Allow dev manifest selection when using non-releases URLs

pikit_api/releases.py

@@ -210,10 +210,11 @@ def fetch_manifest_for_channel(channel: str, with_meta: bool = False):
     try:
         parts = base_manifest_url.split("/")
         if "releases" not in parts:
-            if manifest:
-                return (manifest, {"version_dates": version_dates}) if with_meta else manifest
-            mf = fetch_manifest(base_manifest_url)
-            return (mf, {"version_dates": version_dates}) if with_meta else mf
+            # No releases API for this URL; keep any fetched manifest and skip API discovery.
+            releases = []
+            if not manifest:
+                manifest = fetch_manifest(base_manifest_url)
+        else:
             idx = parts.index("releases")
             owner = parts[idx - 2]
             repo = parts[idx - 1]