Aug 7 - Update new design as default

config.py

@@ -58,6 +58,16 @@ class Config:
     # bar into the image before storing it. Set false to store raw uploads.
     PHOTO_STAMP_ENABLED = os.environ.get('PHOTO_STAMP_ENABLED', 'true').lower() == 'true'
 
+    # ── Web portal design (phase50 — Aug 2026) ───────────────────────────────
+    # The design a user sees when they have never chosen one. phase48 shipped
+    # the modern design as an opt-in A/B test with 'classic' as the default;
+    # phase50 promotes 'modern' to the default now that the test is settled.
+    #
+    # This is the FALLBACK only — a stored users.ui_theme always wins, so anyone
+    # who switches keeps their choice. Set DEFAULT_UI_THEME=classic to revert
+    # the default without touching a single saved preference.
+    DEFAULT_UI_THEME = os.environ.get('DEFAULT_UI_THEME', 'modern')
+
     # ── Issue comment visibility (TEMPORARY — Aug 2026) ──────────────────────
     # True  = every comment on an issue is visible to everyone, customers
     #         included; the per-comment is_customer_visible flag is ignored