GEMINI_CLI_HOME pointed to a tmpdir which broke OAuth auth since the CLI
couldn't find credentials in the real home directory.
Instead, inject Paperclip skills directly into ~/.gemini/skills/ (matching
the pattern used by cursor, codex, pi, and opencode adapters). This lets
the Gemini CLI find both auth credentials and skills in their natural
location without any GEMINI_CLI_HOME override.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>