feat: add admin CLI for project management

- User management (list, create, delete, reset-password)
- Data CRUD for all 32 collections
- Import/export with JSON support
- Worker/queue management (status, jobs, retry, trigger)
- Webhook management (list, test, deliveries, retry)
- Agent management (list, CRUD, tasks, trigger, activity)
- Health diagnostics (check, errors, stats)
- JSON output mode (--json flag)
- Run via: npm run cli -- <command>

packages/cli/index.ts

@@ -0,0 +1,67 @@
+#!/usr/bin/env node
+
+import { parseArgs } from './lib/args.js';
+import { printError, printHeader, printJson } from './lib/output.js';
+
+const commands: Record<string, () => Promise<void>> = {
+  user: () => import('./commands/user.js').then((m) => m.default()),
+  data: () => import('./commands/data.js').then((m) => m.default()),
+  worker: () => import('./commands/worker.js').then((m) => m.default()),
+  health: () => import('./commands/health.js').then((m) => m.default()),
+  webhook: () => import('./commands/webhook.js').then((m) => m.default()),
+  agent: () => import('./commands/agent.js').then((m) => m.default()),
+};
+
+function showHelp(): void {
+  printHeader('Project E Admin CLI');
+  console.log(`
+Usage: npx tsx packages/cli/index.ts <command> [subcommand] [options]
+
+Commands:
+  user       User management (list, create, delete, reset-password)
+  data       Data CRUD and import/export for all collections
+  worker     Queue and worker management
+  health     System health and diagnostics
+  webhook    Webhook management and testing
+  agent      Agent management and task triggers
+
+Global Options:
+  --json     Output results as JSON
+  --help     Show help for a command
+
+Examples:
+  npx tsx packages/cli/index.ts health check
+  npx tsx packages/cli/index.ts user list --json
+  npx tsx packages/cli/index.ts data list projects --limit 10
+  npx tsx packages/cli/index.ts worker status
+`);
+}
+
+async function main(): Promise<void> {
+  const { command, flags } = parseArgs(process.argv);
+
+  if (!command || command === 'help' || hasFlag(flags, 'help')) {
+    showHelp();
+    return;
+  }
+
+  const handler = commands[command];
+  if (!handler) {
+    printError(`Unknown command: ${command}`);
+    console.log('Run with --help to see available commands.');
+    process.exit(1);
+  }
+
+  try {
+    await handler();
+  } catch (error) {
+    printError(error instanceof Error ? error.message : String(error));
+    process.exit(1);
+  }
+}
+
+function hasFlag(flags: Record<string, string | boolean>, name: string): boolean {
+  return flags[name] !== undefined;
+}
+
+main();