feat: wire 10 new tools — file_read, file_write, glob, grep, web_fetch, task CRUD, send_message, schedule_cron

- 10 new JS tool classes in src/tools/ (clean, no framework deps)
- tools/index.js: registry-based init with env toggles
- bot/index.js: 16 tool definitions + 16 handlers (was 4)
- Added glob npm dependency
- Tools: bash, file_edit, file_read, file_write, glob, grep, web_search, web_fetch, git, task_create/update/list, send_message, schedule_cron, delegate_agent, run_skill

src/tools/FileWriteTool.js

@@ -0,0 +1,22 @@
+import { logger } from '../utils/logger.js';
+import fs from 'fs-extra';
+import path from 'path';
+
+export class FileWriteTool {
+  constructor() {
+    this.name = 'file_write';
+    this.description = 'Write content to a file, creating parent directories as needed';
+  }
+
+  async execute(args) {
+    const { file_path, content } = args;
+    try {
+      const fullPath = path.resolve(file_path);
+      await fs.ensureDir(path.dirname(fullPath));
+      await fs.writeFile(fullPath, content, 'utf-8');
+      return `✅ Written ${Buffer.byteLength(content)} bytes to ${fullPath}`;
+    } catch (e) {
+      return `❌ Write error: ${e.message}`;
+    }
+  }
+}