chore: Bump version to 0.26.0

Release highlights:
- bd doctor --check-health for lightweight startup hook health checks
- --no-git-history flag to prevent spurious deletions
- gh2jsonl --id-mode hash for content-based ID generation
- Critical MCP protocol stdin fix (PR #400)
- Git worktree staleness fix (#399)
- Multi-part prefix support (#398)
- bd sync commit scope fix

Updated all component versions:
- bd CLI: 0.25.1 -> 0.26.0
- Plugin: 0.25.1 -> 0.26.0
- MCP server: 0.25.1 -> 0.26.0
- npm package: 0.25.1 -> 0.26.0

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 = "0.25.1"
+version = "0.26.0"
 description = "MCP server for beads issue tracker."
 readme = "README.md"
 requires-python = ">=3.10"

integrations/beads-mcp/src/beads_mcp/__init__.py

@@ -4,4 +4,4 @@ This package provides an MCP (Model Context Protocol) server that exposes
 beads (bd) issue tracker functionality to MCP Clients.
 """
 
-__version__ = "0.25.1"
+__version__ = "0.26.0"