ci: add ps2dev latest migration probe workflow

.github/workflows/ci-ps2dev-migration-probe.yml

@@ -0,0 +1,120 @@
+name: CI-ps2dev-migration-probe
+
+on:
+  pull_request:
+    paths:
+      - '.github/workflows/ci-ps2dev-migration-probe.yml'
+      - '.github/workflows/compilation.yml'
+      - 'Makefile'
+      - '**/*.mk'
+  workflow_dispatch:
+
+jobs:
+  build-probe:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - container_image: ps2max/dev:v20250725-2
+            label: ps2max-dev-v20250725-2
+          - container_image: ps2dev/ps2dev:latest
+            label: ps2dev-latest
+    container: ${{ matrix.container_image }}
+    steps:
+      - name: git checkout
+        uses: actions/checkout@v6
+
+      - name: Install diagnostic host dependencies (Alpine only)
+        run: |
+          if command -v apk >/dev/null 2>&1; then
+            # Consolidated ps2dev Alpine prerequisites: build tools, scripting, packaging, and gcc runtime libs.
+            apk add --no-cache \
+              bash \
+              make \
+              git \
+              zip \
+              unzip \
+              tar \
+              gzip \
+              xz \
+              python3 \
+              py3-pip \
+              py3-yaml \
+              gmp \
+              mpfr4 \
+              mpc1 \
+              perl \
+              cmake \
+              pkgconf \
+              coreutils \
+              findutils \
+              grep \
+              sed \
+              gawk \
+              diffutils
+          fi
+
+      - name: Mark workspace safe and fetch history
+        run: |
+          if command -v git >/dev/null 2>&1; then
+            git config --global --add safe.directory "$GITHUB_WORKSPACE"
+            git fetch --prune --unshallow || true
+          else
+            echo "git not available before dependency install"
+          fi
+
+      - name: Capture fingerprint and SDK snapshot
+        run: |
+          set +e
+          {
+            echo "===== /etc/os-release ====="
+            cat /etc/os-release || true
+            echo "===== uname -a ====="
+            uname -a || true
+            echo "===== env | sort ====="
+            env | sort || true
+            echo "===== PS2 vars ====="
+            echo "PS2DEV=${PS2DEV}"
+            echo "PS2SDK=${PS2SDK}"
+            echo "GSKIT=${GSKIT}"
+            echo "PATH=${PATH}"
+            echo "===== host tools ====="
+            which sh bash make git zip unzip tar gzip xz python3 perl cmake pkg-config gawk sed grep find || true
+            echo "===== cross tools ====="
+            which mips64r5900el-ps2-elf-gcc || true
+            which mipsel-none-elf-gcc || true
+            echo "===== cross tool versions ====="
+            mips64r5900el-ps2-elf-gcc --version || true
+            mipsel-none-elf-gcc --version || true
+            echo "===== PS2SDK tree ====="
+            ls -la "$PS2DEV" || true
+            ls -la "$PS2SDK" || true
+            ls -la "$GSKIT" || true
+            echo "===== Defs.make ====="
+            if test -f "$PS2SDK/Defs.make"; then
+              sed -n '1,160p' "$PS2SDK/Defs.make"
+            else
+              echo "Missing: $PS2SDK/Defs.make"
+            fi
+            echo "===== Makefile variables ====="
+            if test -f Makefile; then
+              grep -E '^(PS2DEV|PS2SDK|GSKIT|EE_|IOP_|DVP_|CC|CFLAGS|LDFLAGS|LIBS)\s*[:?+]?=' Makefile || true
+            fi
+          } | tee env-fingerprint.log
+
+          find "$PS2SDK" -maxdepth 4 \( -name '*.a' -o -name '*.h' -o -name '*.irx' -o -name '*.elf' \) -print 2>/dev/null | sort > ps2sdk-snapshot.log || true
+
+      - name: Build (same command as production workflow)
+        run: |
+          make --trace clean release 2>&1 | tee build.log
+
+      - name: Upload diagnostics
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v6
+        with:
+          name: diagnostics-${{ matrix.label }}
+          path: |
+            env-fingerprint.log
+            ps2sdk-snapshot.log
+            build.log