feat: drop dim colors, keep only bright variants renamed to base names

Remove the 8 non-bright and 1 bright-black colors from all color maps.
Rename the remaining 7 bright-* colors to their base names (e.g.
bright-green → green) so the palette is smaller and always vibrant.

Update _init_color_pairs in tui.py to always apply A_BOLD (all palette
entries are now bright variants), and fix all tests to match.

bot_bottle/contrib/claude/agent_provider.py

@@ -42,41 +42,23 @@ def _prompt_path(guest_home: str) -> str:
 
 
 _STATUS_LINE_COLORS = {
-    "black": "\033[30m",
-    "red": "\033[31m",
-    "green": "\033[32m",
-    "yellow": "\033[33m",
-    "blue": "\033[34m",
-    "magenta": "\033[35m",
-    "cyan": "\033[36m",
-    "white": "\033[37m",
-    "bright-black": "\033[90m",
-    "bright-red": "\033[91m",
-    "bright-green": "\033[92m",
-    "bright-yellow": "\033[93m",
-    "bright-blue": "\033[94m",
-    "bright-magenta": "\033[95m",
-    "bright-cyan": "\033[96m",
-    "bright-white": "\033[97m",
+    "red": "\033[91m",
+    "green": "\033[92m",
+    "yellow": "\033[93m",
+    "blue": "\033[94m",
+    "magenta": "\033[95m",
+    "cyan": "\033[96m",
+    "white": "\033[97m",
 }
 
 _CLAUDE_THEME_COLORS = {
-    "black": "black",
-    "red": "red",
-    "green": "green",
-    "yellow": "yellow",
-    "blue": "blue",
-    "magenta": "magenta",
-    "cyan": "cyan",
-    "white": "white",
-    "bright-black": "blackBright",
-    "bright-red": "redBright",
-    "bright-green": "greenBright",
-    "bright-yellow": "yellowBright",
-    "bright-blue": "blueBright",
-    "bright-magenta": "magentaBright",
-    "bright-cyan": "cyanBright",
-    "bright-white": "whiteBright",
+    "red": "redBright",
+    "green": "greenBright",
+    "yellow": "yellowBright",
+    "blue": "blueBright",
+    "magenta": "magentaBright",
+    "cyan": "cyanBright",
+    "white": "whiteBright",
 }