chore(portal): bump 19.0.3.0.0 + register Phase 1 SCSS

Tokens partial loaded first; buttons SCSS loaded next; legacy
catch-all stays last. Per CLAUDE.md rule 8 every SCSS file is a
separate entry (no @import allowed in Odoo 19 custom SCSS).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fusion_plating/fusion_plating_portal/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Plating — Customer Portal',
-    'version': '19.0.2.3.0',
+    'version': '19.0.3.0.0',
     'category': 'Manufacturing/Plating',
     'summary': 'Customer-facing portal for plating shops: online RFQ, job status, '
                'CoC downloads, invoice access.',
@@ -65,6 +65,11 @@ Copyright (c) 2026 Nexa Systems Inc. All rights reserved.
     ],
     'assets': {
         'web.assets_frontend': [
+            # Tokens MUST be first so every later file sees the variables.
+            'fusion_plating_portal/static/src/scss/_fp_portal_tokens.scss',
+            # Phase 1 — button system
+            'fusion_plating_portal/static/src/scss/fp_portal_buttons.scss',
+            # Catch-all legacy rules (last)
             'fusion_plating_portal/static/src/scss/fusion_plating_portal.scss',
             'fusion_plating_portal/static/src/js/fp_rfq_form.js',
         ],