docs/screen-implementation-guide/00_analysis/next-component-development-plan.md

@@ -531,7 +531,7 @@ function detectConflicts(schedules: ScheduleItem[], resourceId: string): Schedul
 - [x] 레지스트리 등록
 - [x] 문서화 (README.md)
 
-#### v2-timeline-scheduler ✅ 구현 완료 (2026-01-30)
+#### v2-timeline-scheduler ✅ 구현 완료 (2026-01-30, 업데이트: 2026-03-13)
 
 - [x] 타입 정의 완료
 - [x] 기본 구조 생성
@@ -539,12 +539,16 @@ function detectConflicts(schedules: ScheduleItem[], resourceId: string): Schedul
 - [x] TimelineGrid (배경)
 - [x] ResourceColumn (리소스)
 - [x] ScheduleBar 기본 렌더링
-- [x] 드래그 이동 (기본)
-- [x] 리사이즈 (기본)
+- [x] 드래그 이동 (실제 로직: deltaX → 날짜 계산 → API 저장 → toast)
+- [x] 리사이즈 (실제 로직: 시작/종료 핸들 → 기간 변경 → API 저장 → toast)
 - [x] 줌 레벨 전환
 - [x] 날짜 네비게이션
-- [ ] 충돌 감지 (향후)
-- [ ] 가상 스크롤 (향후)
+- [x] 충돌 감지 (같은 리소스 겹침 → ring-destructive + AlertTriangle)
+- [x] 마일스톤 표시 (시작일 = 종료일 → 다이아몬드 마커)
+- [x] 범례 표시 (TimelineLegend: 상태별 색상 + 마일스톤 + 충돌)
+- [x] 반응형 공통 CSS 적용 (text-[10px] sm:text-sm 패턴)
+- [x] staticFilters 지원 (커스텀 테이블 필터링)
+- [ ] 가상 스크롤 (향후 - 대용량 100+ 리소스)
 - [x] 설정 패널 구현
 - [x] API 연동
 - [x] 레지스트리 등록

frontend/lib/registry/components/v2-timeline-scheduler/TimelineSchedulerComponent.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import React, { useCallback, useMemo, useRef, useState } from "react";
+import React, { useCallback, useMemo, useRef } from "react";
 import {
   ChevronLeft,
   ChevronRight,
@@ -11,17 +11,16 @@ import {
   ZoomOut,
 } from "lucide-react";
 import { Button } from "@/components/ui/button";
-import { cn } from "@/lib/utils";
+import { toast } from "sonner";
 import {
   TimelineSchedulerComponentProps,
   ScheduleItem,
   ZoomLevel,
-  DragEvent,
-  ResizeEvent,
 } from "./types";
 import { useTimelineData } from "./hooks/useTimelineData";
-import { TimelineHeader, ResourceRow } from "./components";
+import { TimelineHeader, ResourceRow, TimelineLegend } from "./components";
 import { zoomLevelOptions, defaultTimelineSchedulerConfig } from "./config";
+import { detectConflicts, addDaysToDateString } from "./utils/conflictDetection";
 
 /**
  * v2-timeline-scheduler 메인 컴포넌트
@@ -45,19 +44,6 @@ export function TimelineSchedulerComponent({
 }: TimelineSchedulerComponentProps) {
   const containerRef = useRef<HTMLDivElement>(null);
 
-  // 드래그/리사이즈 상태
-  const [dragState, setDragState] = useState<{
-    schedule: ScheduleItem;
-    startX: number;
-    startY: number;
-  } | null>(null);
-
-  const [resizeState, setResizeState] = useState<{
-    schedule: ScheduleItem;
-    direction: "start" | "end";
-    startX: number;
-  } | null>(null);
-
   // 타임라인 데이터 훅
   const {
     schedules,
@@ -78,53 +64,43 @@ export function TimelineSchedulerComponent({
   const error = externalError ?? hookError;
 
   // 설정값
-  const rowHeight = config.rowHeight || defaultTimelineSchedulerConfig.rowHeight!;
-  const headerHeight = config.headerHeight || defaultTimelineSchedulerConfig.headerHeight!;
+  const rowHeight =
+    config.rowHeight || defaultTimelineSchedulerConfig.rowHeight!;
+  const headerHeight =
+    config.headerHeight || defaultTimelineSchedulerConfig.headerHeight!;
   const resourceColumnWidth =
-    config.resourceColumnWidth || defaultTimelineSchedulerConfig.resourceColumnWidth!;
-  const cellWidthConfig = config.cellWidth || defaultTimelineSchedulerConfig.cellWidth!;
+    config.resourceColumnWidth ||
+    defaultTimelineSchedulerConfig.resourceColumnWidth!;
+  const cellWidthConfig =
+    config.cellWidth || defaultTimelineSchedulerConfig.cellWidth!;
   const cellWidth = cellWidthConfig[zoomLevel] || 60;
 
-  // 리소스가 없으면 스케줄의 resourceId로 자동 생성
+  // 리소스 자동 생성 (리소스 테이블 미설정 시 스케줄 데이터에서 추출)
   const effectiveResources = useMemo(() => {
-    if (resources.length > 0) {
-      return resources;
-    }
+    if (resources.length > 0) return resources;
 
-    // 스케줄에서 고유한 resourceId 추출하여 자동 리소스 생성
     const uniqueResourceIds = new Set<string>();
-    schedules.forEach((schedule) => {
-      if (schedule.resourceId) {
-        uniqueResourceIds.add(schedule.resourceId);
-      }
+    schedules.forEach((s) => {
+      if (s.resourceId) uniqueResourceIds.add(s.resourceId);
     });
 
