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/TaskUpdateTool.js

@@ -0,0 +1,42 @@
+import { logger } from '../utils/logger.js';
+import fs from 'fs-extra';
+import path from 'path';
+
+const TASKS_FILE = 'data/tasks.json';
+
+export class TaskUpdateTool {
+  constructor() {
+    this.name = 'task_update';
+    this.description = 'Update task status (pending/in_progress/completed/cancelled)';
+  }
+
+  async execute(args) {
+    const { task_id, status } = args;
+    const validStatuses = ['pending', 'in_progress', 'completed', 'cancelled'];
+    if (!validStatuses.includes(status)) {
+      return `❌ Invalid status. Use: ${validStatuses.join(', ')}`;
+    }
+
+    try {
+      const tasks = await this._loadTasks();
+      const task = tasks.find(t => t.id === task_id);
+      if (!task) return `❌ Task not found: #${task_id}`;
+
+      task.status = status;
+      task.updated = new Date().toISOString();
+      await this._saveTasks(tasks);
+      return `✅ Task #${task_id} → ${status}`;
+    } catch (e) {
+      return `❌ ${e.message}`;
+    }
+  }
+
+  async _loadTasks() {
+    try { return await fs.readJson(TASKS_FILE); } catch { return []; }
+  }
+
+  async _saveTasks(tasks) {
+    await fs.ensureDir(path.dirname(TASKS_FILE));
+    await fs.writeJson(TASKS_FILE, tasks, { spaces: 2 });
+  }
+}