diff --git a/continue.md b/continue.md
index d94dc7ed8..96b22e1e1 100644
--- a/continue.md
+++ b/continue.md
@@ -38,9 +38,13 @@ Actualizacion 2026-05-15:
     `areAllTimeSegmentsFilledDOM(...)` del helper de fecha.
   - Cobertura nueva para DateRangeField: validación de rango y foco de label
     via `ActiveDom`.
+  - Cobertura ampliada para DateFieldProvider: validación, sync de segmentos
+    date/time y commit solo cuando los segmentos renderizados estan completos.
+  - Correccion DateField: el announcer se inicializa con `$effect` en vez de
+    `onMount()` dentro de la clase.
   - Validado por fase:
     - `npm run check` -> 0 errores, 0 warnings.
-    - `npm run test` -> 184 archivos, 2077 tests OK.
+    - `npm run test` -> 184 archivos, 2080 tests OK.
     - tests focales de Select/Popover/Toast/RangeCalendar -> 11 tests OK.
     - tests focales Dialog/Drawer/Popover/Select -> 10 tests OK.
     - `command-provider.svelte.test.ts` -> 2 tests OK.
@@ -52,6 +56,7 @@ Actualizacion 2026-05-15:
     - `time-range-field-provider.svelte.test.ts` -> 3 tests OK.
     - `time-field-provider.svelte.test.ts` -> 3 tests OK.
     - `date-range-field-provider.svelte.test.ts` -> 3 tests OK.
+    - `date-field-provider.svelte.test.ts` -> 7 tests OK.
     - guardia `rg "from './.*provider\\.svelte'" src/uix/soma/components -g 'exports.ts'`
       -> solo queda `select/components/select-provider.svelte`, que es wrapper
       publico, no runtime provider.
diff --git a/src/uix/soma/SOMA_ARCHITECTURE.md b/src/uix/soma/SOMA_ARCHITECTURE.md
index 1058c16dc..17ec28009 100644
--- a/src/uix/soma/SOMA_ARCHITECTURE.md
+++ b/src/uix/soma/SOMA_ARCHITECTURE.md
@@ -462,7 +462,7 @@ Los tests por componente estan creciendo desde las piezas de mayor riesgo. A
 - `range-calendar/range-calendar-provider.svelte.test.ts` — placeholder,
   orden de endpoints y limites min/max.
 - `date-field/date-field-provider.svelte.test.ts` — helpers UI de segmentos,
-  lectura DOM y navegación por `ActiveDom`.
+  lectura DOM, navegación por `ActiveDom`, validación y commit segmentado.
 - `date-picker/date-picker-provider.svelte.test.ts` — registro runtime y
   cierre controlado por `closeOnDateSelect`.
 - `date-range-picker/date-range-picker-provider.svelte.test.ts` — registro
diff --git a/src/uix/soma/components/date-field/date-field-provider.svelte.test.ts b/src/uix/soma/components/date-field/date-field-provider.svelte.test.ts
index 17cd346ea..551b77822 100644
--- a/src/uix/soma/components/date-field/date-field-provider.svelte.test.ts
+++ b/src/uix/soma/components/date-field/date-field-provider.svelte.test.ts
@@ -1,9 +1,21 @@
 // @vitest-environment jsdom
 
-import { describe, expect, it, vi } from 'vitest';
+import { afterEach, describe, expect, it, vi } from 'vitest';
 
 import { createActiveDom } from '$adom';
-import { CalendarDate } from '$libs/days';
+import { CalendarDate, CalendarDateTime } from '$libs/days';
+import type {
+	DateOnInvalid,
+	DateValidator,
+	DateValue,
+	EditableSegmentPart,
+	Granularity,
+	HourCycle
+} from '$libs/days';
+import { state } from '$libs/reactive';
+import type { Morfo } from '$uix/morfo';
+import { Soma } from '$soma/core/soma.svelte';
+import { createSomaRuntime, type SomaRuntimeSources } from '$soma/runtime.svelte';
 import {
 	areAllSegmentsFilledDOM,
 	getFirstSegment,
@@ -12,6 +24,9 @@ import {
 	initSegmentStates,
 	isAcceptableSegmentKey
 } from '$soma/datetime';
+import { FieldProvider } from '../field/field-provider.svelte';
+
+import { DateFieldProvider } from './date-field-provider.svelte';
 
 function createField() {
 	const field = document.createElement('div');
@@ -31,7 +46,75 @@ function createField() {
 	return field;
 }
 
