feat(baseline): 添加 foreground 和 background 字段，并在相关方法中初始化和使用它们

color-module/src/schemes/q_style_2/baseline.rs

@@ -120,6 +120,10 @@ pub struct Baseline {
     pub outline: Oklch,
     #[serde(serialize_with = "crate::foreign_serializer::serialize_oklch_to_hex")]
     pub outline_variant: Oklch,
+    #[serde(serialize_with = "crate::foreign_serializer::serialize_oklch_to_hex")]
+    pub foreground: Oklch,
+    #[serde(serialize_with = "crate::foreign_serializer::serialize_oklch_to_hex")]
+    pub background: Oklch,
     #[serde(skip)]
     pub neutral_lightness: f32,
     #[serde(skip)]
@@ -300,6 +304,19 @@ impl Baseline {
         let warn_unit = ColorUnit::new(warn, &neutral_swatch, reference_lightness, settings);
         let info_unit = ColorUnit::new(info, &neutral_swatch, reference_lightness, settings);
 
+        // Initialize foreground and background
+        let (foreground, background) = if is_dark {
+            // Dark mode: foreground = neutral_lightest, background = neutral_darkest with +10% lightness
+            let background_darkest = Oklch {
+                l: (neutral_darkest.l * 1.1).min(1.0),
+                ..*neutral_darkest
+            };
+            (*neutral_lightest, background_darkest)
+        } else {
+            // Light mode: foreground = neutral_darkest, background = neutral_lightest
+            (*neutral_darkest, *neutral_lightest)
+        };
+
         Self {
             primary: primary_unit,
             secondary: secondary_unit,
@@ -318,6 +335,8 @@ impl Baseline {
             overlay: overlay_color,
             outline: outline_color,
             outline_variant: outline_variant_color,
+            foreground,
+            background,
             neutral_lightness: reference_lightness,
             scheme_settings: settings.clone(),
             is_dark,
@@ -392,6 +411,14 @@ impl Baseline {
             "--color-{scheme_mode}-outline-variant: #{};",
             map_oklch_to_srgb_hex(&self.outline_variant)
         ));
+        css_variables.push(format!(
+            "--color-{scheme_mode}-foreground: #{};",
+            map_oklch_to_srgb_hex(&self.foreground)
+        ));
+        css_variables.push(format!(
+            "--color-{scheme_mode}-background: #{};",
+            map_oklch_to_srgb_hex(&self.background)
+        ));
 
         for (name, color_unit) in &self.custom_colors {
             let lowercased_name = name.to_lowercase();
@@ -442,6 +469,14 @@ impl Baseline {
             "outline-variant".to_string(),
             map_oklch_to_srgb_hex(&self.outline_variant),
         );
+        css_variables.insert(
+            "foreground".to_string(),
+            map_oklch_to_srgb_hex(&self.foreground),
+        );
+        css_variables.insert(
+            "background".to_string(),
+            map_oklch_to_srgb_hex(&self.background),
+        );
 
         for (name, color) in &self.custom_colors {
             let lowercased_name = name.to_lowercase();
@@ -503,6 +538,14 @@ impl Baseline {
             "$color-{scheme_mode}-outline-variant: #{};",
             map_oklch_to_srgb_hex(&self.outline_variant)
         ));
+        scss_variables.push(format!(
+            "$color-{scheme_mode}-foreground: #{};",
+            map_oklch_to_srgb_hex(&self.foreground)
+        ));
+        scss_variables.push(format!(
+            "$color-{scheme_mode}-background: #{};",
+            map_oklch_to_srgb_hex(&self.background)
+        ));
 
         for (name, color) in &self.custom_colors {
             let lowercased_name = name.to_lowercase();
@@ -604,6 +647,14 @@ impl Baseline {
             "{indent}outlineVariant: '#{}',",
             map_oklch_to_srgb_hex(&self.outline_variant)
         ));
+        javascript_fields.push(format!(
+            "{indent}foreground: '#{}',",
+            map_oklch_to_srgb_hex(&self.foreground)
+        ));
+        javascript_fields.push(format!(
+            "{indent}background: '#{}',",
+            map_oklch_to_srgb_hex(&self.background)
+        ));
 
         for (name, color) in &self.custom_colors {
             let lowercased_name = name.to_lowercase();