feat(pages): add comparison table section to landing pages

Add configurable comparison matrix section for feature comparisons. Supports 3 columns (e.g., your product vs competitors, or pricing tiers) with optional highlight column. Features can be organized into groups. Each cell accepts "true" for checkmark, "false" for X, or custom text. Includes settings UI with up to 10 groups and 20 features per group. Renders in all 9 page templates with responsive table styling.

routers/web/repo/setting/pages.go

@@ -499,6 +499,37 @@ func PagesContentPost(ctx *context.Context) {
 		}
 		config.Features = append(config.Features, pages_module.FeatureConfig{Title: title, Description: desc, Icon: icon, ImageURL: imageURL})
 	}
+	// Comparison section
+	config.Comparison.Enabled = ctx.FormBool("comparison_enabled")
+	config.Comparison.Headline = ctx.FormString("comparison_headline")
+	config.Comparison.Subheadline = ctx.FormString("comparison_subheadline")
+	config.Comparison.Columns = make([]pages_module.ComparisonColumnConfig, 3)
+	for c := range 3 {
+		config.Comparison.Columns[c] = pages_module.ComparisonColumnConfig{
+			Name:      ctx.FormString(fmt.Sprintf("comparison_col_name_%d", c)),
+			Highlight: ctx.FormBool(fmt.Sprintf("comparison_col_highlight_%d", c)),
+		}
+	}
+	config.Comparison.Groups = nil
+	for g := range 10 {
+		groupName := ctx.FormString(fmt.Sprintf("comparison_group_name_%d", g))
+		var features []pages_module.ComparisonFeatureConfig
+		for f := range 20 {
+			featName := ctx.FormString(fmt.Sprintf("comparison_feat_name_%d_%d", g, f))
+			if featName == "" {
+				continue
+			}
+			var values []string
+			for c := range 3 {
+				values = append(values, ctx.FormString(fmt.Sprintf("comparison_feat_val_%d_%d_%d", g, f, c)))
+			}
+			features = append(features, pages_module.ComparisonFeatureConfig{Name: featName, Values: values})
+		}
+		if groupName == "" && len(features) == 0 {
+			continue
+		}
+		config.Comparison.Groups = append(config.Comparison.Groups, pages_module.ComparisonGroupConfig{Name: groupName, Features: features})
+	}
 	if err := savePagesLandingConfig(ctx, config); err != nil {
 		ctx.ServerError("SavePagesConfig", err)
 		return