fix(cliamp hook): readable accent + correct fg/bright_fg brightness

theme-set.d/50-cliamp.sh

@@ -8,13 +8,47 @@ fi
 theme_dir="$HOME/.config/cliamp/themes"
 mkdir -p "$theme_dir"
 
+# Relative luminance scaled to 0-255 (integer, no external deps).
+_lum() {
+    local r=$((16#${1:0:2})) g=$((16#${1:2:2})) b=$((16#${1:4:2}))
+    echo $(( (2126 * r + 7152 * g + 722 * b) / 10000 ))
+}
+
+# cliamp maps bright_fg -> normal text, fg -> dimmed text, so bright_fg must be
+# the brighter of the two. Some palettes define color15 darker than color7, which
+# would invert that, so pick by luminance instead of trusting the names.
+if [ "$(_lum "$bright_white")" -ge "$(_lum "$normal_white")" ]; then
+    fg_bright="$bright_white"; fg_dim="$normal_white"
+else
+    fg_bright="$normal_white"; fg_dim="$bright_white"
+fi
+
+# cliamp uses accent for the title, seek bar AND the key-hint background, so it
+# must stand out from the terminal background. Prefer the theme's blue, but if it
+# sits too close to the background (e.g. monochrome themes) fall back to the most
+# contrasting candidate so those elements stay readable.
+bg_lum="$(_lum "$primary_background")"
+accent="$normal_blue"
+acc_diff=$(( $(_lum "$accent") - bg_lum )); acc_diff=${acc_diff#-}
+if [ "$acc_diff" -lt 80 ]; then
+    accent=""
+    # first try a readable *coloured* accent (keeps a visual accent)…
+    for cand in "$bright_blue" "$normal_cyan" "$normal_yellow" "$normal_green" "$normal_red"; do
+        [ -n "$cand" ] || continue
+        cand_diff=$(( $(_lum "$cand") - bg_lum )); cand_diff=${cand_diff#-}
+        [ "$cand_diff" -ge 80 ] && { accent="$cand"; break; }
+    done
+    # …otherwise fall back to the readable foreground colour
+    [ -n "$accent" ] || accent="$fg_bright"
+fi
+
 cat > "$theme_dir/omarchy.toml" << EOF
 # Omarchy theme for cliamp
 # Generated by thpm — do not edit manually.
 
-accent    = "#${normal_blue}"
-bright_fg = "#${bright_white}"
-fg        = "#${normal_white}"
+accent    = "#${accent}"
+bright_fg = "#${fg_bright}"
+fg        = "#${fg_dim}"
 green     = "#${normal_green}"
 yellow    = "#${normal_yellow}"
 red       = "#${normal_red}"