Add per-workstream task counts to state summary and dashboard

API:
- WorkstreamWithTaskCounts schema extends WorkstreamRead with
  tasks_total/todo/in_progress/blocked/done fields
- /state/summary now includes these counts in open_workstreams via
  a single extra GROUP BY query (workstream_id, status)

Dashboard:
- Replace domain workstream-count bar with a horizontal stacked
  progress bar per workstream (done/in-progress/blocked/todo)
- Workstreams with no tasks show "no tasks yet" annotation
- Workstreams with tasks show "X/N done" label after the bar
- Sorted by domain then title so domains group naturally

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

api/routers/state.py

@@ -23,7 +23,7 @@ from api.schemas.state import (
 )
 from api.schemas.task import TaskRead
 from api.schemas.topic import TopicWithWorkstreams
-from api.schemas.workstream import WorkstreamRead
+from api.schemas.workstream import WorkstreamRead, WorkstreamWithTaskCounts
 
 router = APIRouter(prefix="/state", tags=["state"])
 
@@ -63,6 +63,13 @@ async def get_summary(session: AsyncSession = Depends(get_session)) -> StateSumm
     )
     open_ws = list(open_ws_rows.scalars().all())
 
+    # Task counts per workstream (used to enrich open_workstreams)
+    task_per_ws: dict = {}
+    for ws_id, tstat, cnt in await session.execute(
+        select(Task.workstream_id, Task.status, func.count()).group_by(Task.workstream_id, Task.status)
+    ):
+        task_per_ws.setdefault(ws_id, {})[tstat] = cnt
+
     # Totals — one GROUP BY per table
     topic_counts = {r[0]: r[1] for r in await session.execute(
         select(Topic.status, func.count()).group_by(Topic.status)
@@ -115,7 +122,17 @@ async def get_summary(session: AsyncSession = Depends(get_session)) -> StateSumm
         blocking_decisions=[DecisionRead.model_validate(d) for d in blocking],
         blocked_tasks=[TaskRead.model_validate(t) for t in blocked],
         recent_progress=[ProgressEventRead.model_validate(e) for e in recent],
-        open_workstreams=[WorkstreamRead.model_validate(w) for w in open_ws],
+        open_workstreams=[
+            WorkstreamWithTaskCounts(
+                **WorkstreamRead.model_validate(w).model_dump(),
+                tasks_total=sum(task_per_ws.get(w.id, {}).values()),
+                tasks_todo=task_per_ws.get(w.id, {}).get(TaskStatus.todo, 0),
+                tasks_in_progress=task_per_ws.get(w.id, {}).get(TaskStatus.in_progress, 0),
+                tasks_blocked=task_per_ws.get(w.id, {}).get(TaskStatus.blocked, 0),
+                tasks_done=task_per_ws.get(w.id, {}).get(TaskStatus.done, 0),
+            )
+            for w in open_ws
+        ],
     )
 
 

api/schemas/state.py

@@ -6,7 +6,7 @@ from api.schemas.decision import DecisionRead
 from api.schemas.progress_event import ProgressEventRead
 from api.schemas.task import TaskRead
 from api.schemas.topic import TopicWithWorkstreams
-from api.schemas.workstream import WorkstreamRead
+from api.schemas.workstream import WorkstreamWithTaskCounts
 
 
 class TopicTotals(BaseModel):
@@ -55,4 +55,4 @@ class StateSummary(BaseModel):
     blocking_decisions: list[DecisionRead]
     blocked_tasks: list[TaskRead]
     recent_progress: list[ProgressEventRead]
-    open_workstreams: list[WorkstreamRead]
+    open_workstreams: list[WorkstreamWithTaskCounts]

api/schemas/workstream.py

@@ -36,3 +36,11 @@ class WorkstreamRead(BaseModel):
     due_date: date | None = None
     created_at: datetime
     updated_at: datetime
+
+
+class WorkstreamWithTaskCounts(WorkstreamRead):
+    tasks_total: int = 0
+    tasks_todo: int = 0
+    tasks_in_progress: int = 0
+    tasks_blocked: int = 0
+    tasks_done: int = 0