feat(calendar): 구성원별 체크박스 필터 + 다른 구성원 일정 보기(읽기 전용)

- 일정 소유자별 체크박스로 표시/숨김(기본 전체), 칩에 타인 일정은 이름 이니셜 표기
- 남의 일정 클릭 시 읽기 전용 모달(수정/삭제 불가), 내 일정만 편집

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/pages/Calendar.tsx

@@ -1,7 +1,9 @@
 import { useMemo, useState } from "react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
-import { Plus, Trash2, ChevronLeft, ChevronRight } from "lucide-react";
+import { Plus, Trash2, ChevronLeft, ChevronRight, Users } from "lucide-react";
 import { getEvents, createEvent, updateEvent, deleteEvent, getProjects } from "@/lib/api";
+import { useAuth } from "@/context/Auth";
+import { useDirectory } from "@/lib/directory";
 import {
   Card, Button, PageHeader, Modal, Field, Input, Select, Textarea, LoadingState,
 } from "@/components/ui";
@@ -20,14 +22,32 @@ function eventColor(e: { category: string; projectId: string }): string {
 }
 const ymd = (d: Date) => `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, "0")}-${String(d.getDate()).padStart(2, "0")}`;
 
-// 전체 캘린더 — 개인 일정을 분류(프로젝트/기타/개인)별 색으로 관리.
+// 전체 캘린더 — 직접 넣는 일정만. 다른 구성원 일정도 보이고 구성원별 체크박스로 필터.
 export function CalendarPage() {
   const now = new Date();
+  const { me } = useAuth();
+  const myEmail = me?.user.email ?? "";
+  const { nameOf } = useDirectory();
   const [ym, setYm] = useState({ y: now.getFullYear(), m: now.getMonth() });
   const [editing, setEditing] = useState<Partial<CalendarEvent> | null>(null);
+  const [selected, setSelected] = useState<Set<string> | null>(null); // null = 전체 표시
   const evQ = useQuery({ queryKey: ["events"], queryFn: getEvents });
   const events = evQ.data ?? [];
 
+  // 일정 소유자 목록(나 우선)
+  const owners = useMemo(() => {
+    const s = new Set(events.map((e) => e.ownerEmail));
+    if (myEmail) s.add(myEmail);
+    return Array.from(s).sort((a, b) => (a === myEmail ? -1 : b === myEmail ? 1 : nameOf(a).localeCompare(nameOf(b))));
+  }, [events, myEmail, nameOf]);
+  const isOn = (email: string) => selected === null || selected.has(email);
+  const toggleOwner = (email: string) =>
+    setSelected((prev) => {
+      const next = new Set(prev ?? owners);
+      if (next.has(email)) next.delete(email); else next.add(email);
+      return next;
+    });
+
   const first = new Date(ym.y, ym.m, 1);
   const startDow = first.getDay();
   const daysInMonth = new Date(ym.y, ym.m + 1, 0).getDate();
@@ -36,8 +56,8 @@ export function CalendarPage() {
   const eventsOn = useMemo(() => {
     const map = new Map<string, CalendarEvent[]>();
     for (const e of events) {
+      if (!(selected === null || selected.has(e.ownerEmail))) continue;
       const s = e.start, end = e.end || e.start;
-      // start..end 사이 모든 날짜에 배치
       let d = new Date(s);
       const last = new Date(end);
       if (Number.isNaN(d.getTime())) continue;
@@ -48,16 +68,33 @@ export function CalendarPage() {
       }
     }
     return map;
-  }, [events]);
+  }, [events, selected]);
 
   const prevMonth = () => setYm((s) => ({ y: s.m === 0 ? s.y - 1 : s.y, m: s.m === 0 ? 11 : s.m - 1 }));
   const nextMonth = () => setYm((s) => ({ y: s.m === 11 ? s.y + 1 : s.y, m: s.m === 11 ? 0 : s.m + 1 }));
 
   return (
     <div>
-      <PageHeader title="캘린더" description="내 일정을 분류(프로젝트·기타·개인)별 색으로 관리합니다."
+      <PageHeader title="캘린더" description="내 일정을 분류(프로젝트·기타·개인)별 색으로 관리하고, 구성원 일정도 함께 확인합니다."
         action={<Button icon={<Plus size={16} />} onClick={() => setEditing({ category: "etc", start: ymd(now) })}>일정 추가</Button>} />
 
