fix: Include creator in collaboratorIds for document listing

Documents with empty collaboratorIds don't appear in collection sidebar.
Now includes creator's userId in the array.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -2,6 +2,15 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.3.12] - 2026-01-31
+
+### Fixed
+
+- **Document Listing:** Documents now appear in collection sidebar
+  - `collaboratorIds` must contain the creator's userId, not empty array
+  - Documents with empty `collaboratorIds` don't appear in listing
+  - Now uses `ARRAY[$userId]::uuid[]` to include creator
+
 ## [1.3.11] - 2026-01-31
 
 ### Fixed