fix: harden calendar subscriptions and add left-swipe reopen

backend/mvp.py

@@ -1,18 +1,21 @@
 import asyncio
 import csv
+import http.client
 import io
 import ipaddress
 import re
 import socket
-import urllib.error
+import ssl
 import urllib.parse
-import urllib.request
 from datetime import UTC, date, datetime, time, timedelta
 from pathlib import Path
 from uuid import UUID
+from zoneinfo import ZoneInfo
 
+from dateutil.rrule import rrulestr
 from fastapi import APIRouter, Depends, File, HTTPException, Query, Response, UploadFile
 from fastapi.responses import FileResponse
+from icalendar import Calendar
 from pydantic import BaseModel, Field, model_validator
 from sqlalchemy import case, delete, func, select
 from sqlalchemy.ext.asyncio import AsyncSession
@@ -268,97 +271,157 @@ def calendar_subscription_dict(row: CalendarSubscription):
     return {"id": row.id, "name": row.name, "url": row.url, "color": row.color, "enabled": row.enabled}
 
 
-def parse_ics_datetime(value: str):
+LOCAL_TZ = ZoneInfo("Asia/Shanghai")
-    raw = value.strip()
-    if len(raw) == 8 and raw.isdigit():
-        return datetime.strptime(raw, "%Y%m%d").replace(tzinfo=UTC), True
-    cleaned = raw.removesuffix("Z")
-    parsed = datetime.fromisoformat(cleaned)
-    if parsed.tzinfo is None:
-        parsed = parsed.replace(tzinfo=UTC)
-    return parsed.astimezone(UTC), False
 
 
-def parse_ics_events(content: str, source_name: str, color: str):
+def _is_forbidden_ip(value: str) -> bool:
+    ip = ipaddress.ip_address(value)
+    return ip.is_private or ip.is_loopback or ip.is_link_local or ip.is_multicast or ip.is_reserved
+
+
+def _as_utc(value, default_tz=LOCAL_TZ):
+    if isinstance(value, datetime):
+        if value.tzinfo is None:
+            value = value.replace(tzinfo=default_tz)
+        return value.astimezone(UTC), False
+    if isinstance(value, date):
+        return datetime.combine(value, time.min, tzinfo=default_tz).astimezone(UTC), True
+    raise ValueError("unsupported ICS datetime")
+
+
+def _event_duration(event, starts_at: datetime, all_day: bool):
+    if event.get("dtend"):
+        ends_at, _ = _as_utc(event.decoded("dtend"))
+        return max(ends_at - starts_at, timedelta())
+    if event.get("duration"):
+        return event.decoded("duration")
+    return timedelta(days=1) if all_day else timedelta(hours=1)
+
+
+def _excluded_starts(event):
+    excluded = set()
+    exdates = event.get("exdate")
+    if not exdates:
+        return excluded
+    if not isinstance(exdates, list):
+        exdates = [exdates]
+    for exdate in exdates:
+        for item in getattr(exdate, "dts", []):
+            excluded.add(_as_utc(item.dt)[0])
+    return excluded
+
+
+def _append_calendar_event(events, source_name, color, event, starts_at, ends_at, all_day):
+    uid = str(event.get("uid") or "")
+    title = str(event.get("summary") or "未命名事件").strip() or "未命名事件"
+    events.append({
+        "id": uid or f"{source_name}-{starts_at.isoformat()}-{title}",
+        "title": title,
+        "starts_at": starts_at,
+        "ends_at": ends_at,
+        "all_day": all_day,
+        "source_name": source_name,
+        "color": color,
+    })
+
+
+def _overlaps(starts_at: datetime, ends_at: datetime | None, window_start: datetime | None, window_end: datetime | None) -> bool:
+    if not window_start or not window_end:
+        return True
+    return starts_at < window_end and (ends_at or starts_at) > window_start
+
+
+def parse_ics_events(content: str, source_name: str, color: str, window_start: datetime | None = None, window_end: datetime | None = None):
+    calendar = Calendar.from_ical(content)
     events = []
-    current = None
+    for event in calendar.walk("VEVENT"):
-    for raw_line in content.splitlines():
+        if not event.get("dtstart"):
-        line = raw_line.strip()
-        if line == "BEGIN:VEVENT":
-            current = {}
             continue
-        if line == "END:VEVENT":
+        starts_at, all_day = _as_utc(event.decoded("dtstart"))
-            if current and current.get("title") and current.get("starts_at"):
+        duration = _event_duration(event, starts_at, all_day)
-                events.append({
+        excluded = _excluded_starts(event)
-                    "id": current.get("uid") or f"{source_name}-{current['starts_at'].isoformat()}-{current['title']}",
+        if event.get("rrule") and window_start and window_end:
-                    "title": current["title"],
+            rule_text = event.get("rrule").to_ical().decode()
-                    "starts_at": current["starts_at"],
+            rule = rrulestr(rule_text, dtstart=starts_at)
-                    "ends_at": current.get("ends_at"),
+            for occurrence in rule.between(window_start - duration, window_end, inc=True):
-                    "all_day": current.get("all_day", False),
+                occurrence = occurrence.astimezone(UTC) if occurrence.tzinfo else occurrence.replace(tzinfo=UTC)
-                    "source_name": source_name,
+                if occurrence in excluded:
-                    "color": color,
+                    continue
-                })
+                ends_at = occurrence + duration
-            current = None
+                if _overlaps(occurrence, ends_at, window_start, window_end):
+                    _append_calendar_event(events, source_name, color, event, occurrence, ends_at, all_day)
             continue
-        if current is None or ":" not in line:
+        ends_at = starts_at + duration
-            continue
+        if _overlaps(starts_at, ends_at, window_start, window_end):
-        key, value = line.split(":", 1)
+            _append_calendar_event(events, source_name, color, event, starts_at, ends_at, all_day)
-        field = key.split(";", 1)[0].upper()
-        if field == "SUMMARY":
-            current["title"] = value.strip()
-        elif field == "UID":
-            current["uid"] = value.strip()
-        elif field in {"DTSTART", "DTEND"}:
-            try:
-                dt, all_day = parse_ics_datetime(value)
-            except ValueError:
-                continue
-            current["all_day"] = current.get("all_day", False) or all_day
-            current["starts_at" if field == "DTSTART" else "ends_at"] = dt
     return events
 
