refactor(scripts): standardize scripts and improve readability

- Removed unnecessary comments and adjusted formatting for clarity
- Translated German comments, logs, and error messages to English
- Improved consistency in variable naming and messages across scripts
- Enhanced error handling and output for better user feedback

scripts/install-git-cliff.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
-# install-git-cliff.sh – holt neueste oder gewünschte git-cliff-Binary (x86_64)
-# Usage: sudo ./install-git-cliff.sh        # neueste Version
-#        sudo ./install-git-cliff.sh 2.9.0  # bestimmte Version
+# install-git-cliff.sh – fetches the latest or specified git-cliff binary (x86_64)
+# Usage: sudo ./install-git-cliff.sh        # latest version
+#        sudo ./install-git-cliff.sh 2.9.0  # specific version
 set -euo pipefail
 
 REPO="orhun/git-cliff"
@@ -9,42 +9,42 @@ ARCH_OS="x86_64-unknown-linux-gnu"
 INSTALL_DIR="/usr/local/bin"
 VERSION="${1:-latest}"
 
-need() { command -v "$1" >/dev/null || { echo "$1 fehlt"; exit 1; }; }
+need() { command -v "$1" >/dev/null || { echo "$1 is missing"; exit 1; }; }
 need curl; need tar; need grep; need sed; need awk
 
-# 1 Version ermitteln → Release-JSON abrufen
+# 1 Determine version → Fetch release JSON
 if [[ "$VERSION" == "latest" ]]; then
   API_URL="https://api.github.com/repos/${REPO}/releases/latest"
 else
   API_URL="https://api.github.com/repos/${REPO}/releases/tags/v${VERSION}"
 fi
 
-echo "🔍 Hole Release-Info ($API_URL)…"
+echo "🔍 Fetching release info ($API_URL)…"
 JSON=$(curl -sL "$API_URL")
 
-VERSION=$(echo "$JSON" | grep -m1 '"tag_name":' | sed -E 's/.*"v?([^"]+)".*/\1/')
+VERSION=$(echo "$JSON" | grep -m1 '"tag_name":' | sed -E 's/.*"v?([^\"]+)".*/\1/')
 ASSET_URL=$(echo "$JSON" |
   grep -Eo '"browser_download_url": *"[^"]+' |
   cut -d'"' -f4 |
-  grep "${ARCH_OS}\\.tar" | head -n1)
+  grep "${ARCH_OS}\.tar" | head -n1)
 
-[[ -z "$ASSET_URL" ]] && { echo "❌ passender Asset nicht gefunden"; exit 1; }
+[[ -z "$ASSET_URL" ]] && { echo "❌ Matching asset not found"; exit 1; }
 
 ASSET_FILE=$(basename "$ASSET_URL")
-echo "📦 Lade git-cliff v${VERSION} (${ASSET_FILE}) …"
+echo "📦 Downloading git-cliff v${VERSION} (${ASSET_FILE}) …"
 TMP=$(mktemp -d)
 curl -#L -o "${TMP}/${ASSET_FILE}" "$ASSET_URL"
 
-# 2 Entpacken je nach Endung
+# 2 Extract based on file extension
 case "$ASSET_FILE" in
   *.tar.gz|*.tgz) tar -C "$TMP" -xzf "${TMP}/${ASSET_FILE}" ;;
   *.tar.xz)       tar -C "$TMP" -xJf "${TMP}/${ASSET_FILE}" ;;
   *.zip)          need unzip; unzip -q "${TMP}/${ASSET_FILE}" -d "$TMP" ;;
-  *) echo "❌ Unbekanntes Archivformat: $ASSET_FILE"; exit 1 ;;
+  *) echo "❌ Unknown archive format: $ASSET_FILE"; exit 1 ;;
 esac
 
 BIN_PATH=$(find "$TMP" -type f -name git-cliff -perm -u+x | head -n1)
-[[ -z "$BIN_PATH" ]] && { echo "❌ Binary nicht gefunden"; exit 1; }
+[[ -z "$BIN_PATH" ]] && { echo "❌ Binary not found"; exit 1; }
 
 sudo install -m755 "$BIN_PATH" "${INSTALL_DIR}/git-cliff"
-echo "✅ git-cliff $(git-cliff --version) installiert unter ${INSTALL_DIR}"
+echo "✅ git-cliff $(git-cliff --version) installed in ${INSTALL_DIR}"