-    return Array.from(uniqueResourceIds).map((id) => ({
-      id,
-      name: id, // resourceId를 이름으로 사용
-    }));
+    return Array.from(uniqueResourceIds).map((id) => ({ id, name: id }));
   }, [resources, schedules]);
 
   // 리소스별 스케줄 그룹화
   const schedulesByResource = useMemo(() => {
     const grouped = new Map<string, ScheduleItem[]>();
 
-    effectiveResources.forEach((resource) => {
-      grouped.set(resource.id, []);
-    });
+    effectiveResources.forEach((r) => grouped.set(r.id, []));
 
     schedules.forEach((schedule) => {
       const list = grouped.get(schedule.resourceId);
       if (list) {
         list.push(schedule);
       } else {
-        // 리소스가 없는 스케줄은 첫 번째 리소스에 할당
         const firstResource = effectiveResources[0];
         if (firstResource) {
-          const firstList = grouped.get(firstResource.id);
-          if (firstList) {
-            firstList.push(schedule);
-          }
+          grouped.get(firstResource.id)?.push(schedule);
         }
       }
     });
@@ -132,27 +108,31 @@ export function TimelineSchedulerComponent({
     return grouped;
   }, [schedules, effectiveResources]);
 
-  // 줌 레벨 변경
+  // ────────── 충돌 감지 ──────────
+  const conflictIds = useMemo(() => {
+    if (config.showConflicts === false) return new Set<string>();
+    return detectConflicts(schedules);
+  }, [schedules, config.showConflicts]);
+
+  // ────────── 줌 레벨 변경 ──────────
   const handleZoomIn = useCallback(() => {
     const levels: ZoomLevel[] = ["month", "week", "day"];
-    const currentIdx = levels.indexOf(zoomLevel);
-    if (currentIdx < levels.length - 1) {
-      setZoomLevel(levels[currentIdx + 1]);
-    }
+    const idx = levels.indexOf(zoomLevel);
+    if (idx < levels.length - 1) setZoomLevel(levels[idx + 1]);
   }, [zoomLevel, setZoomLevel]);
 
   const handleZoomOut = useCallback(() => {
     const levels: ZoomLevel[] = ["month", "week", "day"];
-    const currentIdx = levels.indexOf(zoomLevel);
-    if (currentIdx > 0) {
-      setZoomLevel(levels[currentIdx - 1]);
-    }
+    const idx = levels.indexOf(zoomLevel);
+    if (idx > 0) setZoomLevel(levels[idx - 1]);
   }, [zoomLevel, setZoomLevel]);
 
-  // 스케줄 클릭 핸들러
+  // ────────── 스케줄 클릭 ──────────
   const handleScheduleClick = useCallback(
     (schedule: ScheduleItem) => {
-      const resource = effectiveResources.find((r) => r.id === schedule.resourceId);
+      const resource = effectiveResources.find(
+        (r) => r.id === schedule.resourceId
+      );
       if (resource && onScheduleClick) {
         onScheduleClick({ schedule, resource });
       }
@@ -160,7 +140,7 @@ export function TimelineSchedulerComponent({
     [effectiveResources, onScheduleClick]
   );
 
-  // 빈 셀 클릭 핸들러
+  // ────────── 빈 셀 클릭 ──────────
   const handleCellClick = useCallback(
     (resourceId: string, date: Date) => {
       if (onCellClick) {
@@ -173,47 +153,111 @@ export function TimelineSchedulerComponent({
     [onCellClick]
   );
 
-  // 드래그 시작
-  const handleDragStart = useCallback(
-    (schedule: ScheduleItem, e: React.MouseEvent) => {
-      setDragState({
-        schedule,
-        startX: e.clientX,
-        startY: e.clientY,
-      });
+  // ────────── 드래그 완료 (핵심 로직) ──────────
+  const handleDragComplete = useCallback(
+    async (schedule: ScheduleItem, deltaX: number) => {
+      // 줌 레벨에 따라 1셀당 일수가 달라짐
+      let daysPerCell = 1;
+      if (zoomLevel === "week") daysPerCell = 7;
+      if (zoomLevel === "month") daysPerCell = 30;
+
+      const deltaDays = Math.round((deltaX / cellWidth) * daysPerCell);
+      if (deltaDays === 0) return;
+
+      const newStartDate = addDaysToDateString(schedule.startDate, deltaDays);
+      const newEndDate = addDaysToDateString(schedule.endDate, deltaDays);
+
+      try {
+        await updateSchedule(schedule.id, {
+          startDate: newStartDate,
+          endDate: newEndDate,
+        });
+
+        // 외부 이벤트 핸들러 호출
+        onDragEnd?.({
+          scheduleId: schedule.id,
+          newStartDate,
+          newEndDate,
+        });
+
+        toast.success("스케줄 이동 완료", {
+          description: `${schedule.title}: ${newStartDate} ~ ${newEndDate}`,
+        });
+      } catch (err: any) {
+        toast.error("스케줄 이동 실패", {
+          description: err.message || "잠시 후 다시 시도해주세요",
+        });
+      }
     },
-    []
+    [cellWidth, zoomLevel, updateSchedule, onDragEnd]
   );
 
