Add [tanin] repo build script; build 5 own packages + DB

- packaging/build-tanin-repo.sh: builds own pkgs + repo-add DB (-> ~/projects/tanin-repo)
- built: tanin-greet, tanin-libadwaita, tanin-setup, tanin-eww, tanin-desktop
- manifest: cliphist + cage are in extra (not AUR rebuilds); only eww/tiramisu/
  waypaper need rebuilding into [tanin]; record repo-build status

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

packaging/build-tanin-repo.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+# Build the [tanin] binary repo from our own packages.
+#   ./build-tanin-repo.sh            # build what's possible, refresh the DB
+#   TANIN_REPO_DIR=/path ./...       # output elsewhere (default ~/projects/tanin-repo)
+#
+# Coverage:
+#   - own simple packages (file installs / metapackage): built here, no sudo.
+#   - taninux: needs python-build/installer/hatchling -> built only if present.
+#   - AUR rebuilds (eww, tiramisu, waypaper): NOT in official repos; build them
+#     separately (paru/makepkg) and drop the .pkg.tar.zst into the repo dir.
+#     (cliphist + cage are in extra -> no rebuild needed.)
+set -uo pipefail
+HERE="$(cd "$(dirname "$0")" && pwd)"
+OUT="${TANIN_REPO_DIR:-$HOME/projects/tanin-repo}"
+DB="$OUT/tanin.db.tar.zst"
+mkdir -p "$OUT"
+
+OWN_SIMPLE=(tanin-greet tanin-libadwaita tanin-setup tanin-eww tanin-desktop)
+OWN_BUILD=(taninux)
+AUR_REBUILD=(eww tiramisu waypaper)
+
+build() {
+  local p="$1"
+  echo "==> building $p"
+  ( cd "$HERE/$p" && makepkg -d -f --noconfirm >/dev/null 2>&1 ) \
+    && cp "$HERE/$p/"*.pkg.tar.zst "$OUT/" 2>/dev/null \
+    && echo "   ok" || { echo "   FAILED ($p)"; return 1; }
+}
+
+for p in "${OWN_SIMPLE[@]}"; do build "$p"; done
+
+for p in "${OWN_BUILD[@]}"; do
+  if pacman -Q python-build python-installer python-hatchling >/dev/null 2>&1; then
+    build "$p"
+  else
+    echo "** skip $p — needs: sudo pacman -S python-build python-installer python-hatchling"
+  fi
+done
+
+echo "** AUR rebuilds TODO (not in official repos): ${AUR_REBUILD[*]}"
+echo "   build each with paru/makepkg and copy the .pkg.tar.zst into $OUT, then re-run."
+
+# refresh the DB (unsigned for now -> pacman.conf: SigLevel = Optional TrustAll)
+shopt -s nullglob
+pkgs=("$OUT"/*.pkg.tar.zst)
+if (( ${#pkgs[@]} )); then
+  ( cd "$OUT" && repo-add -q "$DB" ./*.pkg.tar.zst >/dev/null 2>&1 )
+  echo "== [tanin] repo refreshed at $OUT =="
+  ls -1 "$OUT" | grep -E '\.pkg\.tar\.zst$|tanin\.db'
+else
+  echo "no packages built yet."
+fi