 
-def _validate_public_calendar_url(url: str):
+def _validated_calendar_target(url: str):
     parsed = urllib.parse.urlparse(url)
     if parsed.scheme not in {"http", "https"} or not parsed.hostname:
         raise HTTPException(422, "日历订阅只支持 http/https 链接")
+    if parsed.username or parsed.password:
+        raise HTTPException(422, "日历订阅链接不能包含账号密码")
+    port = parsed.port or (443 if parsed.scheme == "https" else 80)
     try:
-        addresses = socket.getaddrinfo(parsed.hostname, None)
+        addresses = socket.getaddrinfo(parsed.hostname, port, type=socket.SOCK_STREAM)
     except socket.gaierror as exc:
         raise HTTPException(422, "日历订阅域名无法解析") from exc
     for item in addresses:
-        ip = ipaddress.ip_address(item[4][0])
+        ip = item[4][0]
-        if ip.is_private or ip.is_loopback or ip.is_link_local or ip.is_multicast or ip.is_reserved:
+        if not _is_forbidden_ip(ip):
-            raise HTTPException(422, "日历订阅不能指向内网地址")
+            return parsed, ip, port
+    raise HTTPException(422, "日历订阅不能指向内网地址")
 
 
-def fetch_calendar_events(url: str, source_name: str, color: str):
+def _validate_public_calendar_url(url: str):
-    class NoRedirect(urllib.request.HTTPRedirectHandler):
+    _validated_calendar_target(url)
-        def redirect_request(self, req, fp, code, msg, headers, newurl):
-            return None
 
+
+def _request_pinned_calendar_url(url: str):
+    parsed, ip, port = _validated_calendar_target(url)
+    target_host = f"[{ip}]" if ":" in ip else ip
+    path = urllib.parse.urlunparse(("", "", parsed.path or "/", parsed.params, parsed.query, ""))
+    headers = {"Host": parsed.hostname or "", "User-Agent": "dodo-calendar-fetch/1.0"}
+    if parsed.port:
+        headers["Host"] = f"{headers['Host']}:{parsed.port}"
+    if parsed.scheme == "https":
+        connection = http.client.HTTPSConnection(target_host, port=port, timeout=15, context=ssl.create_default_context())
+    else:
+        connection = http.client.HTTPConnection(target_host, port=port, timeout=15)
+    try:
+        if parsed.scheme == "https":
+            raw = socket.create_connection((ip, port), timeout=15)
+            sock = ssl.create_default_context().wrap_socket(raw, server_hostname=parsed.hostname)
+            connection.sock = sock
+        connection.request("GET", path, headers=headers)
+        response = connection.getresponse()
+        body = response.read(2_000_001)
+        return response.status, response.getheaders(), response.getheader("Content-Type") or "", body
+    except OSError as exc:
+        raise HTTPException(502, f"订阅拉取失败: {exc}") from exc
+    finally:
+        connection.close()
+
+
+def fetch_calendar_events(url: str, source_name: str, color: str, window_start: datetime | None = None, window_end: datetime | None = None):
     current_url = url
-    opener = urllib.request.build_opener(NoRedirect)
     for _ in range(4):
-        _validate_public_calendar_url(current_url)
+        status, headers, content_type, body = _request_pinned_calendar_url(current_url)
-        try:
+        if status in {301, 302, 303, 307, 308}:
-            with opener.open(current_url, timeout=15) as response:
+            location = dict(headers).get("Location")
-                content_type = response.headers.get_content_type()
-                if content_type not in {"text/calendar", "text/plain", "application/octet-stream"}:
-                    raise HTTPException(422, "订阅链接没有返回 ICS 日历内容")
-                body = response.read(2_000_001)
-                if len(body) > 2_000_000:
-                    raise HTTPException(413, "日历订阅内容超过 2MB")
-                return parse_ics_events(body.decode("utf-8", errors="ignore"), source_name, color)
-        except urllib.error.HTTPError as exc:
-            if exc.code not in {301, 302, 303, 307, 308}:
-                raise HTTPException(502, f"订阅拉取失败: HTTP {exc.code}") from exc
-            location = exc.headers.get("Location")
             if not location:
-                raise HTTPException(502, "订阅重定向缺少目标地址") from exc
+                raise HTTPException(502, "订阅重定向缺少目标地址")
             current_url = urllib.parse.urljoin(current_url, location)
-        except urllib.error.URLError as exc:
+            continue
-            raise HTTPException(502, f"订阅拉取失败: {exc.reason}") from exc
+        if status >= 400:
+            raise HTTPException(502, f"订阅拉取失败: HTTP {status}")
+        if content_type.split(";", 1)[0].lower() not in {"text/calendar", "text/plain", "application/octet-stream"}:
+            raise HTTPException(422, "订阅链接没有返回 ICS 日历内容")
+        if len(body) > 2_000_000:
+            raise HTTPException(413, "日历订阅内容超过 2MB")
+        return parse_ics_events(body.decode("utf-8", errors="ignore"), source_name, color, window_start, window_end)
     raise HTTPException(502, "日历订阅重定向次数过多")
 