-  // 드래그 종료
-  const handleDragEnd = useCallback(() => {
-    if (dragState) {
-      // TODO: 드래그 결과 계산 및 업데이트
-      setDragState(null);
-    }
-  }, [dragState]);
+  // ────────── 리사이즈 완료 (핵심 로직) ──────────
+  const handleResizeComplete = useCallback(
+    async (
+      schedule: ScheduleItem,
+      direction: "start" | "end",
+      deltaX: number
+    ) => {
+      let daysPerCell = 1;
+      if (zoomLevel === "week") daysPerCell = 7;
+      if (zoomLevel === "month") daysPerCell = 30;
 
-  // 리사이즈 시작
-  const handleResizeStart = useCallback(
-    (schedule: ScheduleItem, direction: "start" | "end", e: React.MouseEvent) => {
-      setResizeState({
-        schedule,
-        direction,
-        startX: e.clientX,
-      });
+      const deltaDays = Math.round((deltaX / cellWidth) * daysPerCell);
+      if (deltaDays === 0) return;
+
+      let newStartDate = schedule.startDate;
+      let newEndDate = schedule.endDate;
+
+      if (direction === "start") {
+        newStartDate = addDaysToDateString(schedule.startDate, deltaDays);
+        // 시작일이 종료일을 넘지 않도록
+        if (new Date(newStartDate) >= new Date(newEndDate)) {
+          toast.warning("시작일은 종료일보다 이전이어야 합니다");
+          return;
+        }
+      } else {
+        newEndDate = addDaysToDateString(schedule.endDate, deltaDays);
+        // 종료일이 시작일보다 앞서지 않도록
+        if (new Date(newEndDate) <= new Date(newStartDate)) {
+          toast.warning("종료일은 시작일보다 이후여야 합니다");
+          return;
+        }
+      }
+
+      try {
+        await updateSchedule(schedule.id, {
+          startDate: newStartDate,
+          endDate: newEndDate,
+        });
+
+        onResizeEnd?.({
+          scheduleId: schedule.id,
+          newStartDate,
+          newEndDate,
+          direction,
+        });
+
+        const days =
+          Math.round(
+            (new Date(newEndDate).getTime() -
+              new Date(newStartDate).getTime()) /
+              (1000 * 60 * 60 * 24)
+          ) + 1;
+
+        toast.success("기간 변경 완료", {
+          description: `${schedule.title}: ${days}일 (${newStartDate} ~ ${newEndDate})`,
+        });
+      } catch (err: any) {
+        toast.error("기간 변경 실패", {
+          description: err.message || "잠시 후 다시 시도해주세요",
+        });
+      }
     },
-    []
+    [cellWidth, zoomLevel, updateSchedule, onResizeEnd]
   );
 
-  // 리사이즈 종료
-  const handleResizeEnd = useCallback(() => {
-    if (resizeState) {
-      // TODO: 리사이즈 결과 계산 및 업데이트
-      setResizeState(null);
-    }
-  }, [resizeState]);
-
-  // 추가 버튼 클릭
+  // ────────── 추가 버튼 클릭 ──────────
   const handleAddClick = useCallback(() => {
     if (onAddSchedule && effectiveResources.length > 0) {
       onAddSchedule(
@@ -223,7 +267,13 @@ export function TimelineSchedulerComponent({
     }
   }, [onAddSchedule, effectiveResources]);
 
-  // 디자인 모드 플레이스홀더
+  // ────────── 하단 영역 높이 계산 (툴바 + 범례) ──────────
+  const showToolbar = config.showToolbar !== false;
+  const showLegend = config.showLegend !== false;
+  const toolbarHeight = showToolbar ? 36 : 0;
+  const legendHeight = showLegend ? 28 : 0;
+
+  // ────────── 디자인 모드 플레이스홀더 ──────────
   if (isDesignMode) {
     return (
       <div className="flex h-full min-h-[200px] w-full items-center justify-center rounded-lg border-2 border-dashed border-muted-foreground/30 bg-muted/10">
@@ -240,7 +290,7 @@ export function TimelineSchedulerComponent({
     );
   }
 
-  // 로딩 상태
+  // ────────── 로딩 상태 ──────────
   if (isLoading) {
     return (
       <div
@@ -255,7 +305,7 @@ export function TimelineSchedulerComponent({
     );
   }
 
-  // 에러 상태
+  // ────────── 에러 상태 ──────────
   if (error) {
     return (
       <div
@@ -270,7 +320,7 @@ export function TimelineSchedulerComponent({
     );
   }
 
-  // 스케줄 데이터 없음
+  // ────────── 데이터 없음 ──────────
   if (schedules.length === 0) {
     return (
       <div
@@ -279,9 +329,12 @@ export function TimelineSchedulerComponent({
       >
         <div className="text-center text-muted-foreground">
           <Calendar className="mx-auto mb-2 h-8 w-8 opacity-50 sm:mb-3 sm:h-10 sm:w-10" />
-          <p className="text-xs font-medium sm:text-sm">스케줄 데이터가 없습니다</p>
+          <p className="text-xs font-medium sm:text-sm">
+            스케줄 데이터가 없습니다
+          </p>
           <p className="mt-1.5 max-w-[200px] text-[10px] sm:mt-2 sm:text-xs">
-            좌측 테이블에서 품목을 선택하거나,<br />
+            좌측 테이블에서 품목을 선택하거나,
+            <br />
             스케줄 생성 버튼을 눌러 스케줄을 생성하세요
           </p>
         </div>
@@ -289,18 +342,19 @@ export function TimelineSchedulerComponent({
     );
   }
 