+      {/* 구성원 필터 (체크박스) */}
+      {owners.length > 1 && (
+        <Card className="mb-3 p-3">
+          <div className="flex items-center gap-2 flex-wrap">
+            <span className="inline-flex items-center gap-1.5 text-xs font-semibold text-ink-secondary mr-1"><Users size={14} /> 구성원</span>
+            {owners.map((email) => (
+              <label key={email} className={classNames("inline-flex items-center gap-1.5 text-sm cursor-pointer px-2 py-1 rounded-control border transition-colors",
+                isOn(email) ? "border-navy bg-navy-subtle/40 text-ink" : "border-border text-ink-muted")}>
+                <input type="checkbox" checked={isOn(email)} onChange={() => toggleOwner(email)} className="accent-navy" />
+                <span className="w-2.5 h-2.5 rounded-full" style={{ background: projectColor(email) }} />
+                {nameOf(email)}{email === myEmail ? " (나)" : ""}
+              </label>
+            ))}
+          </div>
+        </Card>
+      )}
+
       <Card className="p-4">
         <div className="flex items-center justify-between mb-3">
           <button className="p-1.5 rounded-control hover:bg-canvas text-ink-secondary" onClick={prevMonth}><ChevronLeft size={18} /></button>
@@ -83,8 +120,8 @@ export function CalendarPage() {
                         {dayEvents.slice(0, 4).map((e) => (
                           <button key={e.id + dateStr} onClick={() => setEditing(e)}
                             className="block w-full text-left text-[10px] leading-tight px-1.5 py-0.5 rounded truncate text-white"
-                            style={{ background: eventColor(e) }} title={e.title}>
+                            style={{ background: eventColor(e) }} title={`${nameOf(e.ownerEmail)} · ${e.title}`}>
-                            {e.title}
+                            {e.ownerEmail !== myEmail && <span className="opacity-80">{(nameOf(e.ownerEmail)[0] || "·")} </span>}{e.title}
                           </button>
                         ))}
                         {dayEvents.length > 4 && <div className="text-[10px] text-ink-muted px-1">+{dayEvents.length - 4}</div>}
@@ -96,7 +133,6 @@ export function CalendarPage() {
             })}
           </div>
         )}
-        {/* 범례 */}
         <div className="flex flex-wrap items-center gap-3 mt-3 text-xs text-ink-muted">
           <span className="inline-flex items-center gap-1"><span className="w-2.5 h-2.5 rounded-full" style={{ background: CAT_COLOR.etc }} /> 기타</span>
           <span className="inline-flex items-center gap-1"><span className="w-2.5 h-2.5 rounded-full" style={{ background: CAT_COLOR.personal }} /> 개인</span>
@@ -104,14 +140,15 @@ export function CalendarPage() {
         </div>
       </Card>
 
-      {editing && <EventModal init={editing} onClose={() => setEditing(null)} />}
+      {editing && <EventModal init={editing} myEmail={myEmail} ownerName={nameOf(editing.ownerEmail)} onClose={() => setEditing(null)} />}
     </div>
   );
 }
 
-function EventModal({ init, onClose }: { init: Partial<CalendarEvent>; onClose: () => void }) {
+function EventModal({ init, myEmail, ownerName, onClose }: { init: Partial<CalendarEvent>; myEmail: string; ownerName: string; onClose: () => void }) {
   const qc = useQueryClient();
-  const projQ = useQuery({ queryKey: ["projects", "mine"], queryFn: () => getProjects({ scope: "mine" }) });
+  const readOnly = !!init.id && init.ownerEmail !== myEmail; // 남의 일정은 보기 전용
+  const projQ = useQuery({ queryKey: ["projects", "mine"], queryFn: () => getProjects({ scope: "mine" }), enabled: !readOnly });
   const [f, setF] = useState({
     title: init.title ?? "", category: init.category ?? "etc", projectId: init.projectId ?? "",
     start: init.start ?? "", end: init.end ?? "", memo: init.memo ?? "",
@@ -127,6 +164,19 @@ function EventModal({ init, onClose }: { init: Partial<CalendarEvent>; onClose:
   });
   const del = useMutation({ mutationFn: () => deleteEvent(init.id!), onSuccess: () => { invalidate(); onClose(); } });
 
+  if (readOnly) {
+    return (
+      <Modal open onClose={onClose} title="일정" footer={<Button variant="secondary" onClick={onClose}>닫기</Button>}>
+        <div className="space-y-2 text-sm">
+          <div className="text-base font-bold text-ink">{init.title}</div>
+          <div className="text-ink-secondary">{ownerName} 님의 일정</div>
+          <div className="text-ink-secondary tabular">{init.start}{init.end && init.end !== init.start ? ` ~ ${init.end}` : ""}</div>
+          {init.memo && <p className="text-ink-secondary whitespace-pre-wrap">{init.memo}</p>}
+        </div>
+      </Modal>
+    );
+  }
+
   return (
     <Modal open onClose={onClose} title={isEdit ? "일정 수정" : "일정 추가"}
       footer={<>