 
@@ -388,11 +451,11 @@ async def today_calendar_events(
     if not rows:
         return []
     tomorrow = day + timedelta(days=1)
-    day_start = datetime.combine(day, time.min, tzinfo=UTC)
+    day_start = datetime.combine(day, time.min, tzinfo=LOCAL_TZ).astimezone(UTC)
-    day_end = datetime.combine(tomorrow, time.min, tzinfo=UTC)
+    day_end = datetime.combine(tomorrow, time.min, tzinfo=LOCAL_TZ).astimezone(UTC)
 
     async def pull(row: CalendarSubscription):
-        return await asyncio.to_thread(fetch_calendar_events, row.url, row.name, row.color)
+        return await asyncio.to_thread(fetch_calendar_events, row.url, row.name, row.color, day_start, day_end)
 
     results = await asyncio.gather(*(pull(row) for row in rows), return_exceptions=True)
     events = []
@@ -400,18 +463,11 @@ async def today_calendar_events(
         if isinstance(result, Exception):
             continue
         for item in result:
-            starts_at = item["starts_at"]
-            ends_at = item.get("ends_at")
-            if item["all_day"]:
-                if not (day_start <= starts_at < day_end):
-                    continue
-            elif not (day_start <= starts_at < day_end):
-                continue
             events.append({
                 "id": item["id"],
                 "title": item["title"],
-                "starts_at": starts_at.isoformat(),
+                "starts_at": item["starts_at"].isoformat(),
-                "ends_at": ends_at.isoformat() if ends_at else None,
+                "ends_at": item["ends_at"].isoformat() if item.get("ends_at") else None,
                 "all_day": item["all_day"],
                 "source_name": row.name,
                 "color": row.color,

backend/static/index.html

@@ -1,3 +1,3 @@
-<!doctype html><html lang="zh-CN"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width,initial-scale=1,viewport-fit=cover"><meta name="theme-color" content="#f15a29"><link rel="manifest" href="/manifest.json"><title>dodo</title>  <script type="module" crossorigin src="/assets/index-BizE1tvq.js"></script>
+<!doctype html><html lang="zh-CN"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width,initial-scale=1,viewport-fit=cover"><meta name="theme-color" content="#f15a29"><link rel="manifest" href="/manifest.json"><title>dodo</title>  <script type="module" crossorigin src="/assets/index-BWTHcY_k.js"></script>
-  <link rel="stylesheet" crossorigin href="/assets/index-BR_rdQ3j.css">
+  <link rel="stylesheet" crossorigin href="/assets/index-CaaWUARH.css">
 </head><body><div id="app"></div></body></html>

frontend/src/App.vue

@@ -249,7 +249,11 @@ function moveTaskSwipe(task: Task, event: TouchEvent) {
   if (!start || start.id !== task.id || !touch) return
   const deltaX = touch.clientX - start.x
   const deltaY = touch.clientY - start.y
-  if (deltaX > 0 && Math.abs(deltaX) > Math.abs(deltaY)) taskSwipeOffsets.value[task.id] = Math.min(deltaX, 92)
+  if (Math.abs(deltaX) > Math.abs(deltaY)) {
+    if ((!task.completed && deltaX > 0) || (task.completed && deltaX < 0)) {
+      taskSwipeOffsets.value[task.id] = Math.max(-92, Math.min(deltaX, 92))
+    }
+  }
 }
 async function finishTaskSwipe(task: Task, event: TouchEvent) {
   const start = taskSwipeStart.value
@@ -258,7 +262,10 @@ async function finishTaskSwipe(task: Task, event: TouchEvent) {
   taskSwipeOffsets.value[task.id] = 0
   if (!start || start.id !== task.id || activeView.value === 'trash' || loading.value) return
   const touch = event.changedTouches[0]
-  if (touch && shouldToggleRowSwipe(touch.clientX - start.x, touch.clientY - start.y)) {
+  const deltaX = touch ? touch.clientX - start.x : 0
+  const deltaY = touch ? touch.clientY - start.y : 0
+  const expectedDirection = task.completed ? deltaX < 0 : deltaX > 0
+  if (touch && expectedDirection && shouldToggleRowSwipe(Math.abs(deltaX), deltaY)) {
     suppressTaskClickId = task.id
     window.setTimeout(() => { if (suppressTaskClickId === task.id) suppressTaskClickId = '' }, 400)
     await toggle(task)
@@ -437,8 +444,8 @@ onMounted(bootstrap)
       <div v-if="activeView!=='trash' && totalPages > 1" class="pager"><button class="secondary" :disabled="page<=1 || loading" @click="previousPage">上一页</button><span>{{page}} / {{totalPages}}</span><button class="secondary" :disabled="page>=totalPages || loading" @click="nextPage">下一页</button></div>
       <section class="task-list" :class="{loading}">
         <template v-for="node in taskTree" :key="node.task.id">
-          <article class="task-row swipeable" :class="{done:node.task.completed,selected:selectedTask?.id===node.task.id,ready:(taskSwipeOffsets[node.task.id] ?? 0) >= 64}" :style="{ '--swipe-x': `${taskSwipeOffsets[node.task.id] ?? 0}px` }" @touchstart.passive="startTaskSwipe(node.task, $event)" @touchmove.passive="moveTaskSwipe(node.task, $event)" @touchend="finishTaskSwipe(node.task, $event)" @touchcancel="cancelTaskSwipe(node.task)">
+          <article class="task-row swipeable" :class="{done:node.task.completed,selected:selectedTask?.id===node.task.id,ready:Math.abs(taskSwipeOffsets[node.task.id] ?? 0) >= 64}" :style="{ '--swipe-x': `${taskSwipeOffsets[node.task.id] ?? 0}px`, '--swipe-width': `${Math.abs(taskSwipeOffsets[node.task.id] ?? 0)}px` }" @touchstart.passive="startTaskSwipe(node.task, $event)" @touchmove.passive="moveTaskSwipe(node.task, $event)" @touchend="finishTaskSwipe(node.task, $event)" @touchcancel="cancelTaskSwipe(node.task)">
-            <span class="swipe-bg">✓ 完成</span>
+            <span class="swipe-bg" :class="{ cancel: node.task.completed }">{{ node.task.completed ? '↩ 未完成' : '✓ 完成' }}</span>
             <div class="task-main" role="button" tabindex="0" @click="activeView==='trash'?undefined:selectTaskUnlessSwiped(node.task)" @keydown.enter="activeView==='trash'?undefined:selectTaskUnlessSwiped(node.task)" @keydown.space.prevent="activeView==='trash'?undefined:selectTaskUnlessSwiped(node.task)"><strong>{{node.task.title}}</strong><span class="meta"><span v-if="node.task.due_at"><CalendarDays/>{{formatDue(node.task.due_at)}}</span><span v-if="node.subtasks.length"><ListChecks/>{{node.subtasks.filter(t=>t.completed).length}}/{{node.subtasks.length}}</span><i v-for="tag in node.task.tags" :key="tag.id" class="tag-dot" :style="{background:tag.color}" :title="tag.name"/></span></div>
             <button v-if="activeView!=='trash'" class="task-swipe-hint" :aria-label="node.task.completed ? `重新打开${node.task.title}` : `完成${node.task.title}`" :aria-pressed="node.task.completed" @click.stop="toggle(node.task)">{{ node.task.completed ? '已完成' : '完成' }}</button>
             <span v-if="node.task.priority" class="priority" :class="`p${node.task.priority}`">{{['','低','中','高'][node.task.priority]}}</span>
@@ -446,7 +453,7 @@ onMounted(bootstrap)
             <button v-else class="icon ghost" aria-label="删除任务" @click.stop="removeTask(node.task)"><Trash2/></button>
             <button v-if="activeView==='trash'" class="icon danger ghost" aria-label="永久删除" @click.stop="purgeTask(node.task)"><X/></button>
           </article>
-          <article v-for="subtask in node.subtasks" :key="subtask.id" class="task-row subtask swipeable" :class="{done:subtask.completed,ready:(taskSwipeOffsets[subtask.id] ?? 0) >= 64}" :style="{ '--swipe-x': `${taskSwipeOffsets[subtask.id] ?? 0}px` }" @touchstart.passive="startTaskSwipe(subtask, $event)" @touchmove.passive="moveTaskSwipe(subtask, $event)" @touchend="finishTaskSwipe(subtask, $event)" @touchcancel="cancelTaskSwipe(subtask)"><span class="swipe-bg">✓ 完成</span><GripVertical/><div class="task-main" role="button" tabindex="0" @click="selectTaskUnlessSwiped(subtask)" @keydown.enter="selectTaskUnlessSwiped(subtask)" @keydown.space.prevent="selectTaskUnlessSwiped(subtask)"><strong>{{subtask.title}}</strong></div><button class="task-swipe-hint" :aria-label="subtask.completed ? `重新打开${subtask.title}` : `完成${subtask.title}`" :aria-pressed="subtask.completed" @click.stop="toggle(subtask)">{{ subtask.completed ? '已完成' : '完成' }}</button></article>
+          <article v-for="subtask in node.subtasks" :key="subtask.id" class="task-row subtask swipeable" :class="{done:subtask.completed,ready:Math.abs(taskSwipeOffsets[subtask.id] ?? 0) >= 64}" :style="{ '--swipe-x': `${taskSwipeOffsets[subtask.id] ?? 0}px`, '--swipe-width': `${Math.abs(taskSwipeOffsets[subtask.id] ?? 0)}px` }" @touchstart.passive="startTaskSwipe(subtask, $event)" @touchmove.passive="moveTaskSwipe(subtask, $event)" @touchend="finishTaskSwipe(subtask, $event)" @touchcancel="cancelTaskSwipe(subtask)"><span class="swipe-bg" :class="{ cancel: subtask.completed }">{{ subtask.completed ? '↩ 未完成' : '✓ 完成' }}</span><GripVertical/><div class="task-main" role="button" tabindex="0" @click="selectTaskUnlessSwiped(subtask)" @keydown.enter="selectTaskUnlessSwiped(subtask)" @keydown.space.prevent="selectTaskUnlessSwiped(subtask)"><strong>{{subtask.title}}</strong></div><button class="task-swipe-hint" :aria-label="subtask.completed ? `重新打开${subtask.title}` : `完成${subtask.title}`" :aria-pressed="subtask.completed" @click.stop="toggle(subtask)">{{ subtask.completed ? '已完成' : '完成' }}</button></article>
         </template>
         <div v-if="!visibleTasks.length&&!loading" class="empty"><ListTodo/><b>{{query?'没有匹配的任务':'这里还很安静'}}</b><span>{{query?'换个关键词试试':'写下第一件想完成的小事吧'}}</span></div>
       </section>

