Improve version extraction in install-tools.sh

Replaces grep and sed with awk for extracting tool versions from the versions file, allowing for comments and blank lines between section headers and version keys. This makes the script more robust and reliable.

Author: sean-parent

scripts/install-tools.sh

@@ -14,7 +14,17 @@ get_version() {
 
     if [ -z "$section" ]; then
         # Top-level tool like [mdbook]
-        grep -A 1 "^\[$tool\]" "$VERSIONS_FILE" | grep "version" | sed 's/.*"\(.*\)".*/\1/'
+        # Use awk to handle comments/blank lines between section header and version key
+        awk -v tool="$tool" '
+            BEGIN { in_section = 0 }
+            $0 ~ ("^\\[" tool "\\]$") { in_section = 1; next }
+            in_section && /^\[/ { exit }
+            in_section && /^version[[:space:]]*=/ {
+                match($0, /"([^"]+)"/, arr)
+                print arr[1]
+                exit
+            }
+        ' "$VERSIONS_FILE"
     else
         # Plugin in a section like [mdbook-plugins]
         awk -v section="$section" -v tool="$tool" '