fix: CI verify command and prealloc lint issues

feat: add GoReleaser, CI, and release workflows

fix: add prefix matching to link/unlink and fix comma splitting in fields

chore: add .gitignore

feat: add Claude Code skill installation

feat: add integration tests for both storage backends

feat: add markdown storage backend with full CRUD

feat: add MCP server with 12 tools, resources, and prompts

feat: add company and relationship CLI commands

feat: add contact CLI commands (add/list/show/edit/rm)

feat: add config-driven storage initialization to root command

feat: add XDG config with backend factory

feat: add SQLite company, relationship, and search CRUD

feat: add SQLite contact CRUD with FTS5 search

feat: add SQLite store with schema, FTS5, and triggers