diff --git a/src/arts/prefs/README.md b/src/arts/prefs/README.md
index d2934ebd2..d3ba93917 100644
--- a/src/arts/prefs/README.md
+++ b/src/arts/prefs/README.md
@@ -20,8 +20,10 @@ Decisiones vigentes:
   `data-motion`, `data-sound` y `data-haptic`.
 - `theme`, `mode` y `density` visuales pertenecen a `ActiveEidos`, no al
   preset core de `prefs`, `ActiveApp` ni `ActiveUix`.
-- `themeDimension(...)` y `densityDimension(...)` quedan como factories
-  legacy/custom para apps ajenas a UIX; no usarlas en shells UIX nuevas.
+- No hay `themeDimension(...)` ni `densityDimension(...)` en el catalogo
+  publico de prefs: si una app necesita dimensiones custom, usa las
+  primitivas genericas (`enumDimension`, `stringDimension`, etc.) o una
+  `PrefsDimension` propia.
 
 ## Composition Rule
 
diff --git a/src/arts/prefs/dimensions/density.ts b/src/arts/prefs/dimensions/density.ts
deleted file mode 100644
index c31f1da93..000000000
--- a/src/arts/prefs/dimensions/density.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-import { DENSITIES, type Density } from '$libs/density';
-import type { PrefsDimension } from '$libs/prefs';
-
-export interface DensityDimensionOptions {
-	readonly catalog?: readonly Density[];
-	readonly default?: Density;
-}
-
-/**
- * @deprecated UIX visual density belongs to `ActiveEidos`, not to the
- * standard prefs preset. Keep this only for legacy/custom app schemas
- * outside UIX.
- */
-export function densityDimension(
-	options: DensityDimensionOptions = {}
-): PrefsDimension<Density> {
-	const catalog = options.catalog ?? DENSITIES;
-	const fallback = options.default ?? 'comfortable';
-	return {
-		defaultValue: fallback,
-		validate(value) {
-			if (typeof value !== 'string') return { ok: false, reason: 'unsupported_density' };
-			if (!catalog.includes(value as Density)) {
-				return { ok: false, reason: 'unsupported_density' };
-			}
-			return { ok: true, value: value as Density };
-		},
-		catalog: () => catalog
-	};
-}
diff --git a/src/arts/prefs/dimensions/index.ts b/src/arts/prefs/dimensions/index.ts
index 5f2c58216..26344baa9 100644
--- a/src/arts/prefs/dimensions/index.ts
+++ b/src/arts/prefs/dimensions/index.ts
@@ -2,9 +2,8 @@
  * Built-in `PrefsDimension` catalog. Each dimension is its own factory
  * — `localeDimension({...})`, `motionDimension({...})` — and the
  * `standardPrefsDimensions(catalog)` preset composes the canonical set.
- * Visual factories such as `themeDimension` and `densityDimension` remain
- * importable for app-specific schemas, but they are not part of the standard
- * core preset; Eidos owns visual theme/mode/density by default.
+ * Visual theme/mode/density are not prefs dimensions in UIX; Eidos owns them
+ * through its own sources.
  *
  * Application-specific dimensions go alongside these, either by reusing
  * the primitive factories (`booleanDimension`, `enumDimension`, …) or
@@ -14,8 +13,6 @@
 