frontend/src/MvpPanel.vue

@@ -95,7 +95,12 @@ function moveHabitSwipe(h: Habit, event: TouchEvent) {
   if (!start || start.id !== h.id || !touch) return
   const deltaX = touch.clientX - start.x
   const deltaY = touch.clientY - start.y
-  if (deltaX > 0 && Math.abs(deltaX) > Math.abs(deltaY)) habitSwipeOffsets.value[h.id] = Math.min(deltaX, 92)
+  const done = isDone(h, todayKey.value)
+  if (Math.abs(deltaX) > Math.abs(deltaY)) {
+    if ((!done && deltaX > 0) || (done && deltaX < 0)) {
+      habitSwipeOffsets.value[h.id] = Math.max(-92, Math.min(deltaX, 92))
+    }
+  }
 }
 async function finishHabitSwipe(h: Habit, event: TouchEvent) {
   const start = habitSwipeStart.value
@@ -103,7 +108,10 @@ async function finishHabitSwipe(h: Habit, event: TouchEvent) {
   habitSwipeOffsets.value[h.id] = 0
   if (!start || start.id !== h.id || h.kind === 'numeric' || busy.value) return
   const touch = event.changedTouches[0]
-  if (touch && shouldToggleRowSwipe(touch.clientX - start.x, touch.clientY - start.y)) {
+  const deltaX = touch ? touch.clientX - start.x : 0
+  const deltaY = touch ? touch.clientY - start.y : 0
+  const expectedDirection = isDone(h, todayKey.value) ? deltaX < 0 : deltaX > 0
+  if (touch && expectedDirection && shouldToggleRowSwipe(Math.abs(deltaX), deltaY)) {
     await toggleHabit(h, todayKey.value)
   }
 }
@@ -283,11 +291,11 @@ onBeforeUnmount(() => {
 