+  // ────────── 메인 렌더링 ──────────
   return (
     <div
       ref={containerRef}
-      className="w-full overflow-hidden rounded-lg border bg-background"
+      className="flex w-full flex-col overflow-hidden rounded-lg border bg-background"
       style={{
         height: config.height || 500,
         maxHeight: config.maxHeight,
       }}
     >
       {/* 툴바 */}
-      {config.showToolbar !== false && (
-        <div className="flex items-center justify-between border-b bg-muted/30 px-2 py-1.5 sm:px-3 sm:py-2">
+      {showToolbar && (
+        <div className="flex shrink-0 items-center justify-between border-b bg-muted/30 px-2 py-1.5 sm:px-3 sm:py-2">
           {/* 네비게이션 */}
           <div className="flex items-center gap-0.5 sm:gap-1">
             {config.showNavigation !== false && (
@@ -332,16 +386,23 @@ export function TimelineSchedulerComponent({
               </>
             )}
 
-            {/* 현재 날짜 범위 표시 */}
+            {/* 날짜 범위 표시 */}
             <span className="ml-1 text-[10px] text-muted-foreground sm:ml-2 sm:text-sm">
               {viewStartDate.getFullYear()}년 {viewStartDate.getMonth() + 1}월{" "}
-              {viewStartDate.getDate()}일 ~{" "}
-              {viewEndDate.getMonth() + 1}월 {viewEndDate.getDate()}일
+              {viewStartDate.getDate()}일 ~ {viewEndDate.getMonth() + 1}월{" "}
+              {viewEndDate.getDate()}일
             </span>
           </div>
 
           {/* 오른쪽 컨트롤 */}
           <div className="flex items-center gap-1 sm:gap-2">
+            {/* 충돌 카운트 표시 */}
+            {config.showConflicts !== false && conflictIds.size > 0 && (
+              <span className="rounded-full bg-destructive/10 px-1.5 py-0.5 text-[9px] font-medium text-destructive sm:px-2 sm:text-[10px]">
+                충돌 {conflictIds.size}건
+              </span>
+            )}
+
             {/* 줌 컨트롤 */}
             {config.showZoomControls !== false && (
               <div className="flex items-center gap-0.5 sm:gap-1">
@@ -355,7 +416,10 @@ export function TimelineSchedulerComponent({
                   <ZoomOut className="h-3.5 w-3.5 sm:h-4 sm:w-4" />
                 </Button>
                 <span className="min-w-[20px] text-center text-[10px] text-muted-foreground sm:min-w-[24px] sm:text-xs">
-                  {zoomLevelOptions.find((o) => o.value === zoomLevel)?.label}
+                  {
+                    zoomLevelOptions.find((o) => o.value === zoomLevel)
+                      ?.label
+                  }
                 </span>
                 <Button
                   variant="ghost"
@@ -385,15 +449,8 @@ export function TimelineSchedulerComponent({
         </div>
       )}
 
-      {/* 타임라인 본문 */}
-      <div
-        className="overflow-auto"
-        style={{
-          height: config.showToolbar !== false
-            ? `calc(100% - 48px)`
-            : "100%",
-        }}
-      >
+      {/* 타임라인 본문 (스크롤 영역) */}
+      <div className="min-h-0 flex-1 overflow-auto">
         <div className="min-w-max">
           {/* 헤더 */}
           <TimelineHeader
@@ -420,17 +477,23 @@ export function TimelineSchedulerComponent({
                 cellWidth={cellWidth}
                 resourceColumnWidth={resourceColumnWidth}
                 config={config}
+                conflictIds={conflictIds}
                 onScheduleClick={handleScheduleClick}
                 onCellClick={handleCellClick}
-                onDragStart={handleDragStart}
-                onDragEnd={handleDragEnd}
-                onResizeStart={handleResizeStart}
-                onResizeEnd={handleResizeEnd}
+                onDragComplete={handleDragComplete}
+                onResizeComplete={handleResizeComplete}
               />
             ))}
           </div>
         </div>
       </div>
+
+      {/* 범례 */}
+      {showLegend && (
+        <div className="shrink-0">
+          <TimelineLegend config={config} />
+        </div>
+      )}
     </div>
   );
 }

frontend/lib/registry/components/v2-timeline-scheduler/components/ResourceRow.tsx

@@ -2,54 +2,44 @@
 
 import React, { useMemo } from "react";
 import { cn } from "@/lib/utils";
-import { Resource, ScheduleItem, ZoomLevel, TimelineSchedulerConfig } from "../types";
+import {
+  Resource,
+  ScheduleItem,
+  ZoomLevel,
+  TimelineSchedulerConfig,
+} from "../types";
 import { ScheduleBar } from "./ScheduleBar";
 
 interface ResourceRowProps {
-  /** 리소스 */
   resource: Resource;
-  /** 해당 리소스의 스케줄 목록 */
   schedules: ScheduleItem[];
-  /** 시작 날짜 */
   startDate: Date;
-  /** 종료 날짜 */
   endDate: Date;
-  /** 줌 레벨 */
   zoomLevel: ZoomLevel;
-  /** 행 높이 */
   rowHeight: number;
-  /** 셀 너비 */
   cellWidth: number;
-  /** 리소스 컬럼 너비 */
   resourceColumnWidth: number;
-  /** 설정 */
   config: TimelineSchedulerConfig;
-  /** 스케줄 클릭 */
+  /** 충돌 스케줄 ID 목록 */
+  conflictIds?: Set<string>;
   onScheduleClick?: (schedule: ScheduleItem) => void;
-  /** 빈 셀 클릭 */
   onCellClick?: (resourceId: string, date: Date) => void;
-  /** 드래그 시작 */
-  onDragStart?: (schedule: ScheduleItem, e: React.MouseEvent) => void;
-  /** 드래그 종료 */
-  onDragEnd?: () => void;
-  /** 리사이즈 시작 */
-  onResizeStart?: (schedule: ScheduleItem, direction: "start" | "end", e: React.MouseEvent) => void;
-  /** 리사이즈 종료 */
-  onResizeEnd?: () => void;
+  /** 드래그 완료: deltaX(픽셀) 전달 */
+  onDragComplete?: (schedule: ScheduleItem, deltaX: number) => void;
+  /** 리사이즈 완료: direction + deltaX(픽셀) 전달 */
+  onResizeComplete?: (
+    schedule: ScheduleItem,
+    direction: "start" | "end",
+    deltaX: number
+  ) => void;
 }
 
