fix: Shorten tool name exceeding 64 char limit

- Renamed outline_bulk_remove_users_from_collection (41 chars)
  to outline_bulk_remove_collection_users (38 chars)
- With MCP prefix (24 chars), total was 65 > 64 limit
- Bumped version to 1.3.7
- Updated all version references in source files

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

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.3.7] - 2026-01-31
+
+### Fixed
+
+- **Tool Name Length:** Shortened `outline_bulk_remove_users_from_collection` to `outline_bulk_remove_collection_users`
+  - MCP tool names with prefix `mcp__outline-postgresql__` were exceeding 64 character limit
+  - Claude API returns error 400 for tool names > 64 chars
+
 ## [1.3.6] - 2026-01-31
 
 ### Fixed