feat(viewer): MSK datetime + done-cutoff expander [v0.3.0]

Closes 2 more UX-round1 fixes (5/6 done; task-numbers remains
design-first cross-repo, awaiting user decision).

ux-full-datetime: formatMskDateTime(iso) → "YYYY-MM-DD HH:MM МСК".
UTC+3 fixed (no-DST since 2011). Tooltip retains full ISO for
copy-paste. Relative age stays in card-meta. Mirrored in board.js
renderCard re-render path.

ux-done-cutoff: source unchanged (render-side cutoff). Done column
sorts by last_commit_iso desc, first 10 visible, rest get
data-overflow="true" (CSS hides). Column bottom gets
"show N more" expander; click toggles col.show-overflow class +
button text "collapse". Non-done columns untouched.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.tasks/STATUS.md

@@ -84,11 +84,10 @@ _Updated: 2026-05-22_
 
 ---
 
-## ⚪ [board-viewer-ux-full-datetime] — дата + время в явном формате (не только дата)
+## 🟢 [board-viewer-ux-full-datetime] — дата + время в явном формате (не только дата)
-
+**Status:** done
-**Status:** ready
+**Where I stopped:** `formatMskDateTime` (UTC+3, no-DST) в `render.ts` + `static/board.js`. Карточка показывает `YYYY-MM-DD HH:MM МСК`. Tooltip с full ISO. Relative age оставлен в card-meta (тоненькая строка). 2 новых теста (basic + midnight rollover).
-**Where I stopped:** (not started — 3 design questions: TZ МСК/UTC, format readable/ISO, оставить ли relative «7h». Recommendations внутри `board-viewer-ux-full-datetime.md`.)
+**Next action:** ops redeploy.
-**Next action:** TDD mode. Resolve 3 design-вопроса (или принять recommendations: МСК с явным суффиксом, `YYYY-MM-DD HH:MM МСК`, relative сохранить тоненькой строкой). Затем failing test + impl в `src/render.ts`.
 **Branch:** master
 <!-- created-by: OpeItcLoc03@DESKTOP-NSEF0UK / from: .workshop / 2026-05-22 / trigger: user-ux-feedback-round1 -->
 
@@ -113,11 +112,10 @@ _Updated: 2026-05-22_
 
 ---
 
-## ⚪ [board-viewer-ux-done-cutoff] — фильтр / cutoff длинного done-tail
+## 🟢 [board-viewer-ux-done-cutoff] — фильтр / cutoff длинного done-tail
-
+**Status:** done
-**Status:** ready (design-first)
+**Where I stopped:** source неизменен (✓). Render-side cutoff: done column sort'ится by `last_commit_iso desc`, первые 10 видимы, rest `data-overflow="true"` (CSS hides), внизу column'а button `<button class="done-expander">show N more</button>`. Click → toggle `col.show-overflow` + button text `collapse`. Non-done колонки не trozhуются. 4 новых render-теста (overflow attr / expander / no-expander / non-done).
-**Where I stopped:** (not started — 4 design-вопроса: что считать «archive-нужно» (все 🟢 или N дней+), source неизменен (recommend) vs физический archive, default hide vs show-all, тип cutoff (last-N / date / combined). Recommendations в `board-viewer-ux-done-cutoff.md`.)
+**Next action:** ops redeploy.
-**Next action:** Resolve design (single user-session или brainstorm). Recommendations: source-неизменен, render-side cutoff = «hide done by default + toggle + last-10 fallback при show». TDD impl: render с N done>cutoff показывает только N + «N more» expander. Если дилемма — `.workshop/.brainstorm/board-viewer-done-cutoff.md`.
 **Branch:** master
 <!-- created-by: OpeItcLoc03@DESKTOP-NSEF0UK / from: .workshop / 2026-05-22 / trigger: user-ux-feedback-round1 -->
 
@@ -136,7 +134,7 @@ _Updated: 2026-05-22_
 ## 🔵 [board-viewer-ux-round1-review] — review umbrella для 6 UX-fixes round1
 
