refactor: new design — sidecar services, moderator Gateway client, tool execute API

- Replace standalone no-reply-api Docker service with unified sidecar (services/main.mjs)
  that routes /no-reply/* and /moderator/* and starts/stops with openclaw-gateway
- Add moderator Discord Gateway client (services/moderator/index.mjs) for real-time
  MESSAGE_CREATE push instead of polling; notifies plugin via HTTP callback
- Add plugin HTTP routes (plugin/web/dirigent-api.ts) for moderator → plugin callbacks
  (wake-from-dormant, interrupt tail-match)
- Fix tool registration format: AgentTool requires execute: not handler:; factory form
  for tools needing ctx
- Rename no-reply-process.ts → sidecar-process.ts, startNoReplyApi → startSideCar
- Remove dead config fields from openclaw.plugin.json (humanList, agentList, listMode,
  channelPoliciesFile, endSymbols, waitIdentifier, multiMessage*, bypassUserIds, etc.)
- Rename noReplyPort → sideCarPort
- Remove docker-compose.yml, dev-up/down scripts, package-plugin.mjs, test-no-reply-api.mjs
- Update install.mjs: clean dist before build, copy services/, drop dead config writes
- Update README, Makefile, smoke script for new architecture

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/check-plugin-files.mjs

@@ -1,20 +1,29 @@
 import fs from 'node:fs';
 import path from 'node:path';
 
-const root = path.resolve(process.cwd(), '..');
-const pluginDir = path.join(root, 'plugin');
-const required = ['index.ts', 'rules.ts', 'openclaw.plugin.json', 'README.md', 'package.json'];
+const root = path.resolve(import.meta.dirname, '..');
+
+const checks = [
+  // Core plugin files
+  path.join(root, 'plugin', 'index.ts'),
+  path.join(root, 'plugin', 'turn-manager.ts'),
+  path.join(root, 'plugin', 'openclaw.plugin.json'),
+  path.join(root, 'plugin', 'package.json'),
+  // Sidecar
+  path.join(root, 'services', 'main.mjs'),
+  path.join(root, 'services', 'no-reply-api', 'server.mjs'),
+  path.join(root, 'services', 'moderator', 'index.mjs'),
+];
 
 let ok = true;
-for (const f of required) {
-  const p = path.join(pluginDir, f);
+for (const p of checks) {
   if (!fs.existsSync(p)) {
     ok = false;
     console.error(`missing: ${p}`);
   }
 }
 
-const manifestPath = path.join(pluginDir, 'openclaw.plugin.json');
+const manifestPath = path.join(root, 'plugin', 'openclaw.plugin.json');
 if (fs.existsSync(manifestPath)) {
   const m = JSON.parse(fs.readFileSync(manifestPath, 'utf8'));
   for (const k of ['id', 'entry', 'configSchema']) {