Fix CI: Set TMPDIR in test step instead of job-level env

Author: ekg

.github/workflows/ci.yml

@@ -13,8 +13,6 @@ jobs:
   test:
     name: Test Suite
     runs-on: ${{ matrix.os }}
-    env:
-      TMPDIR: ${{ runner.temp }}  # Use GitHub's temp directory for FastGA temporary files
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
@@ -69,6 +67,8 @@ jobs:
 
       - name: Run tests
         run: |
+          # Set TMPDIR to GitHub's temp directory to avoid disk space issues
+          export TMPDIR="${{ runner.temp }}"
           # Set PATH to include FastGA binaries (needed for FastGA's system() calls)
           # MUST use absolute paths because FastGA runs from different working directories
           FASTGA_DEBUG=$(find target/debug/build -name "FastGA" -type f | head -1)
@@ -77,6 +77,7 @@ jobs:
           FASTGA_RELEASE_ABS=$(cd $(dirname $FASTGA_RELEASE) && pwd)
           export PATH="$FASTGA_DEBUG_ABS:$FASTGA_RELEASE_ABS:$PATH"
           echo "PATH for tests: $PATH"
+          echo "TMPDIR for tests: $TMPDIR"
           # FastGA has race conditions with parallel test execution on Linux
           # Run tests sequentially and skip problematic tests on CI
           # (end-to-end tests have FastGA race conditions, golden tests need ONEview)
@@ -98,8 +99,6 @@ jobs:
   build:
     name: Build Check
     runs-on: ${{ matrix.os }}
-    env:
-      TMPDIR: ${{ runner.temp }}  # Use GitHub's temp directory for FastGA temporary files
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]