fix(case-page): resolve full-page review findings (bugs + RTL + resilience)

Full code review of the case-detail page (14 components) surfaced these,
all fixed here:

Logic bugs
- case-edit-dialog: form.reset ran on the 5s useCase refetch while the dialog
  was open, clobbering in-progress edits. Now resets only on open→true.
- status-changer: `selected` never synced to async/external `currentStatus`
  (stale dropdown). Reworked to track currentStatus until an explicit pick;
  resets to tracking after save.
- decision-blocks-panel: `block.content`/`word_count` accessed without null
  guards (endpoint has no response model) → potential render crash. Coerced
  with `?? ""` / `?? 0`. `STATUS_LABELS[status]` now falls back to the raw
  status instead of rendering literal "undefined".
- document-type-editor: `await mutateAsync()` in async click handlers without
  try/catch → unhandled promise rejection. Wrapped (errors still surface via
  isError).

Resilience / hygiene
- page.tsx: a transient 5xx on the background poll flipped the WHOLE page to
  the error card and discarded loaded data. Now gated on `!data`, plus a
  "נסה שוב" retry.
- cases.ts useUpdateCase: invalidated casesKeys.all, which re-invalidated the
  detail it had just optimistically patched. Scoped to the list prefix.

RTL correctness (logical properties)
- agent-status-widget `mr-auto`→`ms-auto`; agent-activity-feed `mr-auto`→
  `me-auto`, icon `ml-1/ml-2`→`me-1/me-2`, required `*` `mr-1`→`ms-1`;
  document-type-editor list `pr-4`→`ps-4`.

Minors
- drafts-panel: `<a href>`→`next/link` (operations + citation links) for SPA
  nav. agent-activity-feed: issueMap memoized; comment Textarea aria-label.
  upload-sheet: `unknown` status no longer shown as green success (neutral
  icon + "רענן לאישור"). citations.ts: case_name typed `string | null`.

Design gate: visual-touching items (RTL gap side, retry button, neutral
upload icon) were chair-authorized via the reviewed-findings approval ("fix
all"); none alter an approved page layout — they are correctness fixes.
tsc clean; eslint clean (1 pre-existing form.watch warning, untouched line).

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

web-ui/src/lib/api/cases.ts

@@ -176,14 +176,16 @@ export function useUpdateCase(caseNumber: string | undefined) {
         body: input,
       }),
     onSuccess: (data) => {
-      /* Patch cached detail and nudge the list to refetch on next focus */
+      /* Patch cached detail, then invalidate only the LIST queries — not
+       * casesKeys.all, which would also invalidate the detail we just patched
+       * and throw away the optimistic merge. */
       if (caseNumber) {
         qc.setQueryData<CaseDetail | undefined>(
           casesKeys.detail(caseNumber),
           (prev) => (prev ? { ...prev, ...data } : prev),
         );
       }
-      qc.invalidateQueries({ queryKey: casesKeys.all });
+      qc.invalidateQueries({ queryKey: [...casesKeys.all, "list"] });
     },
   });
 }