chore: improve error logging and extend StorageClass validation

- Redirected error messages in `deploy.sh` and `render_supabase.py` to `stderr` for better logging clarity.
- Extended allowed prefixes for Supabase StorageClass to include `pd-standard`.

deploy.sh

@@ -22,7 +22,7 @@ import json
 import configparser
 
 def die(msg):
-    print(f"ERROR: {msg}")
+    print(f"ERROR: {msg}", file=sys.stderr)
     sys.exit(1)
 
 c = configparser.ConfigParser()
@@ -51,7 +51,7 @@ try:
     if disk_type != "pd-standard":
         die(f"storage-class configuration error: StorageClass '{sc_name}' must use parameters.type 'pd-standard', but uses '{disk_type}'.")
     
-    print(f"Verified live Supabase StorageClass '{sc_name}' (type: {disk_type}).")
+    print(f"Verified live Supabase StorageClass '{sc_name}' (type: {disk_type}).", file=sys.stderr)
 except subprocess.CalledProcessError:
     die(f"storage-class configuration error: Required StorageClass '{sc_name}' does not exist on cluster '{ctx}'.")
 PY

supabase/deploy.sh

@@ -131,7 +131,7 @@ warn() {
 }
 
 log() {
-  echo "==> $*"
+  echo "==> $*" >&2
 }
 
 write_split_supabase_values() {

supabase/helm/render_supabase.py

@@ -931,7 +931,7 @@ def _build_overlay(cfg: configparser.ConfigParser, args: argparse.Namespace) ->
 
     if supabase_storage_class:
         # Validate: must be a synology/merlin/gke mount — refuse pi/local SD card classes
-        allowed_prefixes = ("synology", "merlin-local-iscsi", "myrddin-local-iscsi", "supabase-gke", "supabase-standard")
+        allowed_prefixes = ("synology", "merlin-local-iscsi", "myrddin-local-iscsi", "supabase-gke", "supabase-standard", "pd-standard")
         if not any(supabase_storage_class.startswith(p) for p in allowed_prefixes):
             raise SystemExit(
                 f"SUPABASE_STORAGE_CLASS '{supabase_storage_class}' is not a synology or GKE CSI mount. "