diff

Step 0 — theme + renderer preference (run first, every invocation)

When PREF is empty below, you MUST prompt the user for theme + renderer via AskUserQuestion BEFORE writing the preference file — theme options: notion (warm cream + Notion Blue), linear (dark-native + indigo), vercel (gallery white + Geist), stripe (weight-300 luxury + deep navy), supabase (dark-native + emerald), apple (SF + Apple Blue + true-black dark), tailwind (Inter + slate + indigo-600); renderer options: auto / canvas / page. Use the answer to set THEME and RENDERER. If the user skips or the tool is unavailable, fall back silently to notion + auto. Color mode is not a setting — every output inlines both light and dark; the toggle button + prefers-color-scheme switch them at view time.

PREF=""
for p in ./.artifact-organizer/preference.md ~/.artifact-organizer/preference.md; do
  [ -f "$p" ] && { PREF="$p"; break; }
done

if [ -z "$PREF" ]; then
  # See the instruction above — populate from AskUserQuestion or fall back.
  THEME=notion; RENDERER=auto
  mkdir -p ~/.artifact-organizer; PREF=~/.artifact-organizer/preference.md
  printf -- '---\ntheme: %s\nrenderer: %s\ncreated_at: %s\n---\n' \
    "$THEME" "$RENDERER" "$(date -u +%Y-%m-%dT%H:%M:%SZ)" > "$PREF"
fi

THEME=$(awk    -F': *' '/^theme:/{print $2; exit}'    "$PREF")
RENDERER=$(awk -F': *' '/^renderer:/{print $2; exit}' "$PREF")
[ -z "$THEME" ]    && THEME=notion
[ -z "$RENDERER" ] && RENDERER=auto

You are invoking Artifact Organizer's diff review. The user's input:

$ARGUMENTS

Source detection

1. Git range (like main..HEAD, HEAD~5..HEAD, or abc123..def456) — run git diff <range> to get the unified diff.
2. PR URL (e.g. https://github.com/owner/repo/pull/123) — use gh pr diff 123 -R owner/repo or gh api repos/owner/repo/pulls/123.diff.
3. No args or "diff" — assume the user will paste or already has the diff in context. Ask if unclear.

Envelope structure