-/**
- * 날짜 차이 계산 (일수)
- */
 const getDaysDiff = (start: Date, end: Date): number => {
   const startTime = new Date(start).setHours(0, 0, 0, 0);
   const endTime = new Date(end).setHours(0, 0, 0, 0);
   return Math.round((endTime - startTime) / (1000 * 60 * 60 * 24));
 };
 
-/**
- * 날짜 범위 내의 셀 개수 계산
- */
 const getCellCount = (startDate: Date, endDate: Date): number => {
   return getDaysDiff(startDate, endDate) + 1;
 };
@@ -64,20 +54,18 @@ export function ResourceRow({
   cellWidth,
   resourceColumnWidth,
   config,
+  conflictIds,
   onScheduleClick,
   onCellClick,
-  onDragStart,
-  onDragEnd,
-  onResizeStart,
-  onResizeEnd,
+  onDragComplete,
+  onResizeComplete,
 }: ResourceRowProps) {
-  // 총 셀 개수
-  const totalCells = useMemo(() => getCellCount(startDate, endDate), [startDate, endDate]);
-
-  // 총 그리드 너비
+  const totalCells = useMemo(
+    () => getCellCount(startDate, endDate),
+    [startDate, endDate]
+  );
   const gridWidth = totalCells * cellWidth;
 
-  // 오늘 날짜
   const today = useMemo(() => {
     const d = new Date();
     d.setHours(0, 0, 0, 0);
@@ -92,21 +80,26 @@ export function ResourceRow({
       scheduleStart.setHours(0, 0, 0, 0);
       scheduleEnd.setHours(0, 0, 0, 0);
 
-      // 시작 위치 계산
       const startOffset = getDaysDiff(startDate, scheduleStart);
       const left = Math.max(0, startOffset * cellWidth);
 
-      // 너비 계산
       const durationDays = getDaysDiff(scheduleStart, scheduleEnd) + 1;
       const visibleStartOffset = Math.max(0, startOffset);
       const visibleEndOffset = Math.min(
         totalCells,
         startOffset + durationDays
       );
-      const width = Math.max(cellWidth, (visibleEndOffset - visibleStartOffset) * cellWidth);
+      const width = Math.max(
+        cellWidth,
+        (visibleEndOffset - visibleStartOffset) * cellWidth
+      );
+
+      // 시작일 = 종료일이면 마일스톤
+      const isMilestone = schedule.startDate === schedule.endDate;
 
       return {
         schedule,
+        isMilestone,
         position: {
           left: resourceColumnWidth + left,
           top: 0,
@@ -115,9 +108,15 @@ export function ResourceRow({
         },
       };
     });
-  }, [schedules, startDate, cellWidth, resourceColumnWidth, rowHeight, totalCells]);
+  }, [
+    schedules,
+    startDate,
+    cellWidth,
+    resourceColumnWidth,
+    rowHeight,
+    totalCells,
+  ]);
 
-  // 그리드 셀 클릭 핸들러
   const handleGridClick = (e: React.MouseEvent<HTMLDivElement>) => {
     if (!onCellClick) return;
 
@@ -142,7 +141,9 @@ export function ResourceRow({
         style={{ width: resourceColumnWidth }}
       >
         <div className="truncate">
-          <div className="truncate text-[10px] font-medium sm:text-sm">{resource.name}</div>
+          <div className="truncate text-[10px] font-medium sm:text-sm">
+            {resource.name}
+          </div>
           {resource.group && (
             <div className="truncate text-[9px] text-muted-foreground sm:text-xs">
               {resource.group}
@@ -162,7 +163,8 @@ export function ResourceRow({
           {Array.from({ length: totalCells }).map((_, idx) => {
             const cellDate = new Date(startDate);
             cellDate.setDate(cellDate.getDate() + idx);
-            const isWeekend = cellDate.getDay() === 0 || cellDate.getDay() === 6;
+            const isWeekend =
+              cellDate.getDay() === 0 || cellDate.getDay() === 6;
             const isToday = cellDate.getTime() === today.getTime();
             const isMonthStart = cellDate.getDate() === 1;
 
