diff --git a/.changeset/30134-client-next-week-year-end.md b/.changeset/30134-client-next-week-year-end.md
new file mode 100644
index 00000000000..2fe0cc94cda
--- /dev/null
+++ b/.changeset/30134-client-next-week-year-end.md
@@ -0,0 +1,10 @@
+---
+'@object-ui/core': patch
+---
+
+fix(core): the client date-macro resolver answers `{next_week_end}` and `{next_year_end}`
+
+Clause-②: no
+Metadata-protocol: none
+
+`resolveDateMacros` now resolves `{next_week_end}` (Sunday of next week, Monday-start weeks) and `{next_year_end}` (Dec 31 of next year), the two fixed tokens `@objectstack/spec`'s `DATE_MACRO_TOKENS` declared that the Console passed through as raw text. A test now reads `DATE_MACRO_TOKENS` from the spec and fails on any token the client leaves unresolved, so the two lists cannot drift again.
diff --git a/ui/packages/core/src/utils/__tests__/date-macros.specTokens-30134.test.ts b/ui/packages/core/src/utils/__tests__/date-macros.specTokens-30134.test.ts
new file mode 100644
index 00000000000..951eb94078c
--- /dev/null
+++ b/ui/packages/core/src/utils/__tests__/date-macros.specTokens-30134.test.ts
@@ -0,0 +1,46 @@
+/**
+ * ObjectUI
+ * Copyright (c) 2024-present ObjectStack Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import { describe, it, expect } from 'vitest';
+import { DATE_MACRO_TOKENS } from '@objectstack/spec/data';
+import { resolveDateMacros } from '../date-macros';
+
+/**
+ * The client resolver answers every fixed token the spec declares
+ * (objectstack#30134). The list is read from the spec, never copied, so a
+ * token added there without a resolver entry here fails this file.
+ */
+describe('resolveDateMacros covers the spec vocabulary (objectstack#30134)', () => {
+  // Monday 2026-05-25, local noon.
+  const now = new Date(2026, 4, 25, 12, 0, 0);
+
+  it.each(DATE_MACRO_TOKENS.map((t) => [t]))('{%s} resolves to a day or an instant', (token) => {
+    const out = resolveDateMacros(`{${token}}`, now);
+    expect(out).not.toContain('{');
+    expect(out).toMatch(/^\d{4}-\d{2}-\d{2}(T|$)/);
+  });
+
+  it('{next_week_end} is the Sunday of next week (Monday-start weeks)', () => {
+    // From a Monday.
+    expect(resolveDateMacros('{next_week_end}', now)).toBe('2026-06-07');
+    // From a Sunday: still the week after the one that Sunday closes.
+    expect(resolveDateMacros('{next_week_end}', new Date(2026, 4, 31, 12))).toBe('2026-06-07');
+    // Across a year boundary: Wednesday 2026-12-30 → next week is Jan 4–10, 2027.
+    const dec30 = new Date(2026, 11, 30, 12);
+    expect(resolveDateMacros('{next_week_start}', dec30)).toBe('2027-01-04');
+    expect(resolveDateMacros('{next_week_end}', dec30)).toBe('2027-01-10');
+  });
+
+  it('{next_year_end} is Dec 31 of next year', () => {
+    expect(resolveDateMacros('{next_year_end}', now)).toBe('2027-12-31');
+    // On Dec 31 itself the answer is a full year out, not today.
+    expect(resolveDateMacros('{next_year_end}', new Date(2026, 11, 31, 12))).toBe('2027-12-31');
+    // On Jan 1 the year has rolled: next year is 2028.
+    expect(resolveDateMacros('{next_year_end}', new Date(2027, 0, 1, 12))).toBe('2028-12-31');
+  });
+});
diff --git a/ui/packages/core/src/utils/date-macros.ts b/ui/packages/core/src/utils/date-macros.ts
index 79f2da54aee..39ecf578b4f 100644
--- a/ui/packages/core/src/utils/date-macros.ts
+++ b/ui/packages/core/src/utils/date-macros.ts
@@ -27,8 +27,10 @@ import { getDisplayTimeZone } from './date-display.js';
  *   - last_month_start / last_month_end
  *   - last_quarter_start / last_quarter_end
  *   - last_year_start / last_year_end
- *   - next_week_start / next_month_start / next_quarter_start / next_year_start
- *   - next_month_end / next_quarter_end
+ *   - next_week_start / next_week_end
+ *   - next_month_start / next_month_end
+ *   - next_quarter_start / next_quarter_end
+ *   - next_year_start / next_year_end
  *
  * Parameterised tokens (match `N` as any positive integer):
  *   - {N_minutes_ago} / {N_minutes_from_now}       (returns full ISO timestamp)
@@ -39,9 +41,9 @@ import { getDisplayTimeZone } from './date-display.js';
  *   - {N_years_ago}   / {N_years_from_now}
  *
  * The canonical grammar is also published as part of the platform contract at
- * `@objectstack/spec` → `DATE_MACRO_TOKENS` / `DATE_MACRO_PARAM_RE`. Keep this
- * file in sync with the spec; the duplication is temporary until the next
- * coordinated `@objectstack/spec` release.
+ * `@objectstack/spec` → `DATE_MACRO_TOKENS` / `DATE_MACRO_PARAM_RE`. Every
+ * fixed token there must resolve here; `date-macros.specTokens-30134.test.ts`
+ * reads the spec list and fails on any token this resolver leaves unresolved.
  *
  * Walks any plain-object / array structure recursively. Non-string values
  * (and unknown tokens) are passed through untouched.
@@ -128,11 +130,13 @@ export function resolveDateMacros<T = any>(filter: T, now: Date = new Date()): T
     last_year_end: () => isoDate(new Date(today.getFullYear() - 1, 11, 31)),
 
     next_week_start: () => isoDate(addDays(startOfWeek(today), 7)),
+    next_week_end: () => isoDate(addDays(startOfWeek(today), 13)),
     next_month_start: () => isoDate(addMonths(startOfMonth(today), 1)),
     next_month_end: () => isoDate(endOfMonth(addMonths(startOfMonth(today), 1))),
     next_quarter_start: () => isoDate(addMonths(startOfQuarter(today), 3)),
     next_quarter_end: () => isoDate(endOfQuarter(addMonths(startOfQuarter(today), 3))),
     next_year_start: () => isoDate(new Date(today.getFullYear() + 1, 0, 1)),
+    next_year_end: () => isoDate(new Date(today.getFullYear() + 1, 11, 31)),
   };
 
   // Aliases: bare {week_start} etc. mean the current period.