feat(halacha): review-queue triage — defer + batch group actions + quality-flag badges (#84)

Make the chair's pending-halacha review faster and less exhausting.

Backend:
- New 'deferred' review_status (snooze): stays out of the active library AND
  out of the default pending queue, without the finality of 'rejected'.
  update_halacha stamps reviewer+reviewed_at on defer; HALACHA_REVIEW_STATUSES
  is the single source of valid statuses (PATCH validation now uses it).
- db.update_halachot_batch(ids, status, reviewer) — one atomic UPDATE for a
  whole group; invalid status / empty ids are a no-op.
- POST /api/halachot/batch (HalachaBatchReviewRequest) wraps it.
- update_halacha now RETURNs quality_flags too (parity with list_halachot).

Frontend (halacha-review-panel):
- Quality-flag badges (#81: non_decision / truncated_quote / thin_restatement /
  quote_unverified) so the chair sees WHY an item was held back.
- Defer action — button + keyboard 'D' — to snooze without rejecting (fixes the
  'leave in pending forever' anti-pattern; reject stays the junk verb).
- Per-precedent batch bar: 'אשר הכל' / 'דחה הכל' via useBatchReviewHalachot
  (one request, one refetch) with confirm guards.
- Halacha/HalachaPatch types gain quality_flags + 'deferred'.

Verified: mcp-server suite 156 passed; web build green; end-to-end integration
against dev DB (batch approve/reject, defer sets status+timestamp, pending
excludes approved+deferred, deferred queryable, invalid status no-op).

Note: api:types regen deferred until deploy (the batch hook is hand-typed, not
dependent on generated types).

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

web/app.py

@@ -5177,6 +5177,13 @@ class HalachaUpdateRequest(BaseModel):
     practice_areas: list[str] | None = None
 
 
+class HalachaBatchReviewRequest(BaseModel):
+    """#84 — apply one review status to many halachot at once (group action)."""
+    halacha_ids: list[str]
+    review_status: str
+    reviewer: str | None = "דפנה"
+
+
 @app.post("/api/precedent-library/upload")
 async def precedent_library_upload(
     file: UploadFile = File(...),
@@ -5712,9 +5719,7 @@ async def halacha_update(halacha_id: str, req: HalachaUpdateRequest):
         hid = UUID(halacha_id)
     except ValueError:
         raise HTTPException(400, "halacha_id לא תקין")
-    if req.review_status and req.review_status not in {
-        "pending_review", "approved", "rejected", "published",
-    }:
+    if req.review_status and req.review_status not in db.HALACHA_REVIEW_STATUSES:
         raise HTTPException(400, "review_status לא תקין")
     row = await db.update_halacha(
         halacha_id=hid,
@@ -5730,6 +5735,23 @@ async def halacha_update(halacha_id: str, req: HalachaUpdateRequest):
     return row
 
 
+@app.post("/api/halachot/batch")
+async def halacha_batch_review(req: HalachaBatchReviewRequest):
+    """Apply one review status to many halachot at once (#84 group action)."""
+    if req.review_status not in db.HALACHA_REVIEW_STATUSES:
+        raise HTTPException(400, "review_status לא תקין")
+    if not req.halacha_ids:
+        return {"updated": 0}
+    try:
+        ids = [str(UUID(i)) for i in req.halacha_ids]
+    except ValueError:
+        raise HTTPException(400, "halacha_id לא תקין ברשימה")
+    updated = await db.update_halachot_batch(
+        ids, review_status=req.review_status, reviewer=req.reviewer or "",
+    )
+    return {"updated": updated}
+
+
 # ── Missing Precedents (TaskMaster #35) ────────────────────────────
 # Track citations from party briefs that aren't yet in the precedent
 # corpus. Researcher logs gaps; chair closes them by uploading the