@@ -182,22 +184,22 @@ export function ResourceRow({
         </div>
 
         {/* 스케줄 바들 */}
-        {schedulePositions.map(({ schedule, position }) => (
+        {schedulePositions.map(({ schedule, position, isMilestone }) => (
           <ScheduleBar
             key={schedule.id}
             schedule={schedule}
             position={{
               ...position,
-              left: position.left - resourceColumnWidth, // 상대 위치
+              left: position.left - resourceColumnWidth,
             }}
             config={config}
             draggable={config.draggable}
             resizable={config.resizable}
+            hasConflict={conflictIds?.has(schedule.id) ?? false}
+            isMilestone={isMilestone}
             onClick={() => onScheduleClick?.(schedule)}
-            onDragStart={onDragStart}
-            onDragEnd={onDragEnd}
-            onResizeStart={onResizeStart}
-            onResizeEnd={onResizeEnd}
+            onDragComplete={onDragComplete}
+            onResizeComplete={onResizeComplete}
           />
         ))}
       </div>

frontend/lib/registry/components/v2-timeline-scheduler/components/ScheduleBar.tsx

@@ -2,79 +2,99 @@
 
 import React, { useState, useCallback, useRef } from "react";
 import { cn } from "@/lib/utils";
-import { ScheduleItem, ScheduleBarPosition, TimelineSchedulerConfig } from "../types";
+import { AlertTriangle } from "lucide-react";
+import {
+  ScheduleItem,
+  ScheduleBarPosition,
+  TimelineSchedulerConfig,
+} from "../types";
 import { statusOptions } from "../config";
 
 interface ScheduleBarProps {
-  /** 스케줄 항목 */
   schedule: ScheduleItem;
-  /** 위치 정보 */
   position: ScheduleBarPosition;
-  /** 설정 */
   config: TimelineSchedulerConfig;
-  /** 드래그 가능 여부 */
   draggable?: boolean;
-  /** 리사이즈 가능 여부 */
   resizable?: boolean;
-  /** 클릭 이벤트 */
+  hasConflict?: boolean;
+  isMilestone?: boolean;
   onClick?: (schedule: ScheduleItem) => void;
-  /** 드래그 시작 */
-  onDragStart?: (schedule: ScheduleItem, e: React.MouseEvent) => void;
-  /** 드래그 중 */
-  onDrag?: (deltaX: number, deltaY: number) => void;
-  /** 드래그 종료 */
-  onDragEnd?: () => void;
-  /** 리사이즈 시작 */
-  onResizeStart?: (schedule: ScheduleItem, direction: "start" | "end", e: React.MouseEvent) => void;
-  /** 리사이즈 중 */
-  onResize?: (deltaX: number, direction: "start" | "end") => void;
-  /** 리사이즈 종료 */
-  onResizeEnd?: () => void;
+  /** 드래그 완료 시 deltaX(픽셀) 전달 */
+  onDragComplete?: (schedule: ScheduleItem, deltaX: number) => void;
+  /** 리사이즈 완료 시 direction과 deltaX(픽셀) 전달 */
+  onResizeComplete?: (
+    schedule: ScheduleItem,
+    direction: "start" | "end",
+    deltaX: number
+  ) => void;
 }
 
+// 드래그/리사이즈 판정 최소 이동 거리 (px)
+const MIN_MOVE_THRESHOLD = 5;
+
 export function ScheduleBar({
   schedule,
   position,
   config,
   draggable = true,
   resizable = true,
+  hasConflict = false,
+  isMilestone = false,
   onClick,
-  onDragStart,
-  onDragEnd,
-  onResizeStart,
-  onResizeEnd,
+  onDragComplete,
+  onResizeComplete,
 }: ScheduleBarProps) {
   const [isDragging, setIsDragging] = useState(false);
   const [isResizing, setIsResizing] = useState(false);
+  const [dragOffset, setDragOffset] = useState(0);
+  const [resizeOffset, setResizeOffset] = useState(0);
+  const [resizeDir, setResizeDir] = useState<"start" | "end">("end");
   const barRef = useRef<HTMLDivElement>(null);
+  const startXRef = useRef(0);
+  const movedRef = useRef(false);
 
-  // 상태에 따른 색상
-  const statusColor = schedule.color || 
+  const statusColor =
+    schedule.color ||
     config.statusColors?.[schedule.status] ||
     statusOptions.find((s) => s.value === schedule.status)?.color ||
     "#3b82f6";
 
-  // 진행률 바 너비
-  const progressWidth = config.showProgress && schedule.progress !== undefined
-    ? `${schedule.progress}%`
-    : "0%";
+  const progressWidth =
+    config.showProgress && schedule.progress !== undefined
+      ? `${schedule.progress}%`
+      : "0%";
 
-  // 드래그 시작 핸들러
+  const isEditable = config.editable !== false;
+
+  // ────────── 드래그 핸들러 ──────────
   const handleMouseDown = useCallback(
     (e: React.MouseEvent) => {
-      if (!draggable || isResizing) return;
+      if (!draggable || isResizing || !isEditable) return;
       e.preventDefault();
       e.stopPropagation();
+
+      startXRef.current = e.clientX;
+      movedRef.current = false;
       setIsDragging(true);
-      onDragStart?.(schedule, e);
+      setDragOffset(0);
 
       const handleMouseMove = (moveEvent: MouseEvent) => {
-        // 드래그 중 로직은 부모에서 처리
+        const delta = moveEvent.clientX - startXRef.current;
+        if (Math.abs(delta) > MIN_MOVE_THRESHOLD) {
+          movedRef.current = true;
+        }
+        setDragOffset(delta);
       };
 
