chore: add edit_secrets helper for sops

edit_secrets

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+# Edit (or view) a sops-encrypted secrets file with the admin age key.
+#
+# Usage:
+#   ./edit_secrets                      # edit secrets/jupiter.yaml
+#   ./edit_secrets secrets/other.yaml   # edit another file
+#   ./edit_secrets --show               # decrypt to stdout, no edit
+#
+# The admin age PRIVATE key must be at $SOPS_AGE_KEY_FILE
+# (default ~/.config/sops/age/keys.txt). Never commit that key.
+set -euo pipefail
+
+REPO="$(cd "$(dirname "$0")" && pwd)"
+cd "$REPO"
+
+export SOPS_AGE_KEY_FILE="${SOPS_AGE_KEY_FILE:-$HOME/.config/sops/age/keys.txt}"
+if [ ! -f "$SOPS_AGE_KEY_FILE" ]; then
+  echo "error: admin age key not found at $SOPS_AGE_KEY_FILE" >&2
+  echo "set SOPS_AGE_KEY_FILE or generate one with age-keygen." >&2
+  exit 1
+fi
+
+show=0
+file="secrets/jupiter.yaml"
+for arg in "$@"; do
+  case "$arg" in
+    --show) show=1 ;;
+    *) file="$arg" ;;
+  esac
+done
+
+if [ "$show" -eq 1 ]; then
+  exec nix shell nixpkgs#sops -c sops --decrypt "$file"
+else
+  exec nix shell nixpkgs#sops -c sops "$file"
+fi