 
       <!-- 习惯列表：布尔习惯整行右滑打卡，数值习惯保留明确输入记录 -->
-      <div class="habit-list">
+      <div v-if="view === 'habits'" class="habit-list">
-        <article v-for="h in habits" :key="h.id" class="habit-row" :class="{ done: isDone(h, todayKey), swipeable: h.kind !== 'numeric', ready: (habitSwipeOffsets[h.id] ?? 0) >= 64 }" :style="{ '--swipe-x': `${habitSwipeOffsets[h.id] ?? 0}px` }" @touchstart.passive="startHabitSwipe(h, $event)" @touchmove.passive="moveHabitSwipe(h, $event)" @touchend="finishHabitSwipe(h, $event)" @touchcancel="cancelHabitSwipe(h)">
+        <article v-for="h in habits" :key="h.id" class="habit-row" :class="{ done: isDone(h, todayKey), swipeable: h.kind !== 'numeric', ready: Math.abs(habitSwipeOffsets[h.id] ?? 0) >= 64 }" :style="{ '--swipe-x': `${habitSwipeOffsets[h.id] ?? 0}px`, '--swipe-width': `${Math.abs(habitSwipeOffsets[h.id] ?? 0)}px` }" @touchstart.passive="startHabitSwipe(h, $event)" @touchmove.passive="moveHabitSwipe(h, $event)" @touchend="finishHabitSwipe(h, $event)" @touchcancel="cancelHabitSwipe(h)">
-          <span v-if="h.kind !== 'numeric'" class="swipe-bg">✓ 打卡</span>
+          <span v-if="h.kind !== 'numeric'" class="swipe-bg" :class="{ cancel: isDone(h, todayKey) }">{{ isDone(h, todayKey) ? '↩ 未完成' : '✓ 打卡' }}</span>
           <div v-if="h.kind !== 'numeric'" class="habit-main">
-            <span><span class="habit-name">{{ h.name }}</span><small>{{ isDone(h, todayKey) ? '今天已完成 · 右滑可取消' : '右滑整行打卡' }}</small></span>
+            <span><span class="habit-name">{{ h.name }}</span><small>{{ isDone(h, todayKey) ? '今天已完成 · 左滑取消' : '右滑整行打卡' }}</small></span>
             <button class="habit-swipe-hint" :aria-label="isDone(h, todayKey) ? `取消${h.name}今天的打卡` : `完成${h.name}今天的打卡`" :aria-pressed="isDone(h, todayKey)" @click.stop="toggleHabitFromButton(h)">{{ isDone(h, todayKey) ? '已完成' : '打卡' }}</button>
           </div>
           <div v-else class="habit-main numeric-habit">

