Keep CLI commands from starting the daemons

cli.py runs as a plain python script, so the factory's flask-argv sniff
never matched it: every serverkit verb booted a second job consumer,
scheduler and relay beside the live panel, whose boot reconcile marks
the panel's in-flight deploys failed.

backend/cli.py

@@ -41,6 +41,11 @@ def load_env():
 # Load env before any other imports that might use config
 _env_loaded = load_env()
 
+# A CLI command is a one-shot beside the running panel: it must not start a
+# second job consumer, scheduler and relay (the boot reconcile would mark the
+# panel's in-flight deploys failed). Queued work is run by the panel itself.
+os.environ.setdefault('SERVERKIT_SKIP_BACKGROUND', '1')
+
 from werkzeug.security import generate_password_hash
 from app import create_app, db
 from app.models import User

backend/tests/test_cli_skips_background.py

@@ -0,0 +1,33 @@
+"""`serverkit <verb>` must not boot a second set of background daemons.
+
+The CLI runs as `python cli.py ...`, so the app factory's `flask`-argv sniff
+never matched it: every command started a job consumer, scheduler and relay
+beside the live panel. Importing cli.py now opts the process out.
+"""
+import os
+import subprocess
+import sys
+
+BACKEND = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+PROBE = ("import os, cli; "
+         "print(os.environ.get('SERVERKIT_SKIP_BACKGROUND'))")
+
+
+def _probe(**env):
+    child_env = {k: v for k, v in os.environ.items()
+                 if k != 'SERVERKIT_SKIP_BACKGROUND'}
+    child_env.update(env)
+    out = subprocess.run([sys.executable, '-c', PROBE], cwd=BACKEND,
+                         env=child_env, capture_output=True, text=True,
+                         timeout=120)
+    assert out.returncode == 0, out.stderr
+    return out.stdout.strip().splitlines()[-1]
+
+
+def test_cli_import_skips_background_daemons():
+    assert _probe() == '1'
+
+
+def test_explicit_operator_setting_wins():
+    assert _probe(SERVERKIT_SKIP_BACKGROUND='0') == '0'