+function withEffectRoot<T>(fn: () => T): { result: T; cleanup: () => void } {
+	let result!: T;
+	const cleanup = $effect.root(() => {
+		result = fn();
+	});
+	return { result, cleanup };
+}
+
+function installSomaHarness(hourCycle?: HourCycle) {
+	const dom = createActiveDom();
+	const soma = {
+		dom,
+		langs: {
+			getLocale: () => 'en-US',
+			ts: (key: string) => key
+		},
+		dates: {
+			getDateOrder: () => 'MDY',
+			getHourCycle: () => hourCycle
+		},
+		prefs: {
+			getDir: () => 'ltr'
+		},
+		logger: {
+			warn: vi.fn()
+		},
+		runtime: (morfo: Morfo, sources: Omit<SomaRuntimeSources, 'dom' | 'eventEngine'>) =>
+			createSomaRuntime(morfo, {
+				dom,
+				translate: (key) => key,
+				...sources
+			})
+	} as unknown as Soma;
+
+	vi.spyOn(Soma, 'require').mockReturnValue(soma);
+	vi.spyOn(FieldProvider, 'get').mockReturnValue(undefined);
+	vi.spyOn(DateFieldProvider.ctx, 'set').mockImplementation((value) => value);
+
+	return { dom };
+}
+
+function createDateFieldOpts() {
+	return {
+		id: state('date-field-root'),
+		ref: state<HTMLElement | null>(null),
+		value: state<DateValue | undefined>(undefined),
+		placeholder: state<DateValue>(new CalendarDate(2026, 1, 1)),
+		readonlySegments: state<EditableSegmentPart[]>([]),
+		validate: state<DateValidator | undefined>(undefined),
+		onInvalid: state<DateOnInvalid | undefined>(undefined),
+		minValue: state<DateValue | undefined>(undefined),
+		maxValue: state<DateValue | undefined>(undefined),
+		disabled: state(false),
+		readonly: state(false),
+		granularity: state<Granularity | undefined>(undefined),
+		hourCycle: state<HourCycle | undefined>(undefined),
+		locale: state('en-US'),
+		hideTimeZone: state(false),
+		required: state(false),
+		errorMessageId: state<string | undefined>(undefined)
+	};
+}
+
 describe('DateField segment helpers', () => {
+	afterEach(() => {
+		vi.restoreAllMocks();
+		document.body.innerHTML = '';
+	});
+
 	it('creates fresh segment state maps for each field instance', () => {
 		const first = initSegmentStates();
 		const second = initSegmentStates();
@@ -79,3 +162,78 @@ describe('DateField segment helpers', () => {
 		dom.dispose();
 	});
 });
+
+describe('DateFieldProvider', () => {
+	afterEach(() => {
+		vi.restoreAllMocks();
+		document.body.innerHTML = '';
+	});
+
+	it('validates custom, min and max constraints for the current value', () => {
+		const { dom } = installSomaHarness();
+		const opts = createDateFieldOpts();
+		opts.value.current = new CalendarDate(2026, 4, 30);
+		opts.minValue.current = new CalendarDate(2026, 5, 1);
+
+		const { result: provider, cleanup } = withEffectRoot(() => DateFieldProvider.create(opts));
+
+		expect(provider.validationStatus).toEqual({ reason: 'min' });
+
+		opts.minValue.current = undefined;
+		opts.maxValue.current = new CalendarDate(2026, 5, 31);
+		opts.value.current = new CalendarDate(2026, 6, 1);
+		expect(provider.validationStatus).toEqual({ reason: 'max' });
+
+		opts.maxValue.current = undefined;
+		opts.validate.current = () => 'Blocked date';
+		expect(provider.validationStatus).toEqual({
+			reason: 'custom',
+			message: 'Blocked date'
+		});
+
+		cleanup();
+		dom.dispose();
+	});
+
+	it('does not commit a value until all rendered date segments are filled', () => {
+		const { dom } = installSomaHarness();
+		const opts = createDateFieldOpts();
+
+		const { result: provider, cleanup } = withEffectRoot(() => DateFieldProvider.create(opts));
+		provider.setFieldNode(createField());
+
+		provider.updateSegment('month', () => '05');
+		expect(opts.value.current).toBeUndefined();
+
+		provider.updateSegment('day', () => '15');
+		expect(opts.value.current).toBeUndefined();
+
+		provider.updateSegment('year', () => '2026');
+		expect(opts.value.current?.year).toBe(2026);
+		expect(opts.value.current?.month).toBe(5);
+		expect(opts.value.current?.day).toBe(15);
+
+		cleanup();
+		dom.dispose();
+	});
+
+	it('syncs padded date and time segments from a concrete value', () => {
+		const { dom } = installSomaHarness(12);
+		const opts = createDateFieldOpts();
+		opts.placeholder.current = new CalendarDateTime(2026, 5, 15, 13, 5, 10);
+		opts.value.current = new CalendarDateTime(2026, 5, 15, 13, 5, 10);
+
+		const { result: provider, cleanup } = withEffectRoot(() => DateFieldProvider.create(opts));
+
+		expect(provider.segmentValues.month).toBe('05');
+		expect(provider.segmentValues.day).toBe('15');
+		expect(provider.segmentValues.year).toBe('2026');
+		expect((provider.segmentValues as { hour: string }).hour).toBe('13');
+		expect((provider.segmentValues as { minute: string }).minute).toBe('05');
+		expect((provider.segmentValues as { second: string }).second).toBe('10');
+		expect((provider.segmentValues as { dayPeriod: 'AM' | 'PM' }).dayPeriod).toBe('PM');
+
+		cleanup();
+		dom.dispose();
+	});
+});
diff --git a/src/uix/soma/components/date-field/date-field-provider.svelte.ts b/src/uix/soma/components/date-field/date-field-provider.svelte.ts
index 53024d493..b1fd08218 100644
--- a/src/uix/soma/components/date-field/date-field-provider.svelte.ts
+++ b/src/uix/soma/components/date-field/date-field-provider.svelte.ts
@@ -1,5 +1,5 @@
 import type { Updater } from 'svelte/store';
-import { untrack, onMount } from 'svelte';
+import { untrack } from 'svelte';
 import { watch } from 'runed';
 import { context, type ProviderOpts, type WithRefOpts } from '../../provider';
 import { attachRef, type RefAttachment } from '$libs/reactive';
@@ -243,7 +243,7 @@ export class DateFieldProvider {
 
 		this.segmentValues = initializeSegmentValues(this.inferredGranularity);
 
-		onMount(() => {
+		$effect(() => {
 			this.announcer = getAnnouncer(this.soma.dom, opts.ref?.current);
 		});