chore: changeset for unified MCP layer

[TimCrooker]

Adds the missing changeset for the unified MCP layer (#9), which merged without one.

• @timothycrooker/ai-context-core: minor (new MCP primitive)
• @timothycrooker/ai-context-cli: minor (ai-context mcp commands)
• @timothycrooker/ai-context-templates: patch (MCP docs in meta-skill + README)

Merging this updates the changesets "Version Packages" PR; merging that publishes the new versions so consumers (e.g. list-forge) can adopt the MCP layer.

🤖 Generated with Claude Code

Note

Add changeset for unified MCP layer with new CLI commands and adapters

• Declares minor version bumps for @timothycrooker/ai-context-core and @timothycrooker/ai-context-cli, and a patch bump for @timothycrooker/ai-context-templates
• Introduces a unified MCP layer with centralized MCP server declaration and fan-out during build
• Adds secrets handling via env var references and new CLI commands: mcp list, mcp install --user, and mcp setup
• Adds initial adapters for Claude and Codex

^{Macroscope summarized c2e670c.}

[macroscopeapp]

Approvability

Verdict: Needs human review

Unable to check for correctness in c2e670c.

^{You can customize Macroscope's approvability policy. Learn more.}