 **Status:** blocked
-**Blocker:** board-viewer-ux-full-datetime, board-viewer-ux-task-numbers, board-viewer-ux-done-cutoff (3/6 round1-fixes еще не сделаны — design-first таски)
+**Blocker:** board-viewer-ux-task-numbers (1/6 round1-fixes paused — cross-repo migration требует user-decision)
 **Where I stopped:** (not started — открывать когда все 6 импл-таск 🟢)
 **Next action:** Independent review subagent'ом (clean context, не имплементер) — TDD-immutability (тесты не переписаны под impl), output-correctness (smoke на live board.kzntsv.site после redeploy), regression check (49 существующих тестов остаются pass).
 **Branch:** master

package.json

@@ -1,6 +1,6 @@
 {
   "name": "board-viewer",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "private": true,
   "type": "module",
   "description": "Read-only HTML kanban viewer over Gitea API",

src/render.ts

@@ -23,6 +23,7 @@ const COLUMN_ORDER: Array<{ status: Status; emoji: StatusEmoji; label: string }>
 
 const TITLE_MAX = 80;
 const DEFAULT_ARCHIVE_DAYS = 14;
+const DONE_VISIBLE_LIMIT = 10;
 const MS_PER_DAY = 86_400_000;
 
 export function formatAge(iso: string | null, now: Date): string | null {
@@ -131,22 +132,52 @@ function renderColumn(
   archiveDays: number,
   soloOwner: string | null,
 ): string {
-  const cards = col.records
+  let cardRecords: ReadonlyArray<TaskRecord> = col.records;
-    .map((r) => renderCard(r, now, archiveDays, soloOwner))
+  let overflowCount = 0;
+  let overflowStartIdx = -1;
+
+  if (col.status === 'done') {
+    const sorted = [...col.records].sort(compareByIsoDesc);
+    cardRecords = sorted;
+    if (sorted.length > DONE_VISIBLE_LIMIT) {
+      overflowStartIdx = DONE_VISIBLE_LIMIT;
+      overflowCount = sorted.length - DONE_VISIBLE_LIMIT;
+    }
+  }
+
+  const cards = cardRecords
+    .map((r, i) =>
+      renderCard(r, now, archiveDays, soloOwner, overflowStartIdx !== -1 && i >= overflowStartIdx),
+    )
     .join('\n');
+
+  const expander =
+    overflowCount > 0
+      ? `\n      <button type="button" class="done-expander">show ${overflowCount} more</button>`
+      : '';
+
   return `    <section class="col" data-status="${attr(col.status)}">
       <h2>${col.emoji} ${escapeHtml(col.label)} <span class="count">${col.records.length}</span></h2>
       <ul class="cards">
 ${cards}
-      </ul>
+      </ul>${expander}
     </section>`;
 }
 
+function compareByIsoDesc(a: TaskRecord, b: TaskRecord): number {
+  // Null iso treated as oldest. Descending: recent first.
+  if (a.last_commit_iso === null && b.last_commit_iso === null) return 0;
+  if (a.last_commit_iso === null) return 1;
+  if (b.last_commit_iso === null) return -1;
+  return b.last_commit_iso.localeCompare(a.last_commit_iso);
+}
+
 function renderCard(
   r: TaskRecord,
   now: Date,
   archiveDays: number,
   soloOwner: string | null,
+  overflow: boolean,
 ): string {
   const age = formatAge(r.last_commit_iso, now);
   const archived = r.status === 'done' && isOlderThanDays(r.last_commit_iso, now, archiveDays);
@@ -156,9 +187,9 @@ function renderCard(
       ? `<span class="badge owner">${escapeHtml(r.project_owner)}</span>`
       : '';
   const dateSpan = r.last_commit_iso
-    ? `<span class="date" title="${attr(r.last_commit_iso)}">${escapeHtml(shortDate(r.last_commit_iso))}</span>`
+    ? `<span class="date" title="${attr(r.last_commit_iso)}">${escapeHtml(formatMskDateTime(r.last_commit_iso))}</span>`
     : '';
-  return `        <li class="card" data-slug="${attr(r.slug)}" data-raw-url="${attr(r.raw_url)}" data-archived="${archived ? 'true' : 'false'}">
+  return `        <li class="card" data-slug="${attr(r.slug)}" data-raw-url="${attr(r.raw_url)}" data-archived="${archived ? 'true' : 'false'}" data-overflow="${overflow ? 'true' : 'false'}">
           <div class="card-title">${escapeHtml(truncatedTitle)}</div>
           <code class="card-slug">${escapeHtml(r.slug)}</code>
           <div class="card-meta">
@@ -170,8 +201,16 @@ function renderCard(
         </li>`;
 }
 
