Use Node.js script for Cronicle trigger to avoid shell dependency

Switches from curl (shell not available in Cronicle container) to a Node.js
inline script using the built-in http module. Tries raggr-green first, falls
back to raggr-blue automatically — no manual update needed on color swap.

Delete the existing broken Cronicle event before redeploying.

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

utils/cronicle.py

@@ -47,7 +47,35 @@ async def _get_first_category_id() -> str:
         return rows[0]["id"]
 
 
-async def _create_event(title: str, url: str, headers: str, category_id: str) -> str:
+def _make_trigger_script(cron_secret: str) -> str:
+    """Node.js script that tries raggr-green then falls back to raggr-blue.
+
+    Uses Node's built-in http module — no curl/wget needed, and node is always
+    present since Cronicle itself runs on Node.
+    """
+    path = "/api/scheduled-messages/trigger"
+    return f"""#!/usr/bin/env node
+const http = require('http');
+function post(host) {{
+  return new Promise((resolve, reject) => {{
+    const req = http.request(
+      {{ hostname: host, port: 8080, path: '{path}', method: 'POST',
+         headers: {{'X-Cron-Secret': '{cron_secret}'}} }},
+      res => {{ res.resume(); resolve(res.statusCode); }}
+    );
+    req.setTimeout(10000, () => {{ req.destroy(); reject(new Error('timeout')); }});
+    req.on('error', reject);
+    req.end();
+  }});
+}}
+post('raggr-green').catch(() => post('raggr-blue')).catch(err => {{
+  console.error('trigger failed:', err.message);
+  process.exitCode = 1;
+}});
+"""
+
+
+async def _create_event(title: str, script: str, category_id: str) -> str:
     async with httpx.AsyncClient() as client:
         resp = await client.post(
             f"{_base_url()}/api/app/create_event/v1",
@@ -55,17 +83,12 @@ async def _create_event(title: str, url: str, headers: str, category_id: str) ->
                 "api_key": _api_key(),
                 "title": title,
                 "enabled": 1,
-                "plugin": "urlplug",
+                "plugin": "shellplug",
                 "target": "allgrp",
                 "category": category_id,
-                # Every minute: all 60 minutes explicitly (Cronicle {} defaults to hourly)
+                # Every minute: list all 60 explicitly (Cronicle {} defaults to hourly)
                 "timing": {"minutes": list(range(60))},
-                "params": {
-                    "method": "post",
-                    "url": url,
-                    "headers": headers,
-                    "data": "",
-                },
+                "params": {"script": script},
                 "notes": "Auto-registered by raggr on startup",
             },
             timeout=10,
@@ -87,7 +110,6 @@ async def ensure_cronicle_events() -> None:
         return
 
     cron_secret = os.environ.get("CRON_SECRET", "")
-    raggr_url = os.environ.get("RAGGR_INTERNAL_URL", "http://raggr-green:8080")
 
     try:
         events = await _get_events()
@@ -96,12 +118,8 @@ async def ensure_cronicle_events() -> None:
             return
 
         category_id = await _get_first_category_id()
-        event_id = await _create_event(
-            title=_SCHEDULED_MESSAGES_TITLE,
-            url=f"{raggr_url}/api/scheduled-messages/trigger",
-            headers=f"X-Cron-Secret: {cron_secret}",
-            category_id=category_id,
-        )
+        script = _make_trigger_script(cron_secret)
+        event_id = await _create_event(_SCHEDULED_MESSAGES_TITLE, script, category_id)
         logger.info(
             "Cronicle: created '%s' (id=%s)", _SCHEDULED_MESSAGES_TITLE, event_id
         )