feat: restructure theme system with consolidated and separated colors

- Consolidate duplicate colors into semantic naming:
  * key colors: key_back, key_action, key_navigation
  * status colors: status_success, status_error, status_warning, status_info
  * metrics colors: metrics_* prefix for performance indicators
  * typing colors: typing_* prefix for typing interface
- Remove countdown colors (use status colors in sequence)
- Remove highlight color (use key_action for selections)
- Separate language colors into dedicated files:
  * lang_dark.json, lang_light.json, lang_ascii.json
- Improve light theme language color visibility on white background
- Remove old ascii_dark.json and ascii_light.json files

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Author: unhappychoice

assets/themes/ascii.json

@@ -0,0 +1,29 @@
+{
+  "name": "ASCII",
+  "description": "Classic terminal color scheme with ASCII-style colors on dark background",
+  "colors": {
+    "border": "blue",
+    "title": "white",
+    "text": "white",
+    "text_secondary": "dark_gray",
+    "background": "black",
+    "background_secondary": "dark_gray",
+    "status_success": "green",
+    "status_info": "cyan",
+    "status_warning": "yellow",
+    "status_error": "red",
+    "key_back": "red",
+    "key_action": "light_blue",
+    "key_navigation": "light_blue",
+    "metrics_score": "magenta",
+    "metrics_cpm_wpm": "green",
+    "metrics_accuracy": "yellow",
+    "metrics_duration": "cyan",
+    "metrics_stage_info": "blue",
+    "typing_untyped_text": "white",
+    "typing_typed_text": "light_blue",
+    "typing_cursor_fg": "black",
+    "typing_cursor_bg": "white",
+    "typing_mistake_bg": "red"
+  }
+}

assets/themes/ascii_dark.json

@@ -0,0 +1,29 @@
+{
+  "name": "Dark",
+  "description": "Modern dark theme with precise RGB colors",
+  "colors": {
+    "border": {"r": 100, "g": 149, "b": 237},
+    "title": {"r": 255, "g": 255, "b": 255},
+    "text": {"r": 255, "g": 255, "b": 255},
+    "text_secondary": {"r": 96, "g": 96, "b": 96},
+    "background": {"r": 0, "g": 0, "b": 0},
+    "background_secondary": {"r": 64, "g": 64, "b": 64},
+    "status_success": {"r": 46, "g": 160, "b": 67},
+    "status_info": {"r": 96, "g": 165, "b": 250},
+    "status_warning": {"r": 245, "g": 158, "b": 11},
+    "status_error": {"r": 239, "g": 68, "b": 68},
+    "key_back": {"r": 239, "g": 68, "b": 68},
+    "key_action": {"r": 96, "g": 165, "b": 250},
+    "key_navigation": {"r": 96, "g": 165, "b": 250},
+    "metrics_score": {"r": 168, "g": 85, "b": 247},
+    "metrics_cpm_wpm": {"r": 46, "g": 160, "b": 67},
+    "metrics_accuracy": {"r": 245, "g": 158, "b": 11},
+    "metrics_duration": {"r": 34, "g": 211, "b": 238},
+    "metrics_stage_info": {"r": 100, "g": 149, "b": 237},
+    "typing_untyped_text": {"r": 192, "g": 192, "b": 192},
+    "typing_typed_text": {"r": 96, "g": 165, "b": 250},    
+    "typing_cursor_fg": {"r": 0, "g": 0, "b": 0},
+    "typing_cursor_bg": {"r": 220, "g": 220, "b": 220},
+    "typing_mistake_bg": {"r": 239, "g": 68, "b": 68}
+  }
+}

assets/themes/ascii_light.json

@@ -0,0 +1,19 @@
+{
+  "lang_rust": "yellow",
+  "lang_python": "yellow",
+  "lang_javascript": "yellow",
+  "lang_typescript": "blue",
+  "lang_go": "cyan",
+  "lang_java": "red",
+  "lang_c": "gray",
+  "lang_cpp": "blue",
+  "lang_csharp": "magenta",
+  "lang_php": "light_blue",
+  "lang_ruby": "red",
+  "lang_swift": "red",
+  "lang_kotlin": "magenta",
+  "lang_scala": "red",
+  "lang_haskell": "magenta",
+  "lang_dart": "cyan",
+  "lang_default": "white"
+}

