Fix Woodpecker pipeline: pass APP_DIR env to nrfutil subshell

Environment variables aren't inherited by the nrfutil launch subshell.
Pass APP_DIR=$(pwd) on the command line so it's available in the build.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.woodpecker.yaml

@@ -3,6 +3,7 @@
 #
 # The nordicplayground/nrfconnect-sdk image requires running commands through
 # nrfutil toolchain-manager launch to have west and the toolchain available.
+# The SDK is pre-installed at /workdir in the image.
 
 when:
   - event: [push, pull_request, tag]
@@ -16,20 +17,25 @@ steps:
       - 'echo "Branch: ${CI_COMMIT_BRANCH}"'
       - 'echo "Tag: ${CI_COMMIT_TAG}"'
       - echo ""
+      # Save the current workspace path for use inside nrfutil launch
+      - export APP_DIR=$(pwd)
+      - 'echo "App directory: $APP_DIR"'
+      - echo ""
       # Run west through nrfutil toolchain-manager launch
       - 'nrfutil toolchain-manager launch /bin/bash -- -c "west --version"'
       - echo ""
-      # Build the firmware
-      - 'nrfutil toolchain-manager launch /bin/bash -- -c "cd ${CI_WORKSPACE} && west build -b nrf52840dk_nrf52840 -d build . -- -DEXTRA_CONF_FILE=prj.conf"'
+      # Build the firmware - the SDK workspace is at /workdir, our app is in current dir
+      # Pass the app directory path to the subshell explicitly
+      - 'APP_DIR=$(pwd) nrfutil toolchain-manager launch /bin/bash -- -c "cd /workdir && west build -b nrf52840dk_nrf52840 -d /tmp/build $APP_DIR -- -DEXTRA_CONF_FILE=prj.conf"'
       - echo ""
       - echo "=== Build successful ==="
       - echo ""
       - 'echo "Binary sizes:"'
-      - ls -lh ${CI_WORKSPACE}/build/zephyr/zephyr.* 2>/dev/null || true
+      - ls -lh /tmp/build/zephyr/zephyr.* 2>/dev/null || true
       # Copy artifacts to release directory
-      - mkdir -p ${CI_WORKSPACE}/release
-      - cp ${CI_WORKSPACE}/build/zephyr/zephyr.hex ${CI_WORKSPACE}/release/cleargrow-probe-${CI_COMMIT_TAG:-dev}.hex 2>/dev/null || true
-      - cp ${CI_WORKSPACE}/build/zephyr/zephyr.bin ${CI_WORKSPACE}/release/cleargrow-probe-${CI_COMMIT_TAG:-dev}.bin 2>/dev/null || true
+      - mkdir -p release
+      - cp /tmp/build/zephyr/zephyr.hex release/cleargrow-probe-${CI_COMMIT_TAG:-dev}.hex 2>/dev/null || true
+      - cp /tmp/build/zephyr/zephyr.bin release/cleargrow-probe-${CI_COMMIT_TAG:-dev}.bin 2>/dev/null || true
 
   - name: release
     image: quay.io/thegeeklab/wp-gitea-release