fix(tasktree): align active timeline presentation

internal/tasktree/store.ts

@@ -154,7 +154,12 @@ export class TaskTreeStore {
       LEFT JOIN tasktree_tasks t ON t.group_id=g.id
       LEFT JOIN tasktree_execution_reports r ON r.task_id=t.id
       GROUP BY g.id
-      ORDER BY g.updated_at DESC, g.name
+      ORDER BY GREATEST(
+        g.updated_at,
+        COALESCE(MAX(t.updated_at),g.updated_at),
+        COALESCE(MAX(r.created_at),g.updated_at),
+        COALESCE((SELECT MAX(m.created_at) FROM tasktree_milestones m WHERE m.group_id=g.id),g.updated_at)
+      ) DESC, g.name
     `);
     return result.rows.map(overviewRow);
   }
@@ -338,11 +343,25 @@ export class TaskTreeStore {
 
   async createReport(input: { taskId: string; title: string; body: string; status?: string }): Promise<ExecutionReport> {
     await this.ensureSchema();
-    const result = await this.pool.query(
-      "INSERT INTO tasktree_execution_reports (id,task_id,title,body,status) VALUES ($1,$2,$3,$4,$5) RETURNING *",
-      [`tr_${randomUUID()}`, input.taskId, input.title, input.body, input.status ?? "succeeded"]
-    );
-    return reportRow(result.rows[0]);
+    const client = await this.pool.connect();
+    try {
+      await client.query("BEGIN");
+      const result = await client.query(
+        "INSERT INTO tasktree_execution_reports (id,task_id,title,body,status) VALUES ($1,$2,$3,$4,$5) RETURNING *",
+        [`tr_${randomUUID()}`, input.taskId, input.title, input.body, input.status ?? "succeeded"]
+      );
+      await client.query(
+        "UPDATE tasktree_groups g SET updated_at=now() FROM tasktree_tasks t WHERE t.id=$1 AND g.id=t.group_id",
+        [input.taskId]
+      );
+      await client.query("COMMIT");
+      return reportRow(result.rows[0]);
+    } catch (error) {
+      await client.query("ROLLBACK").catch(() => {});
+      throw error;
+    } finally {
+      client.release();
+    }
   }
 
   async listReports(taskId: string): Promise<ExecutionReport[]> {

web/hwlab-cloud-web/src/views/projects/TaskTreeView.vue

@@ -20,6 +20,7 @@ const collapsedTaskIds = ref(new Set<string>());
 const timelineHeaderElement = ref<HTMLElement | null>(null);
 const taskLabelsElement = ref<HTMLElement | null>(null);
 const timelineBodyElement = ref<HTMLElement | null>(null);
+const timelineScrollbarWidth = ref(0);
 const labelChildScrollers = new Map<string, HTMLElement>();
 const timelineChildScrollers = new Map<string, HTMLElement>();
 const initializedChildGroups = new Set<string>();
@@ -28,6 +29,7 @@ const timelineScaleIndex = ref(1);
 const taskColumnWidth = ref(typeof window !== "undefined" ? Math.round(window.innerWidth * (window.innerWidth <= 720 ? 0.55 : 0.21)) : 400);
 const loading = ref(false);
 const error = ref<string | null>(null);
+let positionedView = "";
 const groupId = computed(() => String(route.params.groupId || ""));
 const displayTime = displayTimeConfig();
 const displayPartsFormatter = new Intl.DateTimeFormat(displayTime.locale, {
@@ -113,6 +115,8 @@ async function loadActiveView() {
   if (!groupId.value) {
     timeline.value = null;
     loading.value = false;
+    await nextTick();
+    positionTimelineAtNow("global");
     return;
   }
   const timelineResponse = await tasktreeAPI.timeline(groupId.value);
@@ -124,6 +128,8 @@ async function loadActiveView() {
   timeline.value = timelineResponse.data.data;
   initializedChildGroups.clear();
   syncSelectedTaskFromRoute();
+  await nextTick();
+  positionTimelineAtNow(groupId.value);
 }
 function selectGroup(event: Event) {
   const value = (event.target as HTMLSelectElement).value;
@@ -282,13 +288,18 @@ async function changeTimelineScale(direction: -1 | 1) {
 function syncTimelineBody() {
   const body = timelineBodyElement.value;
   if (!body) return;
+  timelineScrollbarWidth.value = Math.max(0, body.offsetWidth - body.clientWidth);
   if (timelineHeaderElement.value && timelineHeaderElement.value.scrollLeft !== body.scrollLeft) timelineHeaderElement.value.scrollLeft = body.scrollLeft;
   if (taskLabelsElement.value && taskLabelsElement.value.scrollTop !== body.scrollTop) taskLabelsElement.value.scrollTop = body.scrollTop;
 }
-function syncTimelineHeader() {
-  const header = timelineHeaderElement.value;
+function positionTimelineAtNow(view: string) {
   const body = timelineBodyElement.value;
-  if (header && body && body.scrollLeft !== header.scrollLeft) body.scrollLeft = header.scrollLeft;
+  if (!body || positionedView === view) return;
+  timelineScrollbarWidth.value = Math.max(0, body.offsetWidth - body.clientWidth);
+  const now = todayOffset.value;
+  body.scrollLeft = now === null ? 0 : Math.max(0, Math.min(body.scrollWidth - body.clientWidth, body.scrollWidth * now / 100 - body.clientWidth * 0.8));
+  if (timelineHeaderElement.value) timelineHeaderElement.value.scrollLeft = body.scrollLeft;
+  positionedView = view;
 }
 function syncTaskLabels() {
   const labels = taskLabelsElement.value;
@@ -321,8 +332,10 @@ function displaySerial(date: Date) { const parts = displayParts(date); return Da
 function displayDaySerial(date: Date) { const parts = displayParts(date); return Date.UTC(parts.year, parts.month - 1, parts.day); }
 function barStyle(item: { startAt: string | null; dueAt: string | null }) {
   const start = displaySerial(new Date(item.startAt || item.dueAt || range.value.start)); const end = displaySerial(new Date(item.dueAt || item.startAt || range.value.start)); const unit = 100 / range.value.dayCount;
-  const left = Math.max(0, (start - displaySerial(range.value.start)) / 86400000) * unit; const width = Math.max(unit * 0.65, ((end - start) / 86400000) * unit);
-  return { left: `${left}%`, width: `${Math.min(100 - left, width)}%` };
+  const rangeStart = displaySerial(range.value.start);
+  const left = Math.max(0, (start - rangeStart) / 86400000) * unit;
+  const rightEdge = Math.min(100, Math.max(left, (end - rangeStart) / 86400000 * unit));
+  return { right: `${100 - rightEdge}%`, width: `${Math.max(0, rightEdge - left)}%` };
 }
 function trackStyle() {
   return {
@@ -393,7 +406,14 @@ function syncSelectedTaskFromRoute() {
 
