feat(themes): full revision of executive-slate — palette rebuild + real whole-swap bar

The executive-slate preset shipped a waybar.css that referenced @base/@accent
with no @define-color block, and no matching waybar.jsonc — so the raw-read
override ran a largely unstyled bar (the item-28 partial-whole-swap defect).
The palette was also flat (base->surface only 1.13x) with a dim accent
(#4D78CC, 3.91 on base).

- Palette: widen surface stepping (base->surface 1.13x -> 1.29x so panels/
  selection/hover separate), brighten the accent (#4D78CC -> #5A8AE6, 3.91 ->
  5.04 on base, now AA text), lift subtext/good/warn/bad a tier, realign ansi,
  soften bright-white (#FFFFFF -> #F0F3F9). text stays 12.5 AAA. Contrast
  checker: all 23 themes x 7 pairings pass.
- Waybar: complete the bespoke bar as a real whole-swap. New waybar.jsonc with
  the full 17-module set (parity with summer-day/night); waybar.css rewritten
  to lead with its own @define-color block and cover every module + state class
  the helper scripts emit (.recording/.activated/.on/.available/.dnd-*/battery).
  Identity: solid, edge-to-edge, sharp corners, accent underline on the active
  workspace.
- Rofi: drop the broken var() idiom for the house *{}/@name convention (split
  border syntax, message/textbox/scrollbar elements for the theme-grid picker).
- CONVENTIONS: Waybar parity rule now names executive-slate as a third
  whole-swap target (was stale at summer-only).

V1: nix flake check --no-build green; strict JSON parse of both files; real
rofi parsed the .rasi cleanly; with executive-slate set active, the module
eval resolves waybar.settings -> the jsonc, waybar.style -> the css, rofi.theme
-> the override rasi, and theme.nix accepts the palette. NOT yet done: on-screen
render of the bar/rofi/desktop (V2/V3) and preview.png (deferred to on-hardware
capture, per the chosen path).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

themes/executive-slate/rofi.rasi

@@ -1,81 +1,119 @@
-/* 
- * Executive Slate Rofi Theme
- * Clean, flat, functional, professional.
+/**
+ * Executive Slate — rofi whole-swap (themes/<slug>/rofi.rasi).
+ * Identity: a flat, sharp-cornered "control panel". No zebra, no glow —
+ * a solid slate window, a recessed surface inputbar, and one accent edge
+ * marking the selected row. The `configuration {}` block is omitted on
+ * purpose — modi/terminal/show-icons come from modules/home/rofi.nix.
+ * Element structure mirrors the generated theme so the theme-grid
+ * picker's per-invocation -theme-str (vertical cards) still lays out.
  */
 
 * {
+    base:      #191C24;
+    surface:   #2A3040;
+    overlay:   #3E4759;
+    text:      #D7DDEA;
+    subtext:   #9AA5BB;
+    muted:     #5C6578;
+    accent:    #5A8AE6;
+    accentAlt: #86A9F2;
+
+    font: "Inter 13";
     background-color: transparent;
-    text-color: var(text, #D4DAE8);
-    font: "Inter 15";
+    text-color: @text;
 }
 
 window {
-    width: 600px;
-    background-color: var(base, #1A1D24);
+    background-color: @base;
     border: 1px;
-    border-color: var(overlay, #333947);
+    border-color: @overlay;
     border-radius: 4px;
-    padding: 24px;
+    width: 40%;
+    location: center;
+    anchor: center;
+    padding: 12px;
 }
 
 mainbox {
-    spacing: 12px;
+    background-color: transparent;
+    children: [ inputbar, message, listview ];
+    spacing: 10px;
 }
 
 inputbar {
-    background-color: var(surface, #232731);
+    children: [ prompt, entry ];
+    background-color: @surface;
+    text-color: @text;
     border: 1px;
-    border-color: var(overlay, #333947);
+    border-color: @overlay;
     border-radius: 4px;
     padding: 10px 14px;
     spacing: 10px;
-    children: [ prompt, entry ];
 }
 
-prompt {
-    text-color: var(accent, #4D78CC);
-}
+prompt { text-color: @accent; }
 
 entry {
-    placeholder: "Type to filter...";
-    placeholder-color: var(subtext, #8792A6);
+    text-color: @text;
+    cursor: text;
+    placeholder: "Type to filter…";
+    placeholder-color: @muted;
 }
 
 listview {
-    lines: 7;
-    spacing: 4px;
+    background-color: transparent;
+    columns: 1;
+    lines: 8;
+    dynamic: true;
     scrollbar: false;
-    border: 0px;
+    spacing: 4px;
+    padding: 4px 0px 0px 0px;
 }
 
 element {
-    padding: 8px 14px;
+    background-color: transparent;
+    text-color: @text;
+    orientation: horizontal;
     border-radius: 4px;
+    padding: 9px 14px;
     spacing: 12px;
 }
 
-element normal.normal, element alternate.normal {
+element normal.normal,
+element alternate.normal {
     background-color: transparent;
 }
 
-/* Functional highlight: solid surface color with a subtle accent edge */
+/* The one highlight: a solid surface row with an accent edge. */
 element selected.normal {
-    background-color: var(surface, #232731);
-    text-color: var(text, #D4DAE8);
-    border: 0 0 0 4px;
-    border-color: var(accent, #4D78CC);
+    background-color: @surface;
+    text-color: @text;
+    border: 0px 0px 0px 3px;
+    border-color: @accent;
 }
 
 element-icon {
-    size: 24px;
     background-color: transparent;
+    size: 36px;
+    cursor: inherit;
 }
 
 element-text {
     background-color: transparent;
+    text-color: inherit;
+    highlight: bold;
     vertical-align: 0.5;
 }
 
-element-text selected {
-    text-color: var(text, #D4DAE8);
+message { padding: 0px; }
+
+textbox {
+    background-color: @surface;
+    text-color: @text;
+    border: 1px;
+    border-color: @overlay;
+    border-radius: 4px;
+    padding: 9px 14px;
 }
+
+scrollbar { width: 0px; }