-function shortDate(iso: string): string {
+export function formatMskDateTime(iso: string): string {
-  return iso.slice(0, 10);
+  // Moscow time: UTC+3, no DST since 2011. Compute by shifting epoch ms.
+  const utc = new Date(iso);
+  const msk = new Date(utc.getTime() + 3 * 60 * 60 * 1000);
+  const y = msk.getUTCFullYear();
+  const mo = String(msk.getUTCMonth() + 1).padStart(2, '0');
+  const d = String(msk.getUTCDate()).padStart(2, '0');
+  const h = String(msk.getUTCHours()).padStart(2, '0');
+  const mi = String(msk.getUTCMinutes()).padStart(2, '0');
+  return `${y}-${mo}-${d} ${h}:${mi} МСК`;
 }
 
 function isOlderThanDays(iso: string | null, now: Date, days: number): boolean {

static/board.css

@@ -210,6 +210,33 @@ body.show-archived .card[data-archived="true"] {
   display: block;
 }
 
+.card[data-overflow="true"] {
+  display: none;
+}
+
+.col.show-overflow .card[data-overflow="true"] {
+  display: block;
+  opacity: 0.7;
+}
+
+.done-expander {
+  align-self: flex-start;
+  margin-top: 0.4rem;
+  font: inherit;
+  font-size: 0.75rem;
+  padding: 0.2rem 0.6rem;
+  background: transparent;
+  border: 1px dashed var(--border);
+  border-radius: var(--radius);
+  color: var(--muted);
+  cursor: pointer;
+}
+
+.done-expander:hover {
+  border-style: solid;
+  border-color: var(--muted);
+}
+
 .card[data-hidden="true"] {
   display: none;
 }

static/board.js

@@ -33,6 +33,7 @@ const STATUS_EMOJI = {
 };
 
 const ARCHIVE_DAYS = 14;
+const DONE_VISIBLE_LIMIT = 10;
 
 const SOLO_OWNER = (() => {
   const owners = new Set();
@@ -79,7 +80,14 @@ function truncate(s, max) {
   return s.length <= max ? s : s.slice(0, max) + '…';
 }
 
-function renderCard(rec, now, mode) {
+function formatMskDateTime(iso) {
+  const utc = new Date(iso);
+  const msk = new Date(utc.getTime() + 3 * 60 * 60 * 1000);
+  const pad = (n) => String(n).padStart(2, '0');
+  return `${msk.getUTCFullYear()}-${pad(msk.getUTCMonth() + 1)}-${pad(msk.getUTCDate())} ${pad(msk.getUTCHours())}:${pad(msk.getUTCMinutes())} МСК`;
+}
+
+function renderCard(rec, now, mode, overflow) {
   const age = formatAge(rec.last_commit_iso, now);
   const archived = isArchived(rec, now);
   const primary = mode === 'by-project'
@@ -89,9 +97,9 @@ function renderCard(rec, now, mode) {
     ? `<span class="badge owner">${escapeHtml(rec.project_owner)}</span>`
     : '';
   const dateSpan = rec.last_commit_iso
-    ? `<span class="date" title="${escapeHtml(rec.last_commit_iso)}">${escapeHtml(rec.last_commit_iso.slice(0, 10))}</span>`
+    ? `<span class="date" title="${escapeHtml(rec.last_commit_iso)}">${escapeHtml(formatMskDateTime(rec.last_commit_iso))}</span>`
     : '';
-  return `<li class="card" data-slug="${escapeHtml(rec.slug)}" data-raw-url="${escapeHtml(rec.raw_url)}" data-archived="${archived ? 'true' : 'false'}">
+  return `<li class="card" data-slug="${escapeHtml(rec.slug)}" data-raw-url="${escapeHtml(rec.raw_url)}" data-archived="${archived ? 'true' : 'false'}" data-overflow="${overflow ? 'true' : 'false'}">
     <div class="card-title">${escapeHtml(truncate(rec.title, 80))}</div>
     <code class="card-slug">${escapeHtml(rec.slug)}</code>
     <div class="card-meta">
@@ -103,13 +111,32 @@ function renderCard(rec, now, mode) {
   </li>`;
 }
 