frontend/src/style.css

@@ -4,7 +4,7 @@
 *{box-sizing:border-box}body{margin:0;background:#f8f3e8}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}svg{width:18px;height:18px;stroke-width:1.8}.center,.auth-shell{min-height:100vh;display:grid;place-items:center}.center{gap:12px;align-content:center;color:var(--muted)}.loader{width:24px;height:24px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
 .auth-shell{background:radial-gradient(circle at 20% 10%,#ffe3d5 0,transparent 28%),linear-gradient(135deg,#f8f3e8,#fffaf0)}.auth-card{width:min(390px,90vw);padding:38px;background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);display:grid;gap:16px}.brand{font-size:40px;font-weight:850;letter-spacing:-3px}.brand span{color:var(--accent)}.brand.small{font-size:29px}.auth-card p{margin:0 0 8px;color:var(--muted)}.auth-card label,.detail-form>label{display:grid;gap:7px;font-size:12px;font-weight:650;color:#756d61}.auth-card input,.detail-form input,.detail-form select{width:100%;border:1px solid var(--line);background:#fff;padding:11px;border-radius:9px;outline:none}.auth-card input:focus,.detail-form input:focus,.detail-form select:focus,.detail-form textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(241,90,41,.1)}.primary{border:0;background:var(--accent);color:#fff;padding:12px;border-radius:9px;font-weight:700;box-shadow:0 5px 12px rgba(241,90,41,.2)}.auth-card small{color:var(--danger)}
 .shell{height:100vh;display:grid;grid-template-columns:238px minmax(430px,1fr) 350px;background:var(--paper);overflow:hidden}.sidebar{border-right:1px solid var(--line);background:var(--sidebar);display:flex;flex-direction:column;min-height:0}.brand-row{height:76px;padding:0 20px;display:flex;align-items:center;justify-content:space-between}.primary-nav{display:grid;padding:4px 12px 12px;gap:3px}.primary-nav button,.settings{display:flex;align-items:center;gap:10px;border:0;background:transparent;padding:10px 12px;border-radius:9px;color:#665e52;text-align:left}.primary-nav button:hover,.list-row:hover,.folder-row>button:hover{background:rgba(255,255,255,.52)}.primary-nav button.active,.list-row.active{background:var(--accent-soft);color:#b7421e;font-weight:700}.section-title{padding:17px 17px 7px 22px;display:flex;justify-content:space-between;align-items:center;color:#958b7d;text-transform:uppercase;letter-spacing:.08em;font-size:11px;font-weight:750}.section-title>span:last-child{display:flex}.mini-icon,.row-actions button{border:0;background:transparent;padding:4px;color:#8e8477}.mini-icon svg,.row-actions svg{width:14px;height:14px}.folders{padding:0 10px;overflow:auto}.folder-row{display:flex;align-items:center}.folder-row>button{flex:1;min-width:0;border:0;background:transparent;padding:8px;display:flex;align-items:center;gap:7px;color:#6d6559;text-align:left}.folder-row>button svg{width:14px}.row-actions{display:flex;opacity:0;transition:opacity .15s}.folder-row:hover .row-actions,.list-row:hover .row-actions{opacity:1}.list-row{width:100%;border:0;background:transparent;padding:8px 7px 8px 31px;border-radius:8px;display:flex;align-items:center;gap:9px;text-align:left;color:#665f55}.list-row>span:nth-child(2){flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.list-row i{width:8px;height:8px;background:#d89b62;border-radius:3px}.settings{margin:auto 12px 14px}.mobile-only,.bottom,.fab{display:none}
-main{min-width:0;padding:27px 34px 50px;overflow:auto;background:linear-gradient(rgba(255,253,248,.92),rgba(255,253,248,.92)),repeating-linear-gradient(0deg,transparent,transparent 31px,#eee3d2 32px)}.topbar{display:flex;align-items:center;gap:14px}.topbar>div{flex:1}.topbar p{margin:0;color:var(--muted);font-size:12px}.topbar h1{font-size:27px;margin:3px 0 21px;letter-spacing:-.03em}.search{margin-bottom:18px;display:flex;align-items:center;gap:8px;width:min(260px,36%);padding:8px 10px;background:#faf7f0;border:1px solid var(--line);border-radius:9px;color:var(--muted)}.search input{min-width:0;width:100%;border:0;outline:0;background:transparent}.search kbd{font-size:10px;white-space:nowrap;border:1px solid var(--line);padding:2px 4px;border-radius:4px}.quick{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:11px;padding:7px 7px 7px 13px;box-shadow:0 2px 10px rgba(81,61,38,.05);transition:.18s}.quick:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(241,90,41,.09)}.quick>svg{color:var(--accent)}.quick input{border:0;outline:0;background:transparent;min-width:0;flex:1}.quick button{border:0;border-radius:8px;background:var(--accent);color:white;padding:8px 15px;font-weight:650}.list-toolbar{height:42px;display:flex;align-items:center;gap:14px;color:var(--muted);font-size:12px}.list-toolbar label{margin-right:auto}.link{border:0;background:transparent;color:var(--accent);padding:3px;display:inline-flex;gap:3px;align-items:center}.link svg{width:14px}.task-list{transition:opacity .2s}.task-list.loading{opacity:.45}.task-row{--swipe-x:0px;min-height:53px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line);padding:4px 8px;transition:background .15s,transform .18s ease;position:relative;overflow:hidden;isolation:isolate}.task-row.swipeable{touch-action:pan-y;transform:translateX(var(--swipe-x))}.task-row.swipeable:not([style*="0px"]){transition:none}.task-row:hover,.task-row.selected{background:rgba(250,240,229,.75)}.task-row:hover{transform:translateX(calc(var(--swipe-x) + 2px))}.swipe-bg{position:absolute;z-index:-1;inset:0 auto 0 calc(-1 * var(--swipe-x));width:var(--swipe-x);min-width:0;display:flex;align-items:center;padding-left:14px;background:#e9f7ee;color:#24814f;font-size:12px;font-weight:800;white-space:nowrap;overflow:hidden}.task-row.ready .swipe-bg,.habit-row.ready .swipe-bg{background:#dff3e7;color:#187142}.check{width:19px;height:19px;flex:0 0 19px;border:1.6px solid #c6baa8;background:#fff;border-radius:5px;padding:0;display:grid;place-items:center}.check svg{width:13px}.check.p1{border-color:#4b93d1}.check.p2{border-color:#d79b25}.check.p3{border-color:#dc4b30}.done .check{background:#afa595;color:white}.task-main{border:0;background:transparent;flex:1;min-width:0;text-align:left;padding:8px 0}.task-main strong{display:block;font-size:14px;font-weight:590;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.done .task-main strong{text-decoration:line-through;color:#9b9388}.task-swipe-hint{min-height:44px;flex:0 0 auto;border:0;border-radius:999px;background:#f3ede3;color:#9a8f80;padding:8px 11px;font-size:11px;font-weight:700}.task-row.done .task-swipe-hint{background:var(--accent-soft);color:#b7421e}.meta{display:flex;align-items:center;gap:9px;color:#9b9286;font-size:11px;margin-top:3px}.meta span{display:flex;align-items:center;gap:3px}.meta svg{width:12px}.tag-dot{width:7px;height:7px;border-radius:50%}.priority{font-size:10px;font-weight:750;padding:3px 6px;border-radius:5px}.priority.p1{color:#3f80ba;background:#e5f2fc}.priority.p2{color:#a56b05;background:#fff1cb}.priority.p3{color:#bd3827;background:#fde2dc}.icon,.ghost{border:0;background:transparent;display:grid;place-items:center;padding:5px;border-radius:6px}.ghost{opacity:0;color:#9d9387}.task-row:hover .ghost{opacity:1}.ghost:hover{color:var(--danger);background:#fce7e2}.restore{display:flex;align-items:center;gap:5px;border:1px solid var(--line);background:#fff;border-radius:7px;padding:6px 8px;font-size:12px}.restore svg{width:14px}.subtask{padding-left:53px;min-height:42px;color:#6d655b}.subtask>svg{width:13px;color:#bbb0a2}.empty{min-height:300px;display:grid;place-items:center;align-content:center;gap:8px;color:#aaa094;text-align:center}.empty>svg{width:38px;height:38px;color:#d8cabb}.empty b{color:#6f675c}.empty span{font-size:13px}
