Add built-in scheduler with group-scoped tasks

- Custom nanoclaw MCP server with scheduling tools (schedule_task,
  list_tasks, get_task, update_task, pause/resume/cancel_task, send_message)
- Tasks run as full agents in their group's context
- Support for cron, interval, and one-time schedules
- Task run logging with duration and results
- Main channel has Bash access for admin tasks (query DB, manage groups)
- Other groups restricted to file operations only
- Updated docs and requirements

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package-lock.json

@@ -11,9 +11,11 @@
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         "@whiskeysockets/baileys": "^7.0.0-rc.9",
         "better-sqlite3": "^11.8.1",
+        "cron-parser": "^5.5.0",
         "pino": "^9.6.0",
         "pino-pretty": "^13.0.0",
-        "qrcode-terminal": "^0.12.0"
+        "qrcode-terminal": "^0.12.0",
+        "zod": "^4.3.6"
       },
       "devDependencies": {
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@@ -1350,6 +1352,18 @@
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       }
     },
+    "node_modules/cron-parser": {
+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/cron-parser/-/cron-parser-5.5.0.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "luxon": "^3.7.1"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/curve25519-js": {
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       "resolved": "https://registry.npmjs.org/curve25519-js/-/curve25519-js-0.0.4.tgz",
@@ -1694,6 +1708,15 @@
         "node": "20 || >=22"
       }
     },
+    "node_modules/luxon": {
+      "version": "3.7.2",
+      "resolved": "https://registry.npmjs.org/luxon/-/luxon-3.7.2.tgz",
+      "integrity": "sha512-vtEhXh/gNjI9Yg1u4jX/0YVPMvxzHuGgCm6tC5kZyb08yjGWGnqAjGJvcXbqQR2P3MyMEFnRbpcdFS6PBcLqew==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/media-typer": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-1.1.0.tgz",
@@ -2731,7 +2754,6 @@
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       "license": "MIT",
-      "peer": true,
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }