feat(palette): generate every themed config from one scheme

Colours were written down five times: rofi's palette.rasi, the waybar theme,
the kitty theme, the conky and dunst templates, and a MACCHIATO dict inside
udt-accent. Changing scheme meant finding all five, and they had already
drifted: the active waybar theme was Macchiato while theme.css next to it was
Mocha, and nothing imported the latter.

Now a scheme is two files. palette/<scheme>.conf holds the colours under the
scheme's own names, and palette/roles-<scheme>.conf says what each is for.
palette/roles.conf is one `scheme =` line selecting the pair. bin/udt-palette
renders that into each consumer's syntax and install.sh runs it first.

The role map is per-scheme rather than shared because the palettes are
genuinely different shapes: Nord has no `base`, Dracula no `surface0`, and
forcing Catppuccin's names onto them would have meant either renaming their
colours or inventing values. A role names a palette colour with two optional
modifiers, `name/75` for alpha and `name*50` for brightness. The second exists
because GTK's shade() has no palette name to point at.

Ships macchiato, tokyo-night, nord and dracula. --selftest resolves every role
in every scheme and asserts they define the same set, so a scheme that cannot
satisfy a consumer fails at install rather than when someone switches to it.

Verified against the live configs: all 46 waybar colours resolve identically to
the previously active theme including its alpha() and shade() derivations, the
kitty theme is colour-for-colour identical, and the rofi palette has the same
26 values. Generated files are gitignored; switching scheme and switching back
reproduces the originals.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015gbjA2bmswN8jyPDKzrvqe

1 files changed, 12 insertions, 37 deletions

diff --git a/bin/udt-accent b/bin/udt-accent
index 7949597..1a222b5 100755
--- a/bin/udt-accent
+++ b/bin/udt-accent
@@ -21,25 +21,12 @@ import sys
 import tempfile
 from pathlib import Path
 
-# The candidate accents. rosewater and flamingo are excluded as near-neutral
-# tints that capture saturated inputs, and maroon and sapphire as near-duplicate
-# hues of red and sky. lavender sits close to mauve but is kept: it is the
-# desktop-wide fallback, used by Qt, GTK and anything else that needs one fixed
-# accent, so it has to be a value snap() can also return.
-ACCENTS = {
-    "pink":     "#f5bde6",
-    "mauve":    "#c6a0f6",
-    "lavender": "#b7bdf8",
-    "red":    "#ed8796",
-    "peach":  "#f5a97f",
-    "yellow": "#eed49f",
-    "green":  "#a6da95",
-    "teal":   "#8bd5ca",
-    "sky":    "#91d7e3",
-    "blue":   "#8aadf4",
-}
-
-FALLBACK = "lavender"
+# The colour tables are generated: udt-palette renders them from
+# palette/<scheme>.conf and palette/roles-<scheme>.conf, so the accents this
+# snaps to follow whatever scheme is selected. Regenerate with ./install.sh.
+sys.path.insert(0, str(Path(__file__).resolve().parent))
+from udt_colors import ACCENTS, FALLBACK, PALETTE  # noqa: E402
+
 MIN_CHROMA = 10.0
 
 OUTPUT = Path.home() / ".cache" / "wal" / "udt-accent.rasi"
@@ -47,24 +34,12 @@ BORDER_OUTPUT = Path.home() / ".cache" / "wal" / "udt-border.lua"
 DUNSTRC = Path.home() / ".cache" / "wal" / "dunstrc"
 QML_OUTPUT = Path.home() / ".cache" / "wal" / "udt-palette.qml"
 
-# The installed palette, which is a symlink back into this repo. Read rather
-# than duplicated: palette.rasi is the one place the structural colours are
-# written down, and a second copy here would drift the first time one changed.
+# The installed rofi palette, itself generated by udt-palette. Read rather than
+# duplicated so the QML singleton carries exactly the colours rofi uses, under
+# the same names.
 PALETTE_RASI = Path.home() / ".config" / "rofi" / "udt" / "palette.rasi"
 COLORS_JSON = Path.home() / ".cache" / "wal" / "colors.json"
 
-# Catppuccin Macchiato, in pywal's slot order. Firefox is themed from this
-# via pywalfox, which reads colors.json and nothing else.
-MACCHIATO = {
-    "background": "#24273a", "foreground": "#cad3f5", "cursor": "#f4dbd6",
-    "colors": [
-        "#494d64", "#ed8796", "#a6da95", "#eed49f",
-        "#8aadf4", "#f5bde6", "#8bd5ca", "#b8c0e0",
-        "#5b6078", "#ed8796", "#a6da95", "#eed49f",
-        "#8aadf4", "#f5bde6", "#8bd5ca", "#a5adcb",
-    ],
-}
-
 
 def write_atomic(path, content):
     """Write a file atomically, so no reader ever sees it half-written.
@@ -256,7 +231,7 @@ def write_colors_json(name, image):
     palette stays fixed Macchiato while only the accent moves.
     """
     hexval = ACCENTS[name]
-    colors = list(MACCHIATO["colors"])
+    colors = list(PALETTE["colors"])
     # Slots 4 and 12 are pywalfox's link/highlight colour.
     colors[4] = colors[12] = hexval
 
@@ -267,8 +242,8 @@ def write_colors_json(name, image):
         "wallpaper": os.path.realpath(image),
         "alpha": "100",
         "special": {
-            "background": MACCHIATO["background"],
-            "foreground": MACCHIATO["foreground"],
+            "background": PALETTE["background"],
+            "foreground": PALETTE["foreground"],
             "cursor": hexval,
         },
         "colors": {f"color{i}": c for i, c in enumerate(colors)},