feat: centralize theme palette + add waybar bluetooth module

Theme centralization:
- theme/colors.json is now the single source of truth for the palette.
- New theme/generate-theme.py renders, at install time, the three derived
  artifacts into ~/.config: colors.css (waybar/wofi @import), mako config,
  and hyprlock-colors.conf (hyprlang $tn_* variables).
- theme/colors.css removed from the repo (now generated); install.sh calls
  the generator instead of the old inline mako snippet.
- hyprlock.conf sources the generated color file and uses $tn_* variables
  instead of hardcoded rgba() values.
- Generator covered by theme/test_generate_theme.py.

Bluetooth:
- Added waybar built-in bluetooth module (config.jsonc + style.css), with
  bluez/bluez-utils in packages.txt.

Includes design spec and implementation plan under docs/superpowers/.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

theme/generate-theme.py

@@ -0,0 +1,85 @@
+# theme/generate-theme.py
+"""Generate desktop config artifacts from theme/colors.json (single source of truth)."""
+import json
+import os
+
+
+def load_palette(path):
+    with open(path) as f:
+        return json.load(f)
+
+
+def hex_to_rgb(h):
+    h = h.lstrip("#")
+    return (int(h[0:2], 16), int(h[2:4], 16), int(h[4:6], 16))
+
+
+def hex_to_hyprlock_rgba(h):
+    return f"rgba({h.lstrip('#')}ff)"
+
+
+# (key in colors.json) -> (css variable suffix)
+_CSS_MAP = [
+    ("background", "bg"), ("background_alt", "bg-alt"), ("background_high", "bg-high"),
+    ("foreground", "fg"), ("foreground_dim", "fg-dim"), ("foreground_muted", "fg-muted"),
+    ("blue", "blue"), ("green", "green"), ("yellow", "yellow"),
+    ("red", "red"), ("magenta", "magenta"), ("cyan", "cyan"),
+]
+_ALPHA_VARIANTS = [("a90", "0.90"), ("a95", "0.95"), ("a96", "0.96")]
+
+
+def render_mako_config(pal):
+    return (
+        f"background-color={pal['background']}\n"
+        f"text-color={pal['foreground']}\n"
+        "border-size=2\n"
+        f"border-color={pal['blue']}\n"
+        "default-timeout=4000\n"
+    )
+
+
+def render_colors_css(pal):
+    lines = ["/* Tomorrow Night - GENERATED from colors.json by generate-theme.py. DO NOT EDIT. */", ""]
+    for key, suffix in _CSS_MAP:
+        lines.append(f"@define-color tn-{suffix} {pal[key]};")
+    lines.append("")
+    r, g, b = hex_to_rgb(pal["background"])
+    for name, alpha in _ALPHA_VARIANTS:
+        lines.append(f"@define-color tn-bg-{name} rgba({r}, {g}, {b}, {alpha});")
+    return "\n".join(lines) + "\n"
+
+
+# (colors.json key) -> (hyprlock variable name)
+_HYPRLOCK_MAP = [
+    ("foreground", "tn_fg"), ("foreground_dim", "tn_fg_dim"),
+    ("background_alt", "tn_bg_alt"), ("blue", "tn_blue"),
+    ("red", "tn_red"), ("green", "tn_green"),
+]
+
+
+def render_hyprlock_colors(pal):
+    lines = ["# GENERATED from colors.json by generate-theme.py. DO NOT EDIT."]
+    for key, var in _HYPRLOCK_MAP:
+        lines.append(f"${var} = {hex_to_hyprlock_rgba(pal[key])}")
+    return "\n".join(lines) + "\n"
+
+
+def main():
+    here = os.path.dirname(os.path.abspath(__file__))
+    pal = load_palette(os.path.join(here, "colors.json"))
+    cfgdir = os.path.expanduser("~/.config")
+    os.makedirs(os.path.join(cfgdir, "theme"), exist_ok=True)
+    os.makedirs(os.path.join(cfgdir, "mako"), exist_ok=True)
+    writes = {
+        os.path.join(cfgdir, "theme", "colors.css"): render_colors_css(pal),
+        os.path.join(cfgdir, "mako", "config"): render_mako_config(pal),
+        os.path.join(cfgdir, "theme", "hyprlock-colors.conf"): render_hyprlock_colors(pal),
+    }
+    for path, content in writes.items():
+        with open(path, "w") as f:
+            f.write(content)
+        print(f"  generated {path}")
+
+
+if __name__ == "__main__":
+    main()