fix: address 14 PR review comments from coderabbitai/chatgpt-codex

- guards.py: split confirm bypass into explicit check; use .get() for
  dict description to prevent KeyError on missing action keys
- resources.py: use `is not None` for logs stream cache check; add
  on-demand subscribe_once fallback when auto_start is disabled so
  resources return real data instead of a perpetual "connecting" placeholder
- setup.py: always prompt before overwriting credentials even on failed
  probe (transient outage ≠ bad credentials); update elicitation message
- unraid.py: always elicit_reset_confirmation before overwriting creds;
  use asyncio.to_thread() for os.path.realpath() to avoid blocking async
- test_health.py: update test for new always-prompt-on-overwrite behavior;
  add test for declined-reset on failed probe
- test_resources.py: add tests for logs-stream None check, auto_start
  disabled fallback (success and failure), and fallback error recovery
- test-tools.sh: add suite_live() covering cpu/memory/cpu_telemetry/
  notifications_overview/log_tail; include in sequential and parallel runners
- CLAUDE.md: correct unraid_live → live action reference; document that
  setup always prompts before overwriting; note subscribe_once fallback

unraid_mcp/subscriptions/resources.py

@@ -15,6 +15,7 @@ from fastmcp import FastMCP
 from ..config.logging import logger
 from .manager import subscription_manager
 from .queries import SNAPSHOT_ACTIONS
+from .snapshot import subscribe_once
 
 
 # Global flag to track subscription startup
@@ -94,7 +95,7 @@ def register_subscription_resources(mcp: FastMCP) -> None:
         """Real-time log stream data from subscription."""
         await ensure_subscriptions_started()
         data = await subscription_manager.get_resource_data("logFileSubscription")
-        if data:
+        if data is not None:
             return json.dumps(data, indent=2)
         return json.dumps(
             {
@@ -118,6 +119,16 @@ def register_subscription_resources(mcp: FastMCP) -> None:
                         "message": f"Subscription '{action}' failed: {last_error}",
                     }
                 )
+            # When auto-start is disabled, fall back to a one-shot fetch so the
+            # resource returns real data instead of a perpetual "connecting" placeholder.
+            if not subscription_manager.auto_start_enabled:
+                try:
+                    query_info = SNAPSHOT_ACTIONS.get(action)
+                    if query_info is not None:
+                        fallback_data = await subscribe_once(query_info)
+                        return json.dumps(fallback_data, indent=2)
+                except Exception as e:
+                    logger.warning("[RESOURCE] On-demand fallback for '%s' failed: %s", action, e)
             return json.dumps(
                 {
                     "status": "connecting",