Fix feed validation output

repub/model.py

@@ -34,6 +34,8 @@ DATABASE_PRAGMAS = {
 SCHEMA_GLOB = "*.sql"
 MAX_CONCURRENT_JOBS_SETTING_KEY = "max_concurrent_jobs"
 DEFAULT_MAX_CONCURRENT_JOBS = 1
+FEED_URL_SETTING_KEY = "feed_url"
+DEFAULT_FEED_URL = ""
 
 database = SqliteDatabase(None, pragmas=DATABASE_PRAGMAS)
 
@@ -163,8 +165,16 @@ def load_max_concurrent_jobs() -> int:
     return parsed if parsed >= 1 else DEFAULT_MAX_CONCURRENT_JOBS
 
 
+def load_feed_url() -> str:
+    value = load_setting(FEED_URL_SETTING_KEY, DEFAULT_FEED_URL)
+    return value if isinstance(value, str) else DEFAULT_FEED_URL
+
+
 def load_settings_form() -> dict[str, object]:
-    return {"max_concurrent_jobs": load_max_concurrent_jobs()}
+    return {
+        "max_concurrent_jobs": load_max_concurrent_jobs(),
+        "feed_url": load_feed_url(),
+    }
 
 
 def load_source_form(slug: str) -> dict[str, object] | None: