feat: make each plugin an npm workspace built by a termix-plugin CLI

plugins/ssh-terminal/src/backend/index.ts

@@ -0,0 +1,21 @@
+import type { PluginContext } from "@termix/plugin-sdk/backend";
+import {
+  TERMINAL_WS_PORT,
+  sessionManager,
+  startTerminalServer,
+  stopTerminalServer,
+} from "../../../../src/backend/hosts/terminal/index.js";
+
+export async function activate(ctx: PluginContext) {
+  await startTerminalServer();
+
+  // Published so collab and session-sharing can reach live sessions without
+  // importing a plugin. Revoked automatically when this plugin is disabled.
+  ctx.registry.provide("terminal.sessions", sessionManager ?? null);
+
+  ctx.log.info(`SSH terminal listening on ${TERMINAL_WS_PORT ?? 30002}`);
+}
+
+export async function deactivate() {
+  await stopTerminalServer();
+}