fix(cron): rewrite cloud-incompatible prompt instructions (#378)

Health Monitor prompts say 'Check Ollama is responding' but run
on cloud models that cannot reach localhost. Instead of just
warning the agent, rewrite the instructions to cloud-compatible
equivalents the agent can actually execute.

Changes:
- Add import re
- Add _CLOUD_INCOMPATIBLE_PATTERNS: regex pairs (pattern, replacement)
- Add _rewrite_cloud_incompatible_prompt(): rewrites localhost/Ollama
  references to 'use available tools to check service health'
- Wire into run_job() after resolve_turn_route()

Closes #378

cron/scheduler.py

@@ -13,6 +13,7 @@ import concurrent.futures
 import json
 import logging
 import os
+import re
 import subprocess
 import sys
 
@@ -643,7 +644,56 @@ def _build_job_prompt(job: dict) -> str:
     return "\n".join(parts)
 
 
-def run_job(job: dict) -> tuple[bool, str, str, Optional[str]]:
+# Regex patterns for local service references that fail on cloud endpoints
+_CLOUD_INCOMPATIBLE_PATTERNS = [
+    (re.compile(r"\b[Cc]heck\s+(?:that\s+)?[Oo]llama\s+(?:is\s+)?(?:responding|running|up|available)", re.IGNORECASE),
+     "Verify system services are healthy using available tools"),
+    (re.compile(r"\b[Vv]erify\s+(?:that\s+)?[Oo]llama\s+(?:is\s+)?(?:responding|running|up)", re.IGNORECASE),
+     "Verify system services are healthy using available tools"),
+    (re.compile(r"\bcurl\s+localhost:\d+", re.IGNORECASE),
+     "use available tools to check service health"),
+    (re.compile(r"\bcurl\s+127\.0\.0\.1:\d+", re.IGNORECASE),
+     "use available tools to check service health"),
+    (re.compile(r"\bpoll\s+localhost", re.IGNORECASE),
+     "check service health via available tools"),
+]
+
+
+def _rewrite_cloud_incompatible_prompt(prompt: str, base_url: str) -> str:
+    """Rewrite prompt instructions that assume local service access when running on cloud.
+
+    When a cron job runs on a cloud inference endpoint (Nous, OpenRouter, Anthropic),
+    instructions to "Check Ollama" or "curl localhost:11434" are impossible.
+    Instead of just warning, this rewrites the instruction to a cloud-compatible
+    equivalent that the agent can actually execute.
+
+    Returns the (possibly rewritten) prompt.
+    """
+    try:
+        from agent.model_metadata import is_local_endpoint
+    except ImportError:
+        return prompt
+
+    if is_local_endpoint(base_url or ""):
+        return prompt  # Local — no rewrite needed
+
+    rewritten = prompt
+    for pattern, replacement in _CLOUD_INCOMPATIBLE_PATTERNS:
+        rewritten = pattern.sub(replacement, rewritten)
+
+    if rewritten != prompt:
+        rewritten = (
+            "[NOTE: Some instructions were adjusted for cloud execution. "
+            "Local service checks were rewritten to use available tools.]
+
+"
+            + rewritten
+        )
+
+    return rewritten
+
+
+def run_job(job: dict) -> tuple[bool, str, str, Optional[str]]:(job: dict) -> tuple[bool, str, str, Optional[str]]:
     """
     Execute a single cron job.