feat(2.9.0): free-form document creation + sandboxed case folder management

- FreeDocumentGenerator: build RTL Hebrew DOCX from lightweight markdown,
  attach to case, copy to network folder.
- CaseFolderManager: writeFile / createFolder / renameItem / moveItem,
  all sandboxed to the case's own root. Physical delete is never exposed;
  markForDeletion moves the file to "<caseRoot>/מסמכים למחיקה/" with a
  "למחיקה - " prefix.
- 6 new controller actions: createDocument, writeToFolder, createFolder,
  renameItem, moveItem, markForDeletion.
- AlertCalculator: silence "X days without activity" alerts for cases
  legitimately waiting on the court (PendingDecision always; PendingHearing
  when cNextHearing is in the future).
- CaseContextBuilder: fix DocumentTemplate query — was filtering on the
  wrong column (entityType vs targetEntityType), which is why Shira's
  TEMPLATES section was always empty. Now respects isActive and surfaces
  category/description.
- Document entity: new markedForDeletionAt + markedForDeletionBy audit fields.

Pairs with shira-hermes 0.4+ which exposes the 9 matching tools to Shira.

Refs Task Master #4

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

manifest.json

@@ -3,11 +3,11 @@
     "module": "SmartAssistant",
     "description": "Unified AI Assistant for Legal CRM — floating chat with case memory, office alerts, and AI Gateway integration",
     "author": "klear",
-    "version": "2.8.2",
+    "version": "2.9.0",
     "acceptableVersions": [
         ">=8.0.0"
     ],
-    "releaseDate": "2026-05-13",
+    "releaseDate": "2026-05-14",
     "php": [
         ">=8.1"
     ]