-      const handleMouseUp = () => {
+      const handleMouseUp = (upEvent: MouseEvent) => {
+        const finalDelta = upEvent.clientX - startXRef.current;
         setIsDragging(false);
-        onDragEnd?.();
+        setDragOffset(0);
+
+        if (movedRef.current && Math.abs(finalDelta) > MIN_MOVE_THRESHOLD) {
+          onDragComplete?.(schedule, finalDelta);
+        }
+
         document.removeEventListener("mousemove", handleMouseMove);
         document.removeEventListener("mouseup", handleMouseUp);
       };
@@ -82,25 +102,39 @@ export function ScheduleBar({
       document.addEventListener("mousemove", handleMouseMove);
       document.addEventListener("mouseup", handleMouseUp);
     },
-    [draggable, isResizing, schedule, onDragStart, onDragEnd]
+    [draggable, isResizing, isEditable, schedule, onDragComplete]
   );
 
-  // 리사이즈 시작 핸들러
-  const handleResizeStart = useCallback(
+  // ────────── 리사이즈 핸들러 ──────────
+  const handleResizeMouseDown = useCallback(
     (direction: "start" | "end", e: React.MouseEvent) => {
-      if (!resizable) return;
+      if (!resizable || !isEditable) return;
       e.preventDefault();
       e.stopPropagation();
+
+      startXRef.current = e.clientX;
+      movedRef.current = false;
       setIsResizing(true);
-      onResizeStart?.(schedule, direction, e);
+      setResizeOffset(0);
+      setResizeDir(direction);
 
       const handleMouseMove = (moveEvent: MouseEvent) => {
-        // 리사이즈 중 로직은 부모에서 처리
+        const delta = moveEvent.clientX - startXRef.current;
+        if (Math.abs(delta) > MIN_MOVE_THRESHOLD) {
+          movedRef.current = true;
+        }
+        setResizeOffset(delta);
       };
 
-      const handleMouseUp = () => {
+      const handleMouseUp = (upEvent: MouseEvent) => {
+        const finalDelta = upEvent.clientX - startXRef.current;
         setIsResizing(false);
-        onResizeEnd?.();
+        setResizeOffset(0);
+
+        if (movedRef.current && Math.abs(finalDelta) > MIN_MOVE_THRESHOLD) {
+          onResizeComplete?.(schedule, direction, finalDelta);
+        }
+
         document.removeEventListener("mousemove", handleMouseMove);
         document.removeEventListener("mouseup", handleMouseUp);
       };
@@ -108,19 +142,62 @@ export function ScheduleBar({
       document.addEventListener("mousemove", handleMouseMove);
       document.addEventListener("mouseup", handleMouseUp);
     },
-    [resizable, schedule, onResizeStart, onResizeEnd]
+    [resizable, isEditable, schedule, onResizeComplete]
   );
 
-  // 클릭 핸들러
+  // ────────── 클릭 핸들러 ──────────
   const handleClick = useCallback(
     (e: React.MouseEvent) => {
-      if (isDragging || isResizing) return;
+      if (movedRef.current) return;
       e.stopPropagation();
       onClick?.(schedule);
     },
-    [isDragging, isResizing, onClick, schedule]
+    [onClick, schedule]
   );
 
+  // ────────── 드래그/리사이즈 중 시각적 위치 계산 ──────────
+  let visualLeft = position.left;
+  let visualWidth = position.width;
+
+  if (isDragging) {
+    visualLeft += dragOffset;
+  }
+
+  if (isResizing) {
+    if (resizeDir === "start") {
+      visualLeft += resizeOffset;
+      visualWidth -= resizeOffset;
+    } else {
+      visualWidth += resizeOffset;
+    }
+  }
+
+  visualWidth = Math.max(10, visualWidth);
+
+  // ────────── 마일스톤 렌더링 (단일 날짜 마커) ──────────
+  if (isMilestone) {
+    return (
+      <div
+        ref={barRef}
+        className="absolute flex cursor-pointer items-center justify-center"
+        style={{
+          left: visualLeft + position.width / 2 - 8,
+          top: position.top + position.height / 2 - 8,
+          width: 16,
+          height: 16,
+        }}
+        onClick={handleClick}
+        title={schedule.title}
+      >
+        <div
+          className="h-2.5 w-2.5 rotate-45 shadow-sm transition-transform hover:scale-125 sm:h-3 sm:w-3"
+          style={{ backgroundColor: statusColor }}
+        />
+      </div>
+    );
+  }
+
+  // ────────── 일반 스케줄 바 렌더링 ──────────
   return (
     <div
       ref={barRef}
@@ -128,19 +205,21 @@ export function ScheduleBar({
         "absolute cursor-pointer rounded-md shadow-sm transition-shadow",
         "hover:z-10 hover:shadow-md",
         isDragging && "z-20 opacity-70 shadow-lg",
-        isResizing && "z-20",
-        draggable && "cursor-grab",
-        isDragging && "cursor-grabbing"
+        isResizing && "z-20 opacity-80",
+        draggable && isEditable && "cursor-grab",
+        isDragging && "cursor-grabbing",
+        hasConflict && "ring-2 ring-destructive ring-offset-1"
       )}
       style={{
-        left: position.left,
+        left: visualLeft,
         top: position.top + 4,
-        width: position.width,
+        width: visualWidth,
         height: position.height - 8,
         backgroundColor: statusColor,
       }}
       onClick={handleClick}
       onMouseDown={handleMouseDown}
+      title={schedule.title}
     >
       {/* 진행률 바 */}
       {config.showProgress && schedule.progress !== undefined && (
@@ -162,19 +241,26 @@ export function ScheduleBar({
         </div>
       )}
 