 <template>
   <main class="tasktree-page" data-testid="tasktree-page">
-    <AsyncBoundary :state="asyncState" title="TaskTree 暂无任务" :message="error || '通过 CLI 创建 taskgroup 和任务后会显示在时间轴中。'" @retry="loadActiveView">
+    <AsyncBoundary
+      :state="asyncState"
+      empty-title="TaskTree 暂无任务"
+      empty-description="通过 CLI 创建 taskgroup 和任务后会显示在时间轴中。"
+      error-title="TaskTree 加载失败"
+      :error="error || '请求未完成，请稍后重试。'"
+      @retry="loadActiveView"
+    >
       <div v-if="isGlobalView || timeline" class="tasktree-view-layout" :class="{ docked: detailMode === 'docked' && selectedTask }">
         <section class="tasktree-workspace" aria-label="TaskTree 甘特图">
         <header class="tasktree-context">
@@ -416,7 +436,7 @@ function syncSelectedTaskFromRoute() {
             <button class="icon-button tasktree-refresh" type="button" title="刷新" aria-label="刷新" :disabled="loading" @click="loadActiveView"><RefreshCw :size="15" aria-hidden="true" /></button>
           </div>
         </header>
-        <div class="tasktree-gantt" :class="{ 'global-view': isGlobalView, 'has-today': todayOffset !== null }" :style="{ '--task-column-width': `${taskColumnWidth}px`, '--tick-count': timelineTicks.length, '--tick-width': `${timelineScale.tickWidth}px`, '--timeline-width': `${timelineWidth}px`, '--today-left': `${todayOffset ?? 0}%` }">
+        <div class="tasktree-gantt" :class="{ 'global-view': isGlobalView, 'has-today': todayOffset !== null }" :style="{ '--task-column-width': `${taskColumnWidth}px`, '--tick-count': timelineTicks.length, '--tick-width': `${timelineScale.tickWidth}px`, '--timeline-width': `${timelineWidth}px`, '--today-left': `${todayOffset ?? 0}%`, '--timeline-scrollbar-width': `${timelineScrollbarWidth}px` }">
           <div class="tasktree-corner">{{ isGlobalView ? 'TaskGroup' : '任务' }}</div>
           <div
             class="tasktree-column-resizer"
@@ -430,7 +450,7 @@ function syncSelectedTaskFromRoute() {
             @pointerdown="startTaskColumnResize"
             @keydown="resizeTaskColumnByKeyboard"
           />
-          <div ref="timelineHeaderElement" class="tasktree-timeline-header" @scroll="syncTimelineHeader">
+          <div ref="timelineHeaderElement" class="tasktree-timeline-header">
             <div class="tasktree-days">
               <span v-for="tick in timelineTicks" :key="tick.toISOString()" :class="tickClass(tick)">{{ tickLabel(tick) }}</span>
             </div>
@@ -605,7 +625,7 @@ function syncSelectedTaskFromRoute() {
 .tasktree-column-resizer:focus-visible::after,
 .tasktree-column-resizer:active::after { background: #2376c9; }
 .tasktree-corner { display: flex; align-items: center; padding: 0 14px; border-right: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); background: transparent; font-size: 11px; font-weight: 700; }
-.tasktree-timeline-header { min-width: 0; overflow-x: auto; overflow-y: hidden; border-bottom: 1px solid #dfe5e4; background: #fbfcfc; scrollbar-width: none; overscroll-behavior-inline: contain; }
+.tasktree-timeline-header { min-width: 0; overflow: hidden; padding-right: var(--timeline-scrollbar-width); border-bottom: 1px solid #dfe5e4; background: #fbfcfc; scrollbar-width: none; }
 .tasktree-timeline-header::-webkit-scrollbar { display: none; }
 .tasktree-days { position: relative; width: max(100%, var(--timeline-width)); height: 100%; display: grid; grid-template-columns: repeat(var(--tick-count), minmax(var(--tick-width), 1fr)); }
 .tasktree-days span { position: relative; display: flex; align-items: center; justify-content: center; min-width: 0; padding: 0 4px; overflow: hidden; border-right: 1px solid #e6ebea; color: #68777a; font-family: var(--console-font-mono); font-size: 10px; white-space: nowrap; }