assets/themes/dark.json

@@ -0,0 +1,19 @@
+{
+  "lang_rust": {"r": 222, "g": 165, "b": 132},
+  "lang_python": {"r": 255, "g": 212, "b": 59},
+  "lang_javascript": {"r": 240, "g": 219, "b": 79},
+  "lang_typescript": {"r": 49, "g": 120, "b": 198},
+  "lang_go": {"r": 0, "g": 173, "b": 181},
+  "lang_java": {"r": 237, "g": 41, "b": 57},
+  "lang_c": {"r": 85, "g": 85, "b": 85},
+  "lang_cpp": {"r": 0, "g": 89, "b": 156},
+  "lang_csharp": {"r": 239, "g": 117, "b": 27},
+  "lang_php": {"r": 119, "g": 123, "b": 180},
+  "lang_ruby": {"r": 204, "g": 52, "b": 45},
+  "lang_swift": {"r": 250, "g": 109, "b": 63},
+  "lang_kotlin": {"r": 124, "g": 75, "b": 255},
+  "lang_scala": {"r": 220, "g": 50, "b": 47},
+  "lang_haskell": {"r": 94, "g": 80, "b": 134},
+  "lang_dart": {"r": 0, "g": 180, "b": 240},
+  "lang_default": {"r": 255, "g": 255, "b": 255}
+}

assets/themes/lang_ascii.json

@@ -0,0 +1,19 @@
+{
+  "lang_rust": {"r": 222, "g": 165, "b": 132},
+  "lang_python": {"r": 184, "g": 134, "b": 11},
+  "lang_javascript": {"r": 181, "g": 137, "b": 0},
+  "lang_typescript": {"r": 49, "g": 120, "b": 198},
+  "lang_go": {"r": 0, "g": 173, "b": 181},
+  "lang_java": {"r": 237, "g": 41, "b": 57},
+  "lang_c": {"r": 85, "g": 85, "b": 85},
+  "lang_cpp": {"r": 0, "g": 89, "b": 156},
+  "lang_csharp": {"r": 239, "g": 117, "b": 27},
+  "lang_php": {"r": 119, "g": 123, "b": 180},
+  "lang_ruby": {"r": 204, "g": 52, "b": 45},
+  "lang_swift": {"r": 250, "g": 109, "b": 63},
+  "lang_kotlin": {"r": 124, "g": 75, "b": 255},
+  "lang_scala": {"r": 220, "g": 50, "b": 47},
+  "lang_haskell": {"r": 94, "g": 80, "b": 134},
+  "lang_dart": {"r": 0, "g": 120, "b": 180},
+  "lang_default": {"r": 64, "g": 64, "b": 64}
+}

assets/themes/lang_dark.json

@@ -0,0 +1,29 @@
+{
+  "name": "Light",
+  "description": "Modern light theme with precise RGB colors",
+  "colors": {
+    "border": {"r": 100, "g": 149, "b": 237},
+    "title": {"r": 0, "g": 0, "b": 0},
+    "text": {"r": 0, "g": 0, "b": 0},
+    "text_secondary": {"r": 150, "g": 150, "b": 150},
+    "background": {"r": 255, "g": 255, "b": 255},
+    "background_secondary": {"r": 200, "g": 200, "b": 200},
+    "status_success": {"r": 46, "g": 160, "b": 67},
+    "status_info": {"r": 96, "g": 165, "b": 250},
+    "status_warning": {"r": 245, "g": 158, "b": 11},
+    "status_error": {"r": 239, "g": 68, "b": 68},
+    "key_back": {"r": 239, "g": 68, "b": 68},
+    "key_action": {"r": 96, "g": 165, "b": 250},
+    "key_navigation": {"r": 96, "g": 165, "b": 250},
+    "metrics_score": {"r": 168, "g": 85, "b": 247},
+    "metrics_cpm_wpm": {"r": 46, "g": 160, "b": 67},
+    "metrics_accuracy": {"r": 245, "g": 158, "b": 11},
+    "metrics_duration": {"r": 34, "g": 211, "b": 238},
+    "metrics_stage_info": {"r": 100, "g": 149, "b": 237},
+    "typing_untyped_text": {"r": 0, "g": 0, "b": 0},    
+    "typing_typed_text": {"r": 96, "g": 165, "b": 250},
+    "typing_cursor_fg": {"r": 255, "g": 255, "b": 255},
+    "typing_cursor_bg": {"r": 40, "g": 40, "b": 40},
+    "typing_mistake_bg": {"r": 239, "g": 68, "b": 68}
+  }
+}