 export { localeDimension } from './locale.ts';
 export { languageDimension } from './language.ts';
-export { themeDimension } from './theme.ts';
-export { densityDimension } from './density.ts';
 export { motionDimension } from './motion.ts';
 export { soundDimension } from './sound.ts';
 export { hapticDimension } from './haptic.ts';
diff --git a/src/arts/prefs/dimensions/theme.ts b/src/arts/prefs/dimensions/theme.ts
deleted file mode 100644
index ee7160ab9..000000000
--- a/src/arts/prefs/dimensions/theme.ts
+++ /dev/null
@@ -1,49 +0,0 @@
-import type { PrefsDimension } from '$libs/prefs';
-import {
-	resolveTheme,
-	THEMES_INTENT,
-	type ThemeEffective,
-	type ThemeIntent
-} from '$libs/theme';
-
-export interface ThemeDimensionOptions {
-	/**
-	 * Allowed intent values. Defaults to the full `THEMES_INTENT`
-	 * (`'light' | 'dark' | 'system'`). Apps that don't want users to
-	 * follow the OS pass `['light', 'dark']`.
-	 */
-	readonly intents?: readonly ThemeIntent[];
-	/**
-	 * Final fallback applied when neither intent nor `env.colorScheme`
-	 * provide a value. Must be a `ThemeEffective`.
-	 */
-	readonly default?: ThemeEffective;
-}
-
-/**
- * @deprecated UIX visual mode belongs to `ActiveEidos`, not to the standard
- * prefs preset. Keep this only for legacy/custom app schemas outside UIX.
- *
- * `TIntent` includes `'system'`, `TEffective` does not: `resolve` folds
- * `'system'` into a concrete `'light' | 'dark'` using `env.colorScheme`.
- */
-export function themeDimension(
-	options: ThemeDimensionOptions = {}
-): PrefsDimension<ThemeIntent, ThemeEffective> {
-	const intents = options.intents ?? THEMES_INTENT;
-	const fallback = options.default ?? 'light';
-	return {
-		defaultValue: fallback,
-		validate(value) {
-			if (typeof value !== 'string') return { ok: false, reason: 'unsupported_theme' };
-			if (!intents.includes(value as ThemeIntent)) {
-				return { ok: false, reason: 'unsupported_theme' };
-			}
-			return { ok: true, value: value as ThemeIntent };
-		},
-		resolve(intent, env) {
-			return resolveTheme(intent, env.colorScheme, fallback);
-		},
-		catalog: () => intents
-	};
-}
diff --git a/src/arts/prefs/index.ts b/src/arts/prefs/index.ts
index b998bac96..c55f76407 100644
--- a/src/arts/prefs/index.ts
+++ b/src/arts/prefs/index.ts
@@ -31,7 +31,6 @@ export type { EnginePrefs, EnginePrefsOptions } from './types.ts';
 export {
 	booleanDimension,
 	currencyDimension,
-	densityDimension,
 	directionDimension,
 	enumDimension,
 	hapticDimension,
@@ -41,7 +40,6 @@ export {
 	numberDimension,
 	soundDimension,
 	stringDimension,
-	themeDimension,
 	timezoneDimension,
 	unitSystemDimension
 } from './dimensions/index.ts';
diff --git a/src/arts/prefs/test/active-prefs.svelte.test.ts b/src/arts/prefs/test/active-prefs.svelte.test.ts
index c2292a02e..ab031f286 100644
--- a/src/arts/prefs/test/active-prefs.svelte.test.ts
+++ b/src/arts/prefs/test/active-prefs.svelte.test.ts
@@ -2,15 +2,14 @@ import { describe, expect, it, vi } from 'vitest';
 import {
 	booleanDimension,
 	enumDimension,
-	localeDimension,
-	themeDimension
+	localeDimension
 } from '$prefs';
 import { createActivePrefs } from '../active-prefs.svelte.ts';
 import { PrefsReservedKeyError } from '../errors.ts';
 
 const schema = {
 	locale: localeDimension({ catalog: ['es-ES', 'en-US'], default: 'es-ES' }),
-	theme: themeDimension({ default: 'light' }),
+	accent: enumDimension(['blue', 'green'] as const, { default: 'blue' }),
 	sidebarCollapsed: booleanDimension({ default: false }),
 	notifications: enumDimension(['all', 'mentions', 'none'] as const, { default: 'mentions' })
 };
@@ -20,7 +19,7 @@ describe('createActivePrefs — dimension-as-object surface', () => {
 		const prefs = createActivePrefs({ schema });
 
 		expect(prefs.locale.get()).toBe('es-ES');
-		expect(prefs.theme.get()).toBe('light');
+		expect(prefs.accent.get()).toBe('blue');
 		expect(prefs.sidebarCollapsed.get()).toBe(false);
 		expect(prefs.notifications.get()).toBe('mentions');
 
@@ -39,16 +38,16 @@ describe('createActivePrefs — dimension-as-object surface', () => {
 	it('onChange fires only when the dimension itself changes', () => {
 		const prefs = createActivePrefs({ schema });
 		const localeChange = vi.fn();
-		const themeChange = vi.fn();
+		const accentChange = vi.fn();
 		prefs.locale.onChange(localeChange);
-		prefs.theme.onChange(themeChange);
+		prefs.accent.onChange(accentChange);
 
 		prefs.locale.set('en-US');
 		expect(localeChange).toHaveBeenCalledWith('en-US');
-		expect(themeChange).not.toHaveBeenCalled();
+		expect(accentChange).not.toHaveBeenCalled();
 
-		prefs.theme.set('dark');
-		expect(themeChange).toHaveBeenCalledWith('dark');
+		prefs.accent.set('green');
+		expect(accentChange).toHaveBeenCalledWith('green');
 
 		prefs.dispose();
 	});
@@ -83,9 +82,9 @@ describe('createActivePrefs — dimension-as-object surface', () => {
 	it('state.snapshot reflects the latest commit', () => {
 		const prefs = createActivePrefs({ schema });
 		const v0 = prefs.state.version;
-		prefs.theme.set('dark');
+		prefs.accent.set('green');
 		expect(prefs.state.version).toBe(v0 + 1);
-		expect(prefs.state.effective.theme).toBe('dark');
+		expect(prefs.state.effective.accent).toBe('green');
 		prefs.dispose();
 	});
 });
diff --git a/src/arts/prefs/test/engine-prefs.test.ts b/src/arts/prefs/test/engine-prefs.test.ts
index bd6c653df..a5b2b9d12 100644
--- a/src/arts/prefs/test/engine-prefs.test.ts
+++ b/src/arts/prefs/test/engine-prefs.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it, vi } from 'vitest';
-import { booleanDimension, enumDimension, localeDimension, themeDimension } from '$prefs';
+import { booleanDimension, enumDimension, localeDimension } from '$prefs';
 import { createEnginePrefs } from '../engine-prefs.ts';
 import {
 	PrefsDisposedError,
@@ -9,7 +9,6 @@ import {
 
