feat: overall completion bar on project cards; auto-collapse done milestones

ProjectListView: add an overall task completion bar above the per-milestone
bars showing the percentage of all project tasks that are done.

ProjectView: milestones where every task is complete now start collapsed
by default, keeping the view clean for projects with many finished stages.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/views/ProjectListView.vue

@@ -113,6 +113,14 @@ function truncate(text: string | null, max = 120): string {
   if (!text) return "";
   return text.length > max ? text.slice(0, max) + "..." : text;
 }
+
+function overallPct(project: Project): { total: number; pct: number } {
+  const counts = project.summary?.task_counts;
+  if (!counts) return { total: 0, pct: 0 };
+  const total = (counts.todo ?? 0) + (counts.in_progress ?? 0) + (counts.done ?? 0);
+  const pct = total > 0 ? Math.round((counts.done ?? 0) / total * 100) : 0;
+  return { total, pct };
+}
 </script>
 
 <template>
@@ -164,6 +172,18 @@ function truncate(text: string | null, max = 120): string {
         </p>
         <p v-if="project.description" class="project-desc">{{ truncate(project.description) }}</p>
 
+        <!-- Overall completion bar -->
+        <div
+          v-if="overallPct(project).total > 0"
+          class="overall-bar-row"
+          :title="`${project.summary?.task_counts.done ?? 0} of ${overallPct(project).total} tasks complete`"
+        >
+          <div class="overall-bar-track">
+            <div class="overall-bar-fill" :style="{ width: overallPct(project).pct + '%' }"></div>
+          </div>
+          <span class="overall-bar-pct">{{ overallPct(project).pct }}%</span>
+        </div>
+
         <!-- Milestone progress bars -->
         <div
           v-if="project.summary?.milestone_summary?.length"
@@ -417,6 +437,34 @@ function truncate(text: string | null, max = 120): string {
   line-height: 1.45;
 }
 
+.overall-bar-row {
+  display: flex;
+  align-items: center;
+  gap: 0.4rem;
+  font-size: 0.72rem;
+  margin-top: 0.1rem;
+}
+.overall-bar-track {
+  flex: 1;
+  height: 6px;
+  background: var(--color-border);
+  border-radius: 999px;
+  overflow: hidden;
+}
+.overall-bar-fill {
+  height: 100%;
+  border-radius: 999px;
+  background: var(--color-primary);
+  transition: width 0.3s ease;
+}
+.overall-bar-pct {
+  color: var(--color-text-secondary);
+  flex-shrink: 0;
+  min-width: 2.5rem;
+  text-align: right;
+  font-weight: 600;
+}
+
 .milestone-bars {
   display: flex;
   flex-direction: column;

frontend/src/views/ProjectView.vue

@@ -118,6 +118,14 @@ function toggleMilestoneCollapse(id: number) {
   }
 }
 
+function autoCollapseCompleted(msList: Milestone[]) {
+  for (const ms of msList) {
+    if (ms.total > 0 && ms.completed === ms.total) {
+      collapsedMilestones.value.add(ms.id);
+    }
+  }
+}
+
 async function loadProject() {
   loading.value = true;
   error.value = null;
@@ -130,6 +138,7 @@ async function loadProject() {
     editStatus.value = data.status;
     editDirty.value = false;
     milestones.value = data.summary?.milestone_summary ?? [];
+    autoCollapseCompleted(milestones.value);
   } catch {
     error.value = "Failed to load project.";
   } finally {
@@ -143,6 +152,7 @@ async function loadMilestones() {
       `/api/projects/${projectId.value}/milestones`
     );
     milestones.value = data.milestones;
+    autoCollapseCompleted(milestones.value);
   } catch {
     // silent
   }