Instead of symlinking ~/.copilot/hooks/agent-support.json to dotfiles
hooks.json (which uses relative paths resolved from workspace root),
generate the file at install time with absolute paths to dotfiles hooks.
This means projects no longer need per-project hook stubs or symlinks.
A project only needs .agents/hooks/post-tool-use-remnant.sh (or similar)
for its own overlay, wired as a second PostToolUse in .github/hooks/.
The MCP server requires @modelcontextprotocol/sdk and zod which are not
globally installed. Added .agents/mcp/package.json and updated install.sh
to run 'npm install --prefix' on first setup.