+function compareByIsoDesc(a, b) {
+  if (!a.last_commit_iso && !b.last_commit_iso) return 0;
+  if (!a.last_commit_iso) return 1;
+  if (!b.last_commit_iso) return -1;
+  return b.last_commit_iso.localeCompare(a.last_commit_iso);
+}
+
 function renderByStatus(now) {
   return STATUS_ORDER.map((status) => {
-    const inCol = records.filter((r) => r.status === status);
+    let inCol = records.filter((r) => r.status === status);
-    const cards = inCol.map((r) => renderCard(r, now, 'by-status')).join('');
+    let overflowStart = -1;
+    if (status === 'done') {
+      inCol = [...inCol].sort(compareByIsoDesc);
+      if (inCol.length > DONE_VISIBLE_LIMIT) overflowStart = DONE_VISIBLE_LIMIT;
+    }
+    const cards = inCol
+      .map((r, i) => renderCard(r, now, 'by-status', overflowStart !== -1 && i >= overflowStart))
+      .join('');
+    const overflowCount = overflowStart === -1 ? 0 : inCol.length - overflowStart;
+    const expander =
+      overflowCount > 0
+        ? `<button type="button" class="done-expander">show ${overflowCount} more</button>`
+        : '';
     return `<section class="col" data-status="${status}">
       <h2>${STATUS_EMOJI[status]} ${STATUS_LABEL[status]} <span class="count">${inCol.length}</span></h2>
-      <ul class="cards">${cards}</ul>
+      <ul class="cards">${cards}</ul>${expander}
     </section>`;
   }).join('');
 }
@@ -120,7 +147,7 @@ function renderByProject(now) {
     const inCol = records
       .filter((r) => r.project === project)
       .sort((a, b) => STATUS_ORDER.indexOf(a.status) - STATUS_ORDER.indexOf(b.status));
-    const cards = inCol.map((r) => renderCard(r, now, 'by-project')).join('');
+    const cards = inCol.map((r) => renderCard(r, now, 'by-project', false)).join('');
     return `<section class="col" data-project="${escapeHtml(project)}">
       <h2>${escapeHtml(project)} <span class="count">${inCol.length}</span></h2>
       <ul class="cards">${cards}</ul>
@@ -247,6 +274,15 @@ function renderStatusBlock(rec) {
 }
 
 document.addEventListener('click', (e) => {
+  const expander = e.target.closest?.('.done-expander');
+  if (expander) {
+    const col = expander.closest('.col');
+    if (!col) return;
+    if (!expander.dataset.original) expander.dataset.original = expander.textContent;
+    const expanded = col.classList.toggle('show-overflow');
+    expander.textContent = expanded ? 'collapse' : expander.dataset.original;
+    return;
+  }
   const card = e.target.closest?.('.card');
   if (card) openDrawer(card);
 });

tests/render.test.ts

@@ -225,6 +225,77 @@ describe('renderBoard', () => {
     expect(html).not.toMatch(/<span class="badge owner"><\/span>/);
   });
 
