if (!fs.existsSync(tscBin)) {
+  throw new Error(
+    "TypeScript compiler not found. Install root dev dependencies before publishing so .opencode/dist can be built."
+  )
+}
+
+execFileSync(tscBin, ["-p", path.join(opencodeDir, "tsconfig.json")], {
+  cwd: rootDir,
+  stdio: "inherit",
+})