fix: firmware CI — source IDF environment and use v5.2 image

ruvnet · ruvnet · commit f1337ff1a23f · 2026-03-03T11:52:57.000-05:00
The espressif/idf container requires `. $IDF_PATH/export.sh` to put
idf.py on PATH. GitHub Actions container: runs with plain sh which
skips the container entrypoint. Also downgrade from v5.4 to v5.2
which matches our local Docker build environment.

Co-Authored-By: claude-flow &lt;ruv@ruv.net&gt;
diff --git a/.github/workflows/firmware-ci.yml b/.github/workflows/firmware-ci.yml
@@ -15,14 +15,15 @@ jobs:
     name: Build ESP32-S3 Firmware
     runs-on: ubuntu-latest
     container:
-      image: espressif/idf:v5.4
+      image: espressif/idf:v5.2
 
     steps:
       - uses: actions/checkout@v4
 
       - name: Build firmware
         working-directory: firmware/esp32-csi-node
         run: |
+          . $IDF_PATH/export.sh
           idf.py set-target esp32s3
           idf.py build
 