+  test('done column: shows only the 10 most recent by last_commit_iso, others get data-overflow', () => {
+    // 12 done records, distinct iso descending from 2026-05-22 backwards
+    const records = Array.from({ length: 12 }, (_, i) =>
+      rec({
+        slug: `done-${String(i).padStart(2, '0')}`,
+        status: 'done',
+        status_emoji: '🟢',
+        last_commit_iso: `2026-05-${String(22 - i).padStart(2, '0')}T12:00:00Z`,
+      }),
+    );
+    const html = renderBoard(records, { generatedAt: now });
+
+    // most-recent 10 (done-00..done-09) visible, last 2 (done-10, done-11) overflow
+    const overflowSlugs = [...html.matchAll(
+      /data-slug="(done-\d+)"[^>]*data-overflow="true"/g,
+    )].map((m) => m[1]);
+    expect(overflowSlugs.sort()).toEqual(['done-10', 'done-11']);
+
+    // first 10 don't carry data-overflow="true"
+    for (let i = 0; i < 10; i++) {
+      expect(html).toMatch(
+        new RegExp(`data-slug="done-${String(i).padStart(2, '0')}"[^>]*data-overflow="false"`),
+      );
+    }
+  });
+
+  test('done column with overflow renders a "show N more" expander button', () => {
+    const records = Array.from({ length: 12 }, (_, i) =>
+      rec({
+        slug: `d-${i}`,
+        status: 'done',
+        status_emoji: '🟢',
+        last_commit_iso: `2026-05-${String(22 - i).padStart(2, '0')}T12:00:00Z`,
+      }),
+    );
+    const html = renderBoard(records, { generatedAt: now });
+
+    expect(html).toMatch(
+      /<button[^>]*class="done-expander"[^>]*>[^<]*show 2 more[^<]*<\/button>/,
+    );
+  });
+
+  test('done column ≤10 records: no expander button rendered', () => {
+    const records = Array.from({ length: 8 }, (_, i) =>
+      rec({
+        slug: `d-${i}`,
+        status: 'done',
+        status_emoji: '🟢',
+        last_commit_iso: `2026-05-${String(22 - i).padStart(2, '0')}T12:00:00Z`,
+      }),
+    );
+    const html = renderBoard(records, { generatedAt: now });
+
+    expect(html).not.toContain('done-expander');
+  });
+
+  test('non-done columns are NOT subject to the cutoff (no overflow attr, no expander)', () => {
+    const records = Array.from({ length: 12 }, (_, i) =>
+      rec({
+        slug: `open-${i}`,
+        status: 'open',
+        status_emoji: '⚪',
+        last_commit_iso: `2026-05-${String(22 - i).padStart(2, '0')}T12:00:00Z`,
+      }),
+    );
+    const html = renderBoard(records, { generatedAt: now });
+
+    expect(html).not.toMatch(/data-overflow="true"/);
+    expect(html).not.toContain('done-expander');
+  });
+
   test('renders slug as a visible <code class="card-slug"> on every card', () => {
     const html = renderBoard(
       [rec({ slug: 'board-viewer-pointers', title: 'pointers' })],
@@ -234,13 +305,26 @@ describe('renderBoard', () => {
     expect(html).toMatch(/<code class="card-slug">board-viewer-pointers<\/code>/);
   });
 
-  test('renders last_commit_iso as a short YYYY-MM-DD date span', () => {
+  test('renders last_commit_iso as YYYY-MM-DD HH:MM МСК (Moscow time, UTC+3, no DST)', () => {
     const html = renderBoard(
       [rec({ slug: 'x', last_commit_iso: '2026-05-19T08:30:00Z' })],
       { generatedAt: now },
     );
 
-    expect(html).toMatch(/<span class="date"[^>]*>2026-05-19<\/span>/);
+    // 08:30 UTC + 3 = 11:30 МСК
+    expect(html).toMatch(/<span class="date"[^>]*>2026-05-19 11:30 МСК<\/span>/);
+    // tooltip retains full ISO for copy-paste
+    expect(html).toContain('title="2026-05-19T08:30:00Z"');
+  });
+
+  test('formats Moscow time correctly across midnight UTC rollover', () => {
+    const html = renderBoard(
+      [rec({ slug: 'x', last_commit_iso: '2026-05-19T22:00:00Z' })],
+      { generatedAt: now },
+    );
+
+    // 22:00 UTC + 3 = 01:00 МСК next day
+    expect(html).toMatch(/2026-05-20 01:00 МСК/);
   });
 
   test('omits date span when last_commit_iso is null', () => {