feat(appointment): 新增 StepIndicator 步骤指示器 + WeekCalendar 周视图日历组件

apps/miniprogram/src/components/StepIndicator/index.scss

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+@import '../../styles/variables.scss';
+
+.step-indicator {
+  display: flex;
+  align-items: flex-start;
+  justify-content: center;
+  padding: 24px 32px;
+  background: $card;
+}
+
+.step-item {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  flex: 1;
+  position: relative;
+}
+
+.step-line {
+  position: absolute;
+  top: 24px;
+  left: -50%;
+  right: 50%;
+  height: 4px;
+  background: $bd-l;
+  transition: background 0.3s ease;
+
+  &.step-line-done {
+    background: $acc;
+  }
+}
+
+.step-dot {
+  width: 48px;
+  height: 48px;
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: $bd-l;
+  color: $tx3;
+  font-size: 24px;
+  transition: all 0.3s ease;
+  z-index: 1;
+
+  &.step-current {
+    background: $pri;
+    color: white;
+  }
+
+  &.step-done {
+    background: $acc;
+    color: white;
+  }
+}
+
+.step-label {
+  font-size: 22px;
+  color: $tx3;
+  margin-top: 8px;
+  text-align: center;
+
+  &.step-current {
+    color: $pri;
+    font-weight: bold;
+  }
+
+  &.step-done {
+    color: $acc;
+  }
+}

apps/miniprogram/src/components/StepIndicator/index.tsx

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+import React from 'react';
+import { View, Text } from '@tarojs/components';
+import './index.scss';
+
+interface Step {
+  label: string;
+}
+
+interface StepIndicatorProps {
+  steps: Step[];
+  current: number;
+  onChange?: (index: number) => void;
+}
+
+export default function StepIndicator({ steps, current, onChange }: StepIndicatorProps) {
+  return (
+    <View className='step-indicator'>
+      {steps.map((step, idx) => {
+        const isCurrent = idx === current;
+        const isDone = idx < current;
+        const isClickable = isDone && !!onChange;
+
+        return (
+          <View className='step-item' key={step.label}>
+            {idx > 0 && (
+              <View className={`step-line ${isDone ? 'step-line-done' : ''}`} />
+            )}
+            <View
+              className={`step-dot ${isCurrent ? 'step-current' : ''} ${isDone ? 'step-done' : ''}`}
+              onClick={isClickable ? () => onChange(idx) : undefined}
+            >
+              {isDone ? <Text className='step-check'>&#10003;</Text> : <Text className='step-num'>{idx + 1}</Text>}
+            </View>
+            <Text className={`step-label ${isCurrent ? 'step-current' : ''} ${isDone ? 'step-done' : ''}`}>
+              {step.label}
+            </Text>
+          </View>
+        );
+      })}
+    </View>
+  );
+}

apps/miniprogram/src/components/WeekCalendar/index.scss

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+@import '../../styles/variables.scss';
+
+.week-calendar {
+  background: $card;
+  border-radius: $r;
+  padding: 16px;
+}
+
+.week-nav {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 16px;
+}
+
+.week-arrow {
+  font-size: 28px;
+  color: $pri;
+  padding: 0 16px;
+}
+
+.week-label {
+  font-size: 24px;
+  color: $tx;
+  font-weight: bold;
+}
+
+.week-grid {
+  display: grid;
+  grid-template-columns: repeat(7, 1fr);
+  gap: 8px;
+  text-align: center;
+}
+
+.week-cell {
+  padding: 8px 4px;
+  border-radius: $r-sm;
+  position: relative;
+}
+
+.cell-weekday {
+  font-size: 20px;
+  color: $tx3;
+  display: block;
+}
+
+.cell-date {
+  font-size: 26px;
+  color: $tx;
+  display: block;
+  margin-top: 4px;
+}
+
+.cell-today {
+  color: $pri;
+  font-weight: bold;
+}
+
+.cell-dot {
+  position: absolute;
+  bottom: 2px;
+  left: 50%;
+  transform: translateX(-50%);
+  width: 8px;
+  height: 8px;
+  background: $acc;
+  border-radius: 50%;
+}
+
+.cell-selected {
+  background: $pri;
+  border-radius: $r-sm;
+
+  .cell-date { color: white; }
+  .cell-dot { background: white; }
+}
+
+.cell-empty .cell-date {
+  color: $bd;
+}
+
+.cell-past {
+  opacity: 0.4;
+}

apps/miniprogram/src/components/WeekCalendar/index.tsx

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+import React, { useState } from 'react';
+import { View, Text } from '@tarojs/components';
+import './index.scss';
+
+interface WeekCalendarProps {
+  scheduledDates: Set<string>;
+  selectedDate: string;
+  onSelectDate: (date: string) => void;
+}
+
+function getWeekDates(offset: number): string[] {
+  const now = new Date();
+  const monday = new Date(now);
+  monday.setDate(now.getDate() - now.getDay() + 1 + offset * 7);
+  const dates: string[] = [];
+  for (let i = 0; i < 7; i++) {
+    const d = new Date(monday);
+    d.setDate(monday.getDate() + i);
+    dates.push(`${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`);
+  }
+  return dates;
+}
+
+const WEEKDAYS = ['一', '二', '三', '四', '五', '六', '日'];
+
+export default function WeekCalendar({ scheduledDates, selectedDate, onSelectDate }: WeekCalendarProps) {
+  const [weekOffset, setWeekOffset] = useState(0);
+  const dates = getWeekDates(weekOffset);
+  const today = (() => {
+    const d = new Date();
+    return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`;
+  })();
+
+  return (
+    <View className='week-calendar'>
+      <View className='week-nav'>
+        <Text className='week-arrow' onClick={() => setWeekOffset(weekOffset - 1)}>&#9664;</Text>
+        <Text className='week-label'>{dates[0].slice(5)} ~ {dates[6].slice(5)}</Text>
+        <Text className='week-arrow' onClick={() => setWeekOffset(weekOffset + 1)}>&#9654;</Text>
+      </View>
+      <View className='week-grid'>
+        {WEEKDAYS.map((day, idx) => {
+          const dateStr = dates[idx];
+          const isScheduled = scheduledDates.has(dateStr);
+          const isSelected = dateStr === selectedDate;
+          const isToday = dateStr === today;
+          const isPast = dateStr < today;
+          return (
+            <View
+              className={`week-cell ${isSelected ? 'cell-selected' : ''} ${!isScheduled ? 'cell-empty' : ''} ${isPast ? 'cell-past' : ''}`}
+              key={dateStr}
+              onClick={isScheduled && !isPast ? () => onSelectDate(dateStr) : undefined}
+            >
+              <Text className='cell-weekday'>{day}</Text>
+              <Text className={`cell-date ${isToday ? 'cell-today' : ''}`}>{parseInt(dateStr.slice(8))}</Text>
+              {isScheduled && <View className='cell-dot' />}
+            </View>
+          );
+        })}
+      </View>
+    </View>
+  );
+}