 const baseSchema = {
 	locale: localeDimension({ catalog: ['es-ES', 'en-US'], default: 'es-ES' }),
-	theme: themeDimension({ default: 'light' }),
 	flag: booleanDimension({ default: false }),
 	mode: enumDimension(['compact', 'roomy'] as const, { default: 'roomy' })
 };
diff --git a/src/libs/prefs/index.ts b/src/libs/prefs/index.ts
index 4a02f3dbe..e9a99ce60 100644
--- a/src/libs/prefs/index.ts
+++ b/src/libs/prefs/index.ts
@@ -6,7 +6,7 @@
  * is generic over a `PrefsSchema = Record<string, PrefsDimension>` and
  * exposes one slot per dimension.
  *
- * Built-in dimensions (`localeDimension`, `themeDimension`, …) live in
+ * Built-in dimensions (`localeDimension`, `directionDimension`, …) live in
  * `arts/prefs/dimensions/*` so the bundle can pick exactly which ones
  * to ship.
  */
diff --git a/src/libs/prefs/test/resolve-prefs.test.ts b/src/libs/prefs/test/resolve-prefs.test.ts
index c1e328c74..f2764e5f3 100644
--- a/src/libs/prefs/test/resolve-prefs.test.ts
+++ b/src/libs/prefs/test/resolve-prefs.test.ts
@@ -4,8 +4,7 @@ import {
 	directionDimension,
 	enumDimension,
 	languageDimension,
-	localeDimension,
-	themeDimension
+	localeDimension
 } from '$prefs';
 import { resolvePrefs } from '../resolve-prefs.ts';
 
@@ -13,7 +12,6 @@ describe('resolvePrefs — schema-generic resolver', () => {
 	const schema = {
 		language: languageDimension({ catalog: ['es', 'en'], default: 'es' }),
 		locale: localeDimension({ catalog: ['es-ES', 'en-US'], default: 'es-ES' }),
-		theme: themeDimension({ default: 'light' }),
 		direction: directionDimension(),
 		flag: booleanDimension({ default: false }),
 		mode: enumDimension(['compact', 'roomy'] as const, { default: 'roomy' })
@@ -23,7 +21,6 @@ describe('resolvePrefs — schema-generic resolver', () => {
 		const eff = resolvePrefs({ schema, environment: {}, intent: {} });
 		expect(eff.language).toBe('es');
 		expect(eff.locale).toBe('es-ES');
-		expect(eff.theme).toBe('light');
 		expect(eff.flag).toBe(false);
 		expect(eff.mode).toBe('roomy');
 	});
@@ -41,11 +38,10 @@ describe('resolvePrefs — schema-generic resolver', () => {
 	it('environment fills dimensions that have a fromEnvironment hook', () => {
 		const eff = resolvePrefs({
 			schema,
-			environment: { locales: ['en-US'], colorScheme: 'dark' },
+			environment: { locales: ['en-US'] },
 			intent: {}
 		});
 		expect(eff.locale).toBe('en-US');
-		expect(eff.theme).toBe('dark');
 	});
 
 	it('drops invalid intent silently (resolver never throws)', () => {
diff --git a/src/uix/sema/exports.ts b/src/uix/sema/exports.ts
index 26d417a72..7ccf659d8 100644
--- a/src/uix/sema/exports.ts
+++ b/src/uix/sema/exports.ts
@@ -65,7 +65,6 @@ export {
 	applyMapOverrides,
 	type EffectiveSignature,
 	type HapticSignature,
-	type SemaActiveChannel,
 	type SemaCascadeRule,
 	type SemaChannelId,
 	type SemaChannelSignatures,
diff --git a/src/uix/sema/resolver.ts b/src/uix/sema/resolver.ts
index a79e9728a..55a8ee415 100644
--- a/src/uix/sema/resolver.ts
+++ b/src/uix/sema/resolver.ts
@@ -55,9 +55,6 @@ export type {
 	SoundSignature
 } from './sema-map';
 
-/** @deprecated kept for one cycle; use `SemaChannelId`. */
-export type SemaActiveChannel = SemaChannelId;
-
 /**
  * Single cascade rule. Identical shape to a CSS rule — a selector that
  * matches the target's data-attrs (state from morfo + event tokens
diff --git a/src/uix/sema/sema-map.ts b/src/uix/sema/sema-map.ts
index 7165da37b..3bf7683e2 100644
--- a/src/uix/sema/sema-map.ts
+++ b/src/uix/sema/sema-map.ts
@@ -110,9 +110,6 @@ export interface SemaChannelSignatures {
  */
 export type SemaChannelId = keyof SemaChannelSignatures | (string & {});
 
-/** @deprecated kept for one cycle; use `SemaChannelId`. */
-export type SemaActiveChannel = SemaChannelId;
-
 /**
  * Phase 6 of the codex refactor (`refactorizacion_codex.md`):
  * `SemaRuntimeChannelId` is the FORWARD-LOOKING type for `channels`