Phase 4a: shadcn form primitives + case inline edit

Add dialog/select/textarea/label/progress/sonner components and wire
a Toaster into Providers. New zod schemas in lib/schemas/case.ts
mirror CaseCreateRequest/CaseUpdateRequest and feed react-hook-form
validation.

CaseEditDialog on the case detail Actions tab posts PUT /api/cases/{n}
with optimistic cache patching via useUpdateCase, showing toast
feedback on success/error.

shadcn's <Form> registry entry skipped at init (missing from the
nova preset); the dialog uses RHF directly against the same Input/
Textarea/Select primitives.

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

.taskmaster/tasks/tasks.json

@@ -820,13 +820,13 @@
         "description": "Port the 3 highest-value screens. Use the frontend-design Claude Code skill to generate layout + composition, passing design tokens (navy/gold/parchment, Heebo), editorial voice, and typed API hooks. Use shadcn Card/Badge/Tabs/Sheet/ScrollArea as primitives. Port the custom donut chart into <DonutChart> component. TanStack Query staleTime:5000 for case detail replaces manual 5s polling. 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 3 of 7 in the legal-ai UI rewrite from vanilla HTML to Next.js 15 + shadcn/ui.",
         "testStrategy": "Users can browse case list, open a case detail, and view the compose screen with live data from FastAPI. All 3 screens visually match the existing legal-ai identity.",
-        "status": "in-progress",
+        "status": "done",
         "dependencies": [
           "84"
         ],
         "priority": "high",
         "subtasks": [],
-        "updatedAt": "2026-04-11T15:55:49.327Z"
+        "updatedAt": "2026-04-11T16:09:18.006Z"
       },
       {
         "id": "86",
@@ -834,12 +834,13 @@
         "description": "Port new case wizard, bulk upload, inline forms on case detail. Use react-hook-form + zod with schemas in lib/schemas/<entity>.ts. Build shared <WizardShell> from shadcn Card + Progress + Tabs. Build <DropZone> (react-dropzone + shadcn). Integrate SSE for upload progress via lib/sse.ts. 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 4 of 7 in the legal-ai UI rewrite from vanilla HTML to Next.js 15 + shadcn/ui.",
         "testStrategy": "Users can create a new case via the multi-step wizard (case appears in Gitea + Paperclip), upload documents with live SSE progress, and edit case fields inline.",
-        "status": "pending",
+        "status": "in-progress",
         "dependencies": [
           "85"
         ],
         "priority": "medium",
-        "subtasks": []
+        "subtasks": [],
+        "updatedAt": "2026-04-11T16:18:28.714Z"
       },
       {
         "id": "87",
@@ -883,9 +884,9 @@
     ],
     "metadata": {
       "version": "1.0.0",
-      "lastModified": "2026-04-11T15:55:49.330Z",
+      "lastModified": "2026-04-11T16:18:28.714Z",
       "taskCount": 58,
-      "completedCount": 51,
+      "completedCount": 52,
       "tags": [
         "master"
       ]