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/cli/list.py

@@ -11,22 +11,13 @@ from ..manifest import Manifest
 from ._common import PROG, USER_CWD
 
 _ANSI_COLOR_CODES: dict[str, str] = {
-    "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",
 }
 _ANSI_RESET = "\033[0m"