Patch Changes

• dea0e43: Declare @inquirer/core as a direct dependency of the CLI. It was previously imported in selectOrInput.ts but only resolvable as a transitive of @inquirer/prompts, which caused ctx7 to fail at startup with ERR_MODULE_NOT_FOUND under pnpm's isolated node linker.
• 34fda7d: Add --stdio flag to ctx7 setup to configure Context7 as a local stdio MCP server.
• 61de754: Harden skill name handling during ctx7 skills install and ctx7 skills remove. Skill names from remote SKILL.md files are now restricted to a safe character set, and the install sinks assert the target directory is a direct child of the skills root before writing.