+main{min-width:0;padding:27px 34px 50px;overflow:auto;background:linear-gradient(rgba(255,253,248,.92),rgba(255,253,248,.92)),repeating-linear-gradient(0deg,transparent,transparent 31px,#eee3d2 32px)}.topbar{display:flex;align-items:center;gap:14px}.topbar>div{flex:1}.topbar p{margin:0;color:var(--muted);font-size:12px}.topbar h1{font-size:27px;margin:3px 0 21px;letter-spacing:-.03em}.search{margin-bottom:18px;display:flex;align-items:center;gap:8px;width:min(260px,36%);padding:8px 10px;background:#faf7f0;border:1px solid var(--line);border-radius:9px;color:var(--muted)}.search input{min-width:0;width:100%;border:0;outline:0;background:transparent}.search kbd{font-size:10px;white-space:nowrap;border:1px solid var(--line);padding:2px 4px;border-radius:4px}.quick{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:11px;padding:7px 7px 7px 13px;box-shadow:0 2px 10px rgba(81,61,38,.05);transition:.18s}.quick:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(241,90,41,.09)}.quick>svg{color:var(--accent)}.quick input{border:0;outline:0;background:transparent;min-width:0;flex:1}.quick button{border:0;border-radius:8px;background:var(--accent);color:white;padding:8px 15px;font-weight:650}.list-toolbar{height:42px;display:flex;align-items:center;gap:14px;color:var(--muted);font-size:12px}.list-toolbar label{margin-right:auto}.link{border:0;background:transparent;color:var(--accent);padding:3px;display:inline-flex;gap:3px;align-items:center}.link svg{width:14px}.task-list{transition:opacity .2s}.task-list.loading{opacity:.45}.task-row{--swipe-x:0px;min-height:53px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line);padding:4px 8px;transition:background .15s,transform .18s ease;position:relative;overflow:hidden;isolation:isolate}.task-row.swipeable{touch-action:pan-y;transform:translateX(var(--swipe-x))}.task-row.swipeable:not([style*="0px"]){transition:none}.task-row:hover,.task-row.selected{background:rgba(250,240,229,.75)}.task-row:hover{transform:translateX(calc(var(--swipe-x) + 2px))}.swipe-bg{position:absolute;z-index:-1;inset:0 auto 0 calc(-1 * var(--swipe-x));width:var(--swipe-width);min-width:0;display:flex;align-items:center;padding-left:14px;background:#e9f7ee;color:#24814f;font-size:12px;font-weight:800;white-space:nowrap;overflow:hidden}.swipe-bg.cancel{left:auto;right:var(--swipe-x);justify-content:flex-end;padding:0 14px 0 0;background:#fff2e8;color:#c65a23}.task-row.ready .swipe-bg,.habit-row.ready .swipe-bg{background:#dff3e7;color:#187142}.task-row.ready .swipe-bg.cancel,.habit-row.ready .swipe-bg.cancel{background:#ffe4d3;color:#b94716}.check{width:19px;height:19px;flex:0 0 19px;border:1.6px solid #c6baa8;background:#fff;border-radius:5px;padding:0;display:grid;place-items:center}.check svg{width:13px}.check.p1{border-color:#4b93d1}.check.p2{border-color:#d79b25}.check.p3{border-color:#dc4b30}.done .check{background:#afa595;color:white}.task-main{border:0;background:transparent;flex:1;min-width:0;text-align:left;padding:8px 0}.task-main strong{display:block;font-size:14px;font-weight:590;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.done .task-main strong{text-decoration:line-through;color:#9b9388}.task-swipe-hint{min-height:44px;flex:0 0 auto;border:0;border-radius:999px;background:#f3ede3;color:#9a8f80;padding:8px 11px;font-size:11px;font-weight:700}.task-row.done .task-swipe-hint{background:var(--accent-soft);color:#b7421e}.meta{display:flex;align-items:center;gap:9px;color:#9b9286;font-size:11px;margin-top:3px}.meta span{display:flex;align-items:center;gap:3px}.meta svg{width:12px}.tag-dot{width:7px;height:7px;border-radius:50%}.priority{font-size:10px;font-weight:750;padding:3px 6px;border-radius:5px}.priority.p1{color:#3f80ba;background:#e5f2fc}.priority.p2{color:#a56b05;background:#fff1cb}.priority.p3{color:#bd3827;background:#fde2dc}.icon,.ghost{border:0;background:transparent;display:grid;place-items:center;padding:5px;border-radius:6px}.ghost{opacity:0;color:#9d9387}.task-row:hover .ghost{opacity:1}.ghost:hover{color:var(--danger);background:#fce7e2}.restore{display:flex;align-items:center;gap:5px;border:1px solid var(--line);background:#fff;border-radius:7px;padding:6px 8px;font-size:12px}.restore svg{width:14px}.subtask{padding-left:53px;min-height:42px;color:#6d655b}.subtask>svg{width:13px;color:#bbb0a2}.empty{min-height:300px;display:grid;place-items:center;align-content:center;gap:8px;color:#aaa094;text-align:center}.empty>svg{width:38px;height:38px;color:#d8cabb}.empty b{color:#6f675c}.empty span{font-size:13px}
 .detail{min-width:0;border-left:1px solid var(--line);background:#faf7f0;overflow:auto}.detail-head{height:57px;display:flex;align-items:center;justify-content:space-between;padding:0 21px;border-bottom:1px solid var(--line);font-size:12px;font-weight:700;color:#80766a;text-transform:uppercase;letter-spacing:.08em}.paper{margin:22px;padding:28px 20px;min-height:180px;background:#fff;border:1px solid var(--line);border-radius:11px;box-shadow:0 4px 18px rgba(76,57,34,.05);display:grid;place-items:center;align-content:center;text-align:center;color:#8f8578}.paper svg{width:32px;height:32px;color:#ceb8a4;margin-bottom:12px}.paper b{color:#625b50}.paper p{font-size:13px;line-height:1.6}.detail-form{padding:19px;display:grid;gap:15px}.detail-title{display:flex;align-items:flex-start;gap:10px}.check.large{margin-top:8px;width:22px;height:22px;flex-basis:22px}.detail-title textarea{flex:1;border:0;background:transparent;resize:none;outline:none;font-size:19px;line-height:1.4;font-weight:700}.detail-form>label{grid-template-columns:80px 1fr;align-items:center}.detail-form>label input,.detail-form>label select{padding:8px}.field{display:grid;gap:7px}.field-label{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:700;color:#756d61}.tag-picker{display:flex;flex-wrap:wrap;gap:6px}.tag-picker button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:5px 8px;display:flex;align-items:center;gap:5px;font-size:11px}.tag-picker button.chosen{border-color:#c89077;background:#fff1e9}.tag-picker i{width:8px;height:8px;border-radius:50%}.hint{font-size:12px;color:#a49a8d}.markdown .field-label>span:last-child{display:flex;background:#eee7dc;padding:2px;border-radius:6px}.markdown .field-label button{border:0;background:transparent;padding:4px 8px;border-radius:5px;font-size:11px}.markdown .field-label button.active{background:#fff;color:var(--accent)}.markdown textarea{border:1px solid var(--line);background:#fff;border-radius:9px;padding:11px;resize:vertical;outline:none;font:13px/1.6 ui-monospace,SFMono-Regular,Menlo,monospace}.markdown-preview{min-height:160px;padding:10px 12px;background:#fff;border:1px solid var(--line);border-radius:9px;font-size:13px;line-height:1.65;overflow-wrap:anywhere}.markdown-preview h1{font-size:20px}.markdown-preview h2{font-size:16px}.markdown-preview p{margin:8px 0}.markdown-preview code{background:#f2ece2;padding:2px 4px;border-radius:4px}.markdown-preview a{color:var(--accent)}.subtasks{display:grid;gap:5px}.subtask-detail{display:flex;align-items:center;gap:8px;border:0;background:#fff;padding:8px;border-radius:7px;text-align:left}.subtask-detail .check{pointer-events:none}.strike{text-decoration:line-through;color:var(--muted)}.detail-actions{display:flex;justify-content:space-between;align-items:center;padding-top:10px;border-top:1px solid var(--line)}.secondary{border:1px solid var(--line);background:#fff;padding:8px 11px;border-radius:8px;font-weight:650}.danger-text{border:0;background:transparent;color:var(--danger);display:flex;align-items:center;gap:5px;font-size:12px}.danger-text svg{width:14px}
 .toast,.error-toast{position:fixed;z-index:50;left:50%;bottom:24px;transform:translateX(-50%);background:#322d28;color:#fff;border-radius:9px;padding:10px 15px;box-shadow:var(--shadow);font-size:13px}.error-toast{background:var(--danger);display:flex;align-items:center;gap:10px}.error-toast button{border:0;background:transparent;color:#fff;padding:0}.toast-enter-active,.toast-leave-active{transition:.2s}.toast-enter-from,.toast-leave-to{opacity:0;transform:translate(-50%,8px)}
 @media(max-width:1050px){.shell{grid-template-columns:220px minmax(400px,1fr) 310px}main{padding-inline:24px}}

