Fix varchar(10) too short for 'comfortable' — widen Phase A columns to varchar(20)

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

database/migrations/2026_07_25_000001_website_builder_v2_phase_a.php

@@ -16,19 +16,19 @@ public function up(): void
             $table->string('border_color', 7)->default('#e2e8f0')->after('surface_color');
             $table->string('muted_text_color', 7)->default('#64748b')->after('border_color');
 
-            $table->string('font_size_scale', 10)->default('medium')->after('body_font');
+            $table->string('font_size_scale', 20)->default('medium')->after('body_font');
             $table->string('heading_weight', 10)->default('700')->after('font_size_scale');
-            $table->string('line_height', 10)->default('normal')->after('heading_weight');
-            $table->string('letter_spacing', 10)->default('normal')->after('line_height');
+            $table->string('line_height', 20)->default('normal')->after('heading_weight');
+            $table->string('letter_spacing', 20)->default('normal')->after('line_height');
 
-            $table->string('density', 10)->default('comfortable')->after('letter_spacing');
-            $table->string('border_radius_preset', 10)->default('rounded')->after('density');
-            $table->string('card_style', 10)->default('raised')->after('border_radius_preset');
-            $table->string('section_divider', 10)->default('none')->after('card_style');
-            $table->string('image_shape', 10)->default('rounded')->after('section_divider');
+            $table->string('density', 20)->default('comfortable')->after('letter_spacing');
+            $table->string('border_radius_preset', 20)->default('rounded')->after('density');
+            $table->string('card_style', 20)->default('raised')->after('border_radius_preset');
+            $table->string('section_divider', 20)->default('none')->after('card_style');
+            $table->string('image_shape', 20)->default('rounded')->after('section_divider');
 
             $table->boolean('animations_enabled')->default(true)->after('image_shape');
-            $table->string('animation_speed', 10)->default('normal')->after('animations_enabled');
+            $table->string('animation_speed', 20)->default('normal')->after('animations_enabled');
         });
 
         // Update template CHECK constraint to add new templates