fix: Convert ssh keys to age keys

secrets/update-age-keys.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+# ============================================================================
+# Update Age Keys from SSH Public Keys
+# ============================================================================
+# This script converts SSH public keys to age format for use with ragenix.
+# Run this after adding new SSH .pub files to create corresponding .age.pub files.
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+echo "Converting SSH public keys to age format..."
+
+# Find all .pub files that are SSH keys (not already .age.pub)
+find . -name "*.pub" -not -name "*.age.pub" -type f | while read -r pubkey; do
+    # Check if it's an SSH key
+    if grep -q "^ssh-" "$pubkey" 2>/dev/null || grep -q "^ecdsa-" "$pubkey" 2>/dev/null; then
+        age_key=$(nix shell nixpkgs#ssh-to-age -c ssh-to-age < "$pubkey" 2>/dev/null || true)
+        
+        if [ -n "$age_key" ]; then
+            # Create .age.pub file with the age key
+            age_file="${pubkey%.pub}.age.pub"
+            echo "$age_key" > "$age_file"
+            echo "✓ Converted: $pubkey -> $age_file"
+        else
+            echo "⚠ Skipped: $pubkey (conversion failed)"
+        fi
+    fi
+done
+
+echo ""
+echo "Done! Age public keys have been generated."
+echo "You can now use ragenix to manage secrets:"
+echo "  ragenix -e secrets/global/my-secret.age"
+echo "  ragenix -r  # Re-key all secrets with updated keys"