pyproject.toml

@@ -15,6 +15,7 @@ dependencies = [
   "uuid-utils>=0.11,<1",
   "structlog>=25,<26",
   "apscheduler>=3.11,<4",
+  "icalendar>=6,<7",
 ]
 
 [dependency-groups]

tests/test_mvp_backend.py

@@ -34,6 +34,59 @@ def test_calendar_endpoint_is_removed(client):
     assert client.get("/api/v1/calendar", params={"start": "2026-09-01", "end": "2026-09-30"}).status_code == 404
 
 
+def test_calendar_parser_handles_tzid_recurrence_folding_and_multiday():
+    from backend.mvp import parse_ics_events
+
+    ics = """BEGIN:VCALENDAR\r
+VERSION:2.0\r
+BEGIN:VEVENT\r
+UID:tzid-recurring\r
+DTSTART;TZID=Asia/Shanghai:20260906T090000\r
+DTEND;TZID=Asia/Shanghai:20260906T100000\r
+RRULE:FREQ=DAILY;COUNT=2\r
+EXDATE;TZID=Asia/Shanghai:20260907T090000\r
+SUMMARY:折叠\r
+ 标题\r
+END:VEVENT\r
+BEGIN:VEVENT\r
+UID:multi-day\r
+DTSTART;TZID=Asia/Shanghai:20260905T230000\r
+DTEND;TZID=Asia/Shanghai:20260906T010000\r
+SUMMARY:跨天事件\r
+END:VEVENT\r
+END:VCALENDAR\r
+"""
+    events = parse_ics_events(
+        ics,
+        "测试日历",
+        "#fff",
+        datetime(2026, 9, 5, 16, tzinfo=UTC),
+        datetime(2026, 9, 6, 16, tzinfo=UTC),
+    )
+
+    assert [(row["title"], row["starts_at"].isoformat()) for row in events] == [
+        ("折叠标题", "2026-09-06T01:00:00+00:00"),
+        ("跨天事件", "2026-09-05T15:00:00+00:00"),
+    ]
+
+
+def test_calendar_url_rejects_private_addresses(monkeypatch):
+    from fastapi import HTTPException
+
+    from backend.mvp import _validated_calendar_target
+
+    monkeypatch.setattr(
+        "backend.mvp.socket.getaddrinfo",
+        lambda *_args, **_kwargs: [(None, None, None, None, ("127.0.0.1", 80))],
+    )
+    try:
+        _validated_calendar_target("http://example.com/calendar.ics")
+    except HTTPException as exc:
+        assert exc.status_code == 422
+    else:
+        raise AssertionError("private calendar target should be rejected")
+
+
 def test_recurrence_mutations_keep_exact_timestamp_validation(client):
     inbox = boot(client)
     task = client.post(

uv.lock

@@ -289,6 +289,7 @@ dependencies = [
     { name = "argon2-cffi" },
     { name = "asyncpg" },
     { name = "fastapi" },
+    { name = "icalendar" },
     { name = "pydantic-settings" },
     { name = "python-multipart" },
     { name = "sqlalchemy", extra = ["asyncio"] },
@@ -313,6 +314,7 @@ requires-dist = [
     { name = "argon2-cffi", specifier = ">=25,<26" },
     { name = "asyncpg", specifier = ">=0.30,<1" },
     { name = "fastapi", specifier = ">=0.116,<1" },
+    { name = "icalendar", specifier = ">=6,<7" },
     { name = "pydantic-settings", specifier = ">=2.10,<3" },
     { name = "python-multipart", specifier = ">=0.0.20,<1" },
     { name = "sqlalchemy", extras = ["asyncio"], specifier = ">=2.0,<3" },
@@ -486,6 +488,19 @@ wheels = [
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 version = "3.19"
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+version = "2.9.0.post0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "six" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/66/c0/0c8b6ad9f17a802ee498c46e004a0eb49bc148f2fd230864601a86dcf6db/python-dateutil-2.9.0.post0.tar.gz", hash = "sha256:37dd54208da7e1cd875388217d5e00ebd4179249f90fb72437e91a35459a0ad3", size = 342432 }
+wheels = [
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+
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 version = "1.2.3"
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+wheels = [
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+
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 version = "2.0.52"