Merge pull request #10 from amplitude/kelsonpw-cc/stoic-einstein

Link $ARGUMENTS to Claude Code docs in README

Update README to reflect $ARGUMENTS replacing {{PLACEHOLDERS}}

Revert "Add craft-spec demo screenshot"

Add craft-spec demo screenshot

Restore ask instructions with original placeholder context

Restore product-diagnosis SKILL.md line endings

Replace {{PLACEHOLDERS}} with $ARGUMENTS directly in context blocks

Remove $ARGUMENTS from self-contained skills

Add --scope project note to install docs

Add $ARGUMENTS support to all skills for hybrid input

Restore placeholder instructions in README prompt template option

Use Claude plugin marketplace for proper installation

Restore plugin.json files to original content

Add install.sh, plugin.json metadata, and cleaner install docs