Initial commit — TANINUX (camel): management app + distro packaging

- app: GTK System Settings (tsettings) + Software Hub (thub) + TUI
- distro/: camel.toml manifest + MANIFEST.md (Arch + [tanin] repo model)
- packaging/: taninux, tanin-desktop (niri metapackage), tanin-greet,
  tanin-libadwaita, tanin-setup
- docs/, data/, LICENSE (GPL-3.0-or-later)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

packaging/tanin-setup/tanin-setup

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+# TANINUX first-run setup: seedet Default-Configs nach ~/.config und richtet
+# das Session-Portal ein (damit libadwaita-Apps Hell/Dunkel übernehmen).
+# Idempotent. --force überschreibt bestehende Configs (mit .bak-Backup).
+set -euo pipefail
+
+SKEL="/usr/share/tanin/skel"
+UNIT="/usr/share/tanin/tanin-session.target"
+CFG="${XDG_CONFIG_HOME:-$HOME/.config}"
+FORCE=0
+[ "${1:-}" = "--force" ] && FORCE=1
+
+seed_configs() {
+  [ -d "$SKEL" ] || return 0
+  while IFS= read -r -d '' src; do
+    rel="${src#"$SKEL"/}"
+    dst="$HOME/$rel"
+    mkdir -p "$(dirname "$dst")"
+    if [ -e "$dst" ] && [ "$FORCE" -eq 0 ]; then
+      continue
+    fi
+    [ -e "$dst" ] && cp -a "$dst" "$dst.bak" 2>/dev/null || true
+    cp -a "$src" "$dst"
+  done < <(find "$SKEL" -type f -print0)
+}
+
+install_session_target() {
+  [ -f "$UNIT" ] || return 0
+  install -Dm644 "$UNIT" "$CFG/systemd/user/tanin-session.target"
+  systemctl --user daemon-reload 2>/dev/null || true
+}
+
+seed_configs
+install_session_target
+
+cat <<'EOF'
+TANINUX setup complete.
+  • configs seeded into ~/.config
+  • session target installed (~/.config/systemd/user/tanin-session.target)
+
+Make sure your compositor autostart contains:
+  exec-once = dbus-update-activation-environment --systemd --all
+  exec-once = systemctl --user start tanin-session.target
+
+(The shipped TANINUX compositor config already includes these.)
+EOF