home: split cases table by appeal type + add appeal-type chart

Backend (cases listing)
- /api/cases: also return updated_at, created_at, practice_area,
  appeal_subtype, subject. The detail-mode response was previously
  dropping these even though db.list_cases reads them, leaving the
  UI's "תחום" and "עודכן" columns blank.

Frontend
- Split the home table into two: רישוי (1xxx) and היטל השבחה ופיצויים
  (8xxx + 9xxx), bucketing on appeal_subtype with a case-number-prefix
  fallback. The "תחום" column is now redundant and removed.
- New AppealTypeBars chart in the right rail next to the existing
  status donut.
- Donut: switch to a vertical layout (donut on top, legend below in a
  3-col grid) so labels like "חדש / בעיבוד" no longer wrap inside the
  320px sidebar; counts now align in a tabular column.
- CasesTable accepts emptyText/searchPlaceholder so each split table
  has its own copy.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

web/app.py

@@ -1080,6 +1080,9 @@ async def list_cases(
                 "title": c["title"],
                 "status": c["status"],
                 "archived_at": c["archived_at"].isoformat() if c.get("archived_at") else None,
+                "updated_at": c["updated_at"].isoformat() if c.get("updated_at") else None,
+                "practice_area": c.get("practice_area"),
+                "appeal_subtype": c.get("appeal_subtype"),
             }
             for c in cases
         ]
@@ -1100,10 +1103,15 @@ async def list_cases(
                 "case_number": c["case_number"],
                 "title": c["title"],
                 "status": c["status"],
+                "subject": c.get("subject", "") or "",
                 "expected_outcome": c.get("expected_outcome", ""),
                 "committee_type": c.get("committee_type", ""),
                 "hearing_date": str(c["hearing_date"]) if c.get("hearing_date") else "",
                 "archived_at": c["archived_at"].isoformat() if c.get("archived_at") else None,
+                "created_at": c["created_at"].isoformat() if c.get("created_at") else None,
+                "updated_at": c["updated_at"].isoformat() if c.get("updated_at") else None,
+                "practice_area": c.get("practice_area"),
+                "appeal_subtype": c.get("appeal_subtype"),
                 "document_count": doc_count,
                 "processing_count": processing_count,
                 "gitea_url": f"https://gitea.nautilus.marcusgroup.org/cases/{c['case_number']}",