chore(eidos): fold color-picker neutral hovers into the --state-* layer

color-picker.css is clean (committed in 72e8fb57), so the deferred color-picker fold is
unblocked. The trigger + eye-dropper neutral hovers move from bespoke
--color-picker-{trigger,eye-dropper}-hover-bg to the shared state layer:

  background: var(--color-picker-trigger-hover-bg)
  -> background-image: linear-gradient(var(--state-hover), var(--state-hover))

The trigger is filled (--color-picker-trigger-bg base), so the tint overlays via
background-image (not background, which would replace the base). Kept the border-color /
text-color hover shifts. Removed the 2 now-orphan recipe tokens + regenerated base.css.

Leaves tabs as the only neutral component still on a bespoke hover (blocked by the other
session's tabs.css WIP).

Verified: color-picker hover tokens gone from base.css; color-picker.css uses --state-hover
x2; eidos suite 15 failed (pre-existing, unchanged) / 255 passed.

src/uix/eidos/components/color-picker/color-picker.css

@@ -161,7 +161,7 @@
 }
 
 [data-color-picker-trigger]:hover:not([data-disabled]) {
-	background: var(--color-picker-trigger-hover-bg);
+	background-image: linear-gradient(var(--state-hover), var(--state-hover));
 	border-color: var(--color-picker-trigger-hover-border);
 }
 
@@ -577,7 +577,7 @@
 }
 
 [data-color-picker-eye-dropper]:hover:not([data-disabled]):not([data-unsupported]) {
-	background: var(--color-picker-eye-dropper-hover-bg);
+	background-image: linear-gradient(var(--state-hover), var(--state-hover));
 	color: var(--color-picker-eye-dropper-hover-color);
 }
 

src/uix/eidos/generated/base.css

@@ -1520,7 +1520,6 @@
 	--color-picker-trigger-border: var(--color-border-default);
 	--color-picker-trigger-bg: var(--color-surface-default);
 	--color-picker-trigger-color: var(--color-content-primary);
-	--color-picker-trigger-hover-bg: var(--color-surface-overlay);
 	--color-picker-trigger-hover-border: var(--color-border-strong);
 	--color-picker-trigger-swatch-size-sm: calc(var(--control-height-sm) - var(--space-2));
 	--color-picker-trigger-swatch-size-md: calc(var(--control-height-md) - var(--space-2));
@@ -1548,7 +1547,6 @@
 	--color-picker-eye-dropper-radius: var(--radius-md);
 	--color-picker-eye-dropper-bg: transparent;
 	--color-picker-eye-dropper-color: var(--color-content-secondary);
-	--color-picker-eye-dropper-hover-bg: var(--color-surface-overlay);
 	--color-picker-eye-dropper-hover-color: var(--color-content-primary);
 	--color-picker-hue-0: hsl(0, 100%, 50%);
 	--color-picker-hue-60: hsl(60, 100%, 50%);

src/uix/eidos/lib/recipes/base.ts

@@ -1402,7 +1402,6 @@ export const THEME_BASE_RECIPE_TOKENS = {
 		'trigger-border': 'var(--color-border-default)',
 		'trigger-bg': 'var(--color-surface-default)',
 		'trigger-color': 'var(--color-content-primary)',
-		'trigger-hover-bg': 'var(--color-surface-overlay)',
 		'trigger-hover-border': 'var(--color-border-strong)',
 		'trigger-swatch-size-sm': 'calc(var(--control-height-sm) - var(--space-2))',
 		'trigger-swatch-size-md': 'calc(var(--control-height-md) - var(--space-2))',
@@ -1445,7 +1444,6 @@ export const THEME_BASE_RECIPE_TOKENS = {
 		'eye-dropper-radius': 'var(--radius-md)',
 		'eye-dropper-bg': 'transparent',
 		'eye-dropper-color': 'var(--color-content-secondary)',
-		'eye-dropper-hover-bg': 'var(--color-surface-overlay)',
 		'eye-dropper-hover-color': 'var(--color-content-primary)',
 
 		// Hue spectrum — drives the hue ring + saturation overlay. These