+      {/* 충돌 인디케이터 */}
+      {hasConflict && (
+        <div className="absolute -right-0.5 -top-0.5 sm:-right-1 sm:-top-1">
+          <AlertTriangle className="h-2.5 w-2.5 fill-destructive text-white sm:h-3 sm:w-3" />
+        </div>
+      )}
+
       {/* 리사이즈 핸들 - 왼쪽 */}
-      {resizable && (
+      {resizable && isEditable && (
         <div
           className="absolute bottom-0 left-0 top-0 w-1.5 cursor-ew-resize rounded-l-md hover:bg-white/20 sm:w-2"
-          onMouseDown={(e) => handleResizeStart("start", e)}
+          onMouseDown={(e) => handleResizeMouseDown("start", e)}
         />
       )}
 
       {/* 리사이즈 핸들 - 오른쪽 */}
-      {resizable && (
+      {resizable && isEditable && (
         <div
           className="absolute bottom-0 right-0 top-0 w-1.5 cursor-ew-resize rounded-r-md hover:bg-white/20 sm:w-2"
-          onMouseDown={(e) => handleResizeStart("end", e)}
+          onMouseDown={(e) => handleResizeMouseDown("end", e)}
         />
       )}
     </div>

frontend/lib/registry/components/v2-timeline-scheduler/components/TimelineLegend.tsx

@@ -0,0 +1,55 @@
+"use client";
+
+import React from "react";
+import { TimelineSchedulerConfig } from "../types";
+import { statusOptions } from "../config";
+
+interface TimelineLegendProps {
+  config: TimelineSchedulerConfig;
+}
+
+export function TimelineLegend({ config }: TimelineLegendProps) {
+  const colors = config.statusColors || {};
+
+  return (
+    <div className="flex flex-wrap items-center gap-2 border-t bg-muted/20 px-2 py-1 sm:gap-3 sm:px-3 sm:py-1.5">
+      <span className="text-[10px] font-medium text-muted-foreground sm:text-xs">
+        범례:
+      </span>
+      {statusOptions.map((status) => (
+        <div key={status.value} className="flex items-center gap-1">
+          <div
+            className="h-2 w-4 rounded-sm sm:h-2.5 sm:w-5"
+            style={{
+              backgroundColor:
+                colors[status.value as keyof typeof colors] || status.color,
+            }}
+          />
+          <span className="text-[9px] text-muted-foreground sm:text-[10px]">
+            {status.label}
+          </span>
+        </div>
+      ))}
+
+      {/* 마일스톤 범례 */}
+      <div className="flex items-center gap-1">
+        <div className="flex h-2.5 w-4 items-center justify-center sm:h-3 sm:w-5">
+          <div className="h-1.5 w-1.5 rotate-45 bg-foreground/60 sm:h-2 sm:w-2" />
+        </div>
+        <span className="text-[9px] text-muted-foreground sm:text-[10px]">
+          마일스톤
+        </span>
+      </div>
+
+      {/* 충돌 범례 */}
+      {config.showConflicts && (
+        <div className="flex items-center gap-1">
+          <div className="h-2 w-4 rounded-sm ring-1.5 ring-destructive sm:h-2.5 sm:w-5" />
+          <span className="text-[9px] text-muted-foreground sm:text-[10px]">
+            충돌
+          </span>
+        </div>
+      )}
+    </div>
+  );
+}

frontend/lib/registry/components/v2-timeline-scheduler/components/index.ts

@@ -1,3 +1,4 @@
 export { TimelineHeader } from "./TimelineHeader";
 export { ScheduleBar } from "./ScheduleBar";
 export { ResourceRow } from "./ResourceRow";
+export { TimelineLegend } from "./TimelineLegend";

frontend/lib/registry/components/v2-timeline-scheduler/utils/conflictDetection.ts

@@ -0,0 +1,58 @@
+"use client";
+
+import { ScheduleItem } from "../types";
+
+/**
+ * 같은 리소스에서 시간이 겹치는 스케줄을 감지
+ * @returns 충돌이 있는 스케줄 ID Set
+ */
+export function detectConflicts(schedules: ScheduleItem[]): Set<string> {
+  const conflictIds = new Set<string>();
+
+  // 리소스별로 그룹화
+  const byResource = new Map<string, ScheduleItem[]>();
+  for (const schedule of schedules) {
+    if (!byResource.has(schedule.resourceId)) {
+      byResource.set(schedule.resourceId, []);
+    }
+    byResource.get(schedule.resourceId)!.push(schedule);
+  }
+
+  // 리소스별 충돌 검사
+  for (const [, resourceSchedules] of byResource) {
+    if (resourceSchedules.length < 2) continue;
+
+    // 시작일 기준 정렬
+    const sorted = [...resourceSchedules].sort(
+      (a, b) => new Date(a.startDate).getTime() - new Date(b.startDate).getTime()
+    );
+
+    for (let i = 0; i < sorted.length; i++) {
+      const aEnd = new Date(sorted[i].endDate).getTime();
+
+      for (let j = i + 1; j < sorted.length; j++) {
+        const bStart = new Date(sorted[j].startDate).getTime();
+
+        // 정렬되어 있으므로 aStart <= bStart
+        // 겹치는 조건: aEnd > bStart
+        if (aEnd > bStart) {
+          conflictIds.add(sorted[i].id);
+          conflictIds.add(sorted[j].id);
+        } else {
+          break;
+        }
+      }
+    }
+  }
+
+  return conflictIds;
+}
+
+/**
+ * 날짜를 일수만큼 이동
+ */
+export function addDaysToDateString(dateStr: string, days: number): string {
+  const date = new Date(dateStr);
+  date.setDate(date.getDate() + days);
+  return date.toISOString().split("T")[0];
+}