chore: Bump version to 0.9.3

Release highlights:
- Removed CGO dependency for better portability
- Fixed critical MCP server bugs (path resolution, init tool)
- Improved Claude Code plugin documentation
- Enhanced MCP server configuration robustness
- All 91 tests passing

Major changes since 0.9.2:
1. CGO removal - Pure Go SQLite driver for easier installation
2. MCP init fix - Tool now correctly creates .beads in current directory
3. MCP path resolution - Auto-detects bd executable via PATH
4. Plugin docs - Better quickstart for Claude Code users
5. Config validation - Command names resolved via shutil.which()

Breaking changes: None
Migration: No action needed

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

integrations/beads-mcp/pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "beads-mcp"
-version = "0.9.2"
+version = "0.9.3"
 description = "MCP server for beads issue tracker."
 readme = "README.md"
 requires-python = ">=3.11"