fix: ADMIN_EMAIL → ADMIN_EMAILS, add default admin emails

Rename env var to plural (CSV list) in CI yml to match the actual
config key. Add hendrik@beanflow.coffee and simon@beanflows.coffee
as hardcoded defaults so they get admin access without needing the
env var set explicitly.

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

web/src/beanflows/core.py

@@ -52,7 +52,9 @@ class Config:
     EMAIL_FROM: str = os.getenv("EMAIL_FROM", "hello@example.com")
 
     ADMIN_EMAILS: list[str] = [
-        e.strip().lower() for e in os.getenv("ADMIN_EMAILS", "").split(",") if e.strip()
+        e.strip().lower()
+        for e in os.getenv("ADMIN_EMAILS", "hendrik@beanflow.coffee,simon@beanflows.coffee").split(",")
+        if e.strip()
     ]
 
     RATE_LIMIT_REQUESTS: int = int(os.getenv("RATE_LIMIT_REQUESTS", "100"))