Fix case detail: document fields, expected-outcome label, drop debug note

Three user-reported bugs on /cases/[caseNumber]:

1. Documents tab showed "9 מסמכים" in the count but rendered nothing —
   DocumentsPanel was reading filename/category/status/size_bytes/uploaded_at,
   but the real FastAPI payload (case_get → db.list_documents) returns
   title/doc_type/extraction_status/page_count/created_at. Rewrote the
   panel against the actual document row shape, added a CaseDocument
   type alias in lib/api/cases.ts, mapped doc_type to Hebrew labels
   (כתב ערר / כתב תשובה / ...) and extraction_status likewise.

2. The "פעולות" tab showed a debug-flavoured paragraph "עריכת פרטי התיק
   נשמרת מיד דרך PUT /api/cases/1033-25" — that was internal wording,
   not user copy. Removed.

3. Overview tab showed the raw enum value "full_acceptance" in the
   expected-outcome line. Mapped through the existing expectedOutcomes
   label array so it now reads "קבלה מלאה".

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.taskmaster/tasks/tasks.json

@@ -862,13 +862,13 @@
         "description": "Accessibility pass (keyboard nav, aria-label on RTL icons, focus trap in modals). Error boundaries + toast notifications for failed mutations. Loading states for every query. Cross-browser smoke test (Chrome, Firefox, Safari) + mobile device test. Document E2E smoke test script in web-ui/README.md. Plan: ~/.claude/plans/joyful-marinating-sutton.md.",
         "details": "See full plan at ~/.claude/plans/joyful-marinating-sutton.md for architecture, critical files, risks, and open questions. This task is phase 6 of 7 in the legal-ai UI rewrite from vanilla HTML to Next.js 15 + shadcn/ui.",
         "testStrategy": "Lighthouse a11y score > 90, all loading states visible, errors show toasts, README has documented smoke test steps.",
-        "status": "in-progress",
+        "status": "done",
         "dependencies": [
           "87"
         ],
         "priority": "medium",
         "subtasks": [],
-        "updatedAt": "2026-04-11T17:40:09.247Z"
+        "updatedAt": "2026-04-11T17:44:08.337Z"
       },
       {
         "id": "89",
@@ -900,9 +900,9 @@
     ],
     "metadata": {
       "version": "1.0.0",
-      "lastModified": "2026-04-11T17:40:09.248Z",
+      "lastModified": "2026-04-11T17:44:08.337Z",
       "taskCount": 59,
-      "completedCount": 55,
+      "completedCount": 56,
       "tags": [
         "master"
       ]