feat(m9): graphical first-run setup wizard — 0.26.0

The full installer experience as a GUI wizard (gui/setup_wizard.py): environment
summary → pick dependency bundles (from the catalog, grouped) → install missing
apt packages → choose recording trigger → readiness summary.

- Shown on first launch (config setup_done) and via `rigdoctor-gui --setup`;
  re-runnable from Settings → Run setup wizard.
- install.sh launches it after a fresh install when a desktop session is present.
- catalog.by_bundle() groups components; config gains setup_done.
- Tests: by_bundle grouping + wizard construction smoke.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

install.sh

@@ -115,3 +115,11 @@ case ":$PATH:" in
     *":$BIN_DIR:"*) ;;
     *) echo "  Note: add $BIN_DIR to your PATH (a fresh login usually does this).";;
 esac
+
+# Launch the graphical setup wizard if a desktop session is available (first run shows it).
+if [ -n "${DISPLAY:-}${WAYLAND_DISPLAY:-}" ] && [ -x "$VENV/bin/rigdoctor-gui" ]; then
+    echo "  Opening the setup wizard…"
+    ("$VENV/bin/rigdoctor-gui" --setup >/dev/null 2>&1 &)
+else
+    echo "  Run 'rigdoctor-gui' to finish setup."
+fi