feat(plan): grid component with sticky headers and weekend tint

src/admin/components/PlanGrid.tsx

@@ -0,0 +1,86 @@
+import { GridData, ResolvedCell } from "../lib/queries/plan";
+import PlanRangeChips from "./PlanRangeChips";
+
+interface Props {
+  data: GridData | undefined;
+  canEdit: boolean;
+  onCellClick: (
+    userId: number,
+    date: string,
+    cell: ResolvedCell | null,
+  ) => void;
+}
+
+const CZECH_WEEKDAYS = ["Ne", "Po", "Út", "St", "Čt", "Pá", "So"];
+
+function eachDay(from: string, to: string): string[] {
+  const out: string[] = [];
+  const a = new Date(from + "T00:00:00.000Z");
+  const b = new Date(to + "T00:00:00.000Z");
+  for (let d = new Date(a); d <= b; d.setUTCDate(d.getUTCDate() + 1)) {
+    out.push(d.toISOString().slice(0, 10));
+  }
+  return out;
+}
+
+function czechWeekday(dateStr: string): string {
+  return CZECH_WEEKDAYS[new Date(dateStr + "T00:00:00.000Z").getUTCDay()];
+}
+
+function isWeekend(dateStr: string): boolean {
+  const day = new Date(dateStr + "T00:00:00.000Z").getUTCDay();
+  return day === 0 || day === 6;
+}
+
+export default function PlanGrid({ data, canEdit, onCellClick }: Props) {
+  if (!data)
+    return (
+      <div className="admin-loading">
+        <div className="admin-spinner" />
+      </div>
+    );
+  const days = eachDay(data.date_from, data.date_to);
+  const users = data.users;
+
+  return (
+    <div className="plan-grid-wrap">
+      <table className="plan-grid">
+        <thead>
+          <tr>
+            <th className="plan-grid-date-col">Datum</th>
+            {users.map((u) => (
+              <th key={u.id}>{u.full_name}</th>
+            ))}
+          </tr>
+        </thead>
+        <tbody>
+          {days.map((date) => (
+            <tr
+              key={date}
+              className={isWeekend(date) ? "plan-grid-weekend" : ""}
+            >
+              <td className="plan-grid-date-col">
+                {czechWeekday(date)} {date.slice(8)}.{date.slice(5, 7)}.
+              </td>
+              {users.map((u) => {
+                const cell = data.cells[u.id]?.[date] ?? null;
+                const cls = `plan-cell${canEdit ? "" : " plan-cell--readonly"}`;
+                return (
+                  <td key={u.id}>
+                    <button
+                      type="button"
+                      className={cls}
+                      onClick={() => onCellClick(u.id, date, cell)}
+                    >
+                      <PlanRangeChips cell={cell} readonly={!canEdit} />
+                    </button>
+                  </td>
+                );
+              })}
+            </tr>
+          ))}
+        </tbody>
+      </table>
+    </div>
+  );
+}

src/admin/components/PlanRangeChips.tsx

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+import { ResolvedCell } from "../lib/queries/plan";
+
+interface Props {
+  cell: ResolvedCell | null;
+  readonly?: boolean;
+}
+
+const CATEGORY_LABELS: Record<string, string> = {
+  work: "Práce",
+  preparation: "Příprava",
+  travel: "Cesta / Montáž",
+  leave: "Dovolená",
+  sick: "Nemoc",
+  training: "Školení",
+  other: "Jiné",
+};
+
+export default function PlanRangeChips({ cell, readonly }: Props) {
+  if (!cell) return null;
+  return (
+    <div>
+      <span className={`plan-chip plan-chip--${cell.category}`}>
+        {CATEGORY_LABELS[cell.category] ?? cell.category}
+      </span>
+      {cell.project_id && (
+        <span style={{ marginLeft: 6, fontSize: 12, fontWeight: 600 }}>
+          {`#${cell.project_id}`}
+        </span>
+      )}
+      {cell.note && <span className="plan-cell-note">{cell.note}</span>}
+    </div>
+  );
+}

src/admin/plan.css

@@ -0,0 +1,125 @@
+/* === Plán prací (work schedule) module === */
+
+.plan-grid-wrap {
+  overflow: auto;
+  border: 1px solid var(--border, #e5e7eb);
+  border-radius: 8px;
+  max-height: calc(100vh - 240px);
+}
+
+.plan-grid {
+  border-collapse: separate;
+  border-spacing: 0;
+  width: 100%;
+  font-size: 13px;
+}
+
+.plan-grid thead th {
+  position: sticky;
+  top: 0;
+  background: var(--bg-secondary, #f9fafb);
+  z-index: 2;
+  padding: 8px;
+  border-bottom: 1px solid var(--border, #e5e7eb);
+  text-align: left;
+  font-weight: 600;
+  white-space: nowrap;
+}
+
+.plan-grid thead th.plan-grid-date-col {
+  left: 0;
+  z-index: 3;
+  min-width: 110px;
+}
+
+.plan-grid tbody td {
+  padding: 6px 8px;
+  border-bottom: 1px solid var(--border, #e5e7eb);
+  vertical-align: top;
+  min-width: 140px;
+}
+
+.plan-grid tbody td.plan-grid-date-col {
+  position: sticky;
+  left: 0;
+  background: var(--bg-secondary, #f9fafb);
+  z-index: 1;
+  font-weight: 500;
+  color: var(--text-muted, #6b7280);
+  white-space: nowrap;
+}
+
+.plan-grid tr.plan-grid-weekend td {
+  background: var(--bg-weekend, #fefce8);
+}
+.plan-grid tr.plan-grid-weekend td.plan-grid-date-col {
+  background: var(--bg-weekend-strong, #fef3c7);
+}
+
+.plan-cell {
+  display: block;
+  width: 100%;
+  text-align: left;
+  background: transparent;
+  border: 1px dashed transparent;
+  border-radius: 6px;
+  padding: 4px 6px;
+  cursor: pointer;
+  min-height: 40px;
+}
+.plan-cell:hover {
+  border-color: var(--primary, #2563eb);
+}
+.plan-cell--readonly {
+  cursor: default;
+}
+.plan-cell--readonly:hover {
+  border-color: transparent;
+}
+
+.plan-chip {
+  display: inline-block;
+  border-radius: 4px;
+  padding: 2px 6px;
+  font-size: 12px;
+  font-weight: 500;
+  color: #1f2937;
+  background: var(--chip-default, #e5e7eb);
+}
+.plan-chip--work {
+  background: #dbeafe;
+}
+.plan-chip--preparation {
+  background: #ccfbf1;
+}
+.plan-chip--travel {
+  background: #fde68a;
+}
+.plan-chip--leave {
+  background: #bbf7d0;
+}
+.plan-chip--sick {
+  background: #fecaca;
+}
+.plan-chip--training {
+  background: #e9d5ff;
+}
+.plan-chip--other {
+  background: #e5e7eb;
+}
+
+.plan-cell-note {
+  display: block;
+  margin-top: 2px;
+  font-size: 11px;
+  color: var(--text-muted, #6b7280);
+  line-height: 1.3;
+}
+
+.plan-toolbar {
+  display: flex;
+  gap: 12px;
+  align-items: center;
+  margin-bottom: 12px;
+  flex-wrap: wrap;
+}