feat: add SQL query tool, platform debug, loyalty settings, and multi-module improvements

- Add admin SQL query tool with saved queries, schema explorer presets,
  and collapsible category sections (dev_tools module)
- Add platform debug tool for admin diagnostics
- Add loyalty settings page with owner-only access control
- Fix loyalty settings owner check (use currentUser instead of window.__userData)
- Replace HTTPException with AuthorizationException in loyalty routes
- Expand loyalty module with PIN service, Apple Wallet, program management
- Improve store login with platform detection and multi-platform support
- Update billing feature gates and subscription services
- Add store platform sync improvements and remove is_primary column
- Add unit tests for loyalty (PIN, points, stamps, program services)
- Update i18n translations across dev_tools locales

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

alembic/versions/remove_store_platform_is_primary.py

@@ -0,0 +1,35 @@
+"""Remove is_primary from store_platforms
+
+The platform is always deterministic from the URL context (path in dev,
+subdomain/domain in prod) and the JWT carries token_platform_id.
+The is_primary column was a fallback picker that silently returned the
+wrong platform for multi-platform stores.
+
+Revision ID: remove_is_primary_001
+Revises: billing_001
+Create Date: 2026-03-09
+"""
+
+import sqlalchemy as sa
+
+from alembic import op
+
+revision = "remove_is_primary_001"
+down_revision = "billing_001"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.drop_index("idx_store_platform_primary", table_name="store_platforms")
+    op.drop_column("store_platforms", "is_primary")
+
+
+def downgrade() -> None:
+    op.add_column(
+        "store_platforms",
+        sa.Column("is_primary", sa.Boolean(), nullable=False, server_default="false"),
+    )
+    op.create_index(
+        "idx_store_platform_primary", "store_platforms", ["store_id", "is_primary"]
+    )