feat(release): download per-SKU app binary (#65)

update_app.sh now requires a SKU and downloads from
api.jetkvm.com/releases/app/latest?sku=<sku>, so SDMMC and EMMC builds
get the matching app binary instead of sharing one.

Build script downloads the binary inside each variant build, and CI
passes the SKU from the matrix.

.github/workflows/build.yml

@@ -12,7 +12,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        board: [EMMC, SDMMC]
+        include:
+          - board: EMMC
+            sku: jetkvm-v2
+          - board: SDMMC
+            sku: jetkvm-v2-sdmmc
     name: Build (${{ matrix.board }})
     steps:
       - name: Checkout
@@ -40,7 +44,7 @@ jobs:
           echo "BUILD_VERSION_SOURCE=$BUILD_VERSION_SOURCE" >> $GITHUB_ENV
           echo "$BUILD_VERSION" > VERSION
       - name: Update jetkvm_app
-        run: ./update_app.sh
+        run: ./update_app.sh "${{ matrix.sku }}"
       - name: Build
         run: |
           echo "Version: $BUILD_VERSION (from $BUILD_VERSION_SOURCE)"

scripts/build_system.sh

@@ -128,6 +128,7 @@ build_system_variant() {
     local require_sd_zip="${4:-false}"
 
     run_quiet "Selecting ${label} board (${sku})" ./build.sh lunch "$board_config"
+    run_quiet "Updating JetKVM app binary for ${label} (${sku})" ./update_app.sh "$sku"
     run_quiet "Building ${label} system image" ./build.sh
 
     stage_system_variant "$label" "$sku" "$require_sd_zip"
@@ -141,8 +142,6 @@ msg_info "  Cleaning previous build output..."
 sudo rm -rf output/
 run_quiet "Cleaning SDK output" ./build.sh clean
 
-run_quiet "Updating JetKVM app binary" ./update_app.sh
-
 rm -rf "$SYSTEM_RELEASE_DIR"
 
 build_system_variant "SDMMC" "$SDMMC_SKU" "$SDMMC_BOARD_CONFIG" true

update_app.sh

@@ -1,22 +1,18 @@
 #!/bin/bash
-set -eE 
-set -x
+set -eE
 
-# Download latest app binary
-curl -L https://api.jetkvm.com/releases/app/latest -o /tmp/jetkvm_app
+SKU="${1:?Error: SKU is required (usage: $0 <sku>)}"
 
-# Verify download completed successfully
-if [ ! -f /tmp/jetkvm_app ]; then
-    echo "Error: Failed to download latest app binary"
+curl -fL "https://api.jetkvm.com/releases/app/latest?sku=${SKU}" -o /tmp/jetkvm_app
+
+if [ ! -s /tmp/jetkvm_app ]; then
+    echo "Error: Failed to download latest app binary for SKU ${SKU}"
     exit 1
 fi
 
-# Make executable
 chmod +x /tmp/jetkvm_app
-
-# Replace existing binary
 mv /tmp/jetkvm_app project/app/jetkvm/jetkvm/bin/jetkvm_app
 
-echo "Successfully updated jetkvm_app to latest version"
+echo "Successfully updated jetkvm_app to latest version for SKU ${SKU}"
 
-rm -rf project/app/jetkvm/out
+rm -rf project/app/jetkvm/out