Add vim-yubisigner wrapper and installation instructions

- Add scripts/vim-yubisigner (editor wrapper for YubiKey signing)
- Update README with complete installation steps for yubisigner-cli
- Include code blocks for building and installing wrapper

1 files changed, 65 insertions, 0 deletions

diff --git a/scripts/vim-yubisigner b/scripts/vim-yubisigner
new file mode 100755
index 0000000..45d1c3d
--- /dev/null
+++ b/scripts/vim-yubisigner
@@ -0,0 +1,65 @@
+#!/bin/bash
+# Vim wrapper that auto-signs with yubisigner-cli after editing
+# Used by NeoMutt mail2news account
+# Creates PGP-like clearsign format with yubisigner signature
+
+set -euo pipefail
+
+# First argument is the file to edit
+FILE="$1"
+
+# Open vim for editing
+vim "$FILE"
+
+# Save original message
+ORIGINAL_MSG=$(cat "$FILE")
+
+# After vim exits, sign the message
+echo ""
+echo "Signing message with YubiKey..."
+
+# Kill gpg-agent to release YubiKey (it will auto-restart later)
+echo "Releasing YubiKey from gpg-agent..."
+gpgconf --kill gpg-agent 2>/dev/null || true
+sleep 1
+
+# Sign with yubisigner-cli (PIN will be prompted)
+if ! "$HOME/bin/yubisigner-cli/yubisigner-cli" \
+  --input "$FILE" \
+  --author "Gab Virebent" \
+  --email "gabriel1@virebent.art" \
+  --url "https://contact.virebent.art" \
+  --comment "Posted via NeoMutt mail2news"; then
+  echo ""
+  echo "ERROR: yubisigner-cli failed!"
+  echo "Press ENTER to continue WITHOUT signature..."
+  read
+  exit 0
+fi
+
+# Check if signature was created
+if [ ! -f "$FILE.sig" ]; then
+  echo ""
+  echo "ERROR: Signature file not created!"
+  echo "Press ENTER to continue WITHOUT signature..."
+  read
+  exit 0
+fi
+
+# Create clearsign format (like PGP clearsign but with yubisigner signature)
+{
+  echo "-----BEGIN YUBISIGNER SIGNED MESSAGE-----"
+  echo "Hash: SHA256"
+  echo ""
+  echo "$ORIGINAL_MSG"
+  echo ""
+  cat "$FILE.sig"
+} > "$FILE.tmp"
+
+# Replace original file with clearsign version
+mv "$FILE.tmp" "$FILE"
+
+# Cleanup
+rm -f "$FILE.sig"
+
+echo "Message signed successfully"