fix(ci): use absolute paths in package build step

Relative path ../../build/package/ broke when cd'd 3 levels deep into
src/packages/ext_name/. Now captures REPO_ROOT=$(pwd) and uses it
for zip output and cd back.

Authored-by: Moko Consulting
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.mokogitea/workflows/pre-release.yml

@@ -177,6 +177,8 @@ jobs:
 
           mkdir -p build/package
 
+          REPO_ROOT=$(pwd)
+
           if [ "$EXT_TYPE" = "package" ] && [ -d "${SOURCE_DIR}/packages" ]; then
             echo "=== Building Joomla PACKAGE (multi-extension) ==="
             for ext_dir in "${SOURCE_DIR}"/packages/*/; do
@@ -184,8 +186,8 @@ jobs:
               EXT_NAME=$(basename "$ext_dir")
               echo "  Packaging sub-extension: ${EXT_NAME}"
               cd "$ext_dir"
-              zip -r "../../build/package/${EXT_NAME}.zip" . -x $EXCLUDES
-              cd "$OLDPWD"
+              zip -r "${REPO_ROOT}/build/package/${EXT_NAME}.zip" . -x $EXCLUDES
+              cd "${REPO_ROOT}"
             done
             for f in "${SOURCE_DIR}"/*.xml "${SOURCE_DIR}"/*.php; do
               [ -f "$f" ] && cp "$f" build/package/

CHANGELOG.md

@@ -44,6 +44,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 - CI: auto-release uses stream tag `stable` instead of version tag `vXX`
+- CI: pre-release package build uses absolute paths (fixes relative path zip error)
 
 ## [02.05.00] - 2026-05-24