chore: move plugins to their own repos and drop the plugins folder

scripts/build-plugins.cjs

@@ -3,14 +3,12 @@
  *
  * getBundledPluginsDir() in src/backend/plugins/paths.ts resolves
  * dist/backend/backend/plugins -> dist/plugins, which is where this writes.
- * A workspace plugin is built from plugins/<id>; a tmxplug plugin is
- * downloaded (or read from a path), checked against its pinned sha256 and
- * unpacked. Either way only what a server needs at runtime lands there.
+ * Each .tmxplug is downloaded (or read from a path), checked against its
+ * pinned sha256 and unpacked.
  */
 
 const fs = require("node:fs");
 const path = require("node:path");
-const { execFileSync } = require("node:child_process");
 const {
   loadBundledPlugins,
   fetchArtifact,
@@ -18,59 +16,18 @@ const {
 } = require("./lib/bundled-plugins.cjs");
 
 const root = path.resolve(__dirname, "..");
-const source = path.join(root, "plugins");
 const destination = path.join(root, "dist", "plugins");
-const cli = path.join(root, "packages", "plugin-sdk", "cli", "index.mjs");
-
-// Same list as a .tmxplug, see packages/plugin-sdk/cli/lib/tmxplug.mjs.
-const SHIPPED = [
-  "manifest.json",
-  "dist",
-  "locales",
-  "migrations",
-  "README.md",
-  "CHANGELOG.json",
-  "icon.svg",
-];
-
-function stageWorkspace(id) {
-  const pluginDir = path.join(source, id);
-
-  execFileSync(process.execPath, [cli, "build"], {
-    cwd: pluginDir,
-    stdio: "inherit",
-  });
-
-  if (!fs.existsSync(path.join(pluginDir, "dist", "backend.js"))) {
-    throw new Error(`${id} produced no dist/backend.js`);
-  }
-
-  const outDir = path.join(destination, id);
-  fs.mkdirSync(outDir, { recursive: true });
-  for (const entry of SHIPPED) {
-    const from = path.join(pluginDir, entry);
-    if (!fs.existsSync(from)) continue;
-    fs.cpSync(from, path.join(outDir, entry), { recursive: true });
-  }
-}
 
 async function main() {
   const plugins = loadBundledPlugins(root);
 
   fs.rmSync(destination, { recursive: true, force: true });
+  fs.mkdirSync(destination, { recursive: true });
 
   for (const plugin of plugins) {
-    if (plugin.source === "workspace") {
-      stageWorkspace(plugin.id);
-    } else {
-      const buffer = await fetchArtifact(plugin, root);
-      await extractArtifact(
-        buffer,
-        path.join(destination, plugin.id),
-        plugin.id,
-      );
-      console.log(`unpacked ${plugin.id}`);
-    }
+    const buffer = await fetchArtifact(plugin, root);
+    await extractArtifact(buffer, path.join(destination, plugin.id), plugin.id);
+    console.log(`unpacked ${plugin.id}`);
   }
 
   console.log(