Update GH Actions checkout module and add windows/macos download scripts

Author: danrmiller

.github/workflows/release.yml

@@ -20,7 +20,7 @@ jobs:
           - target: aarch64-unknown-linux-gnu
             asset: libepic_cash_wallet-linux-aarch64.so
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Add Rust target
         run: rustup target add ${{ matrix.target }}
@@ -57,7 +57,7 @@ jobs:
           - target: x86_64-linux-android
             abi: x86_64
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Add Rust target
         run: rustup target add ${{ matrix.target }}
@@ -84,7 +84,7 @@ jobs:
   build-ios:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: dtolnay/rust-toolchain@master
         with:
@@ -129,7 +129,7 @@ jobs:
   build-macos:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: dtolnay/rust-toolchain@master
         with:
@@ -177,7 +177,7 @@ jobs:
     container:
       image: stackwallet/stackwallet-ci:latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Add Rust target
         run: rustup target add x86_64-pc-windows-gnu

scripts/macos/download.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+set -e
+
+LIB_ROOT=../..
+REPO="cypherstack/flutter_libepiccash"
+BASE_URL="https://github.com/${REPO}/releases/download"
+
+TAG=$(git -C "$LIB_ROOT" describe --tags --exact-match HEAD 2>/dev/null) || {
+    echo "Error: flutter_libepiccash is not at a tagged commit."
+    echo "Pin the submodule to a release tag to use download mode."
+    echo "Current commit: $(git -C "$LIB_ROOT" rev-parse HEAD)"
+    exit 1
+}
+
+TMPDIR=$(mktemp -d)
+trap 'rm -rf "$TMPDIR"' EXIT
+
+curl -fSL "${BASE_URL}/${TAG}/checksums.txt" -o "$TMPDIR/checksums.txt"
+
+download_and_verify() {
+    local asset="$1"
+    curl -fSL "${BASE_URL}/${TAG}/${asset}" -o "$TMPDIR/${asset}"
+    grep "^[0-9a-f]*  ${asset}$" "$TMPDIR/checksums.txt" | (cd "$TMPDIR" && sha256sum -c)
+}
+
+download_and_verify "EpicWallet.xcframework.zip"
+
+mkdir -p "$LIB_ROOT/macos/framework"
+rm -rf "$LIB_ROOT/macos/framework/EpicWallet.xcframework"
+unzip -q "$TMPDIR/EpicWallet.xcframework.zip" -d "$TMPDIR/xcfw"
+cp -r "$TMPDIR/xcfw/EpicWallet.xcframework" "$LIB_ROOT/macos/framework/EpicWallet.xcframework"

scripts/windows/download.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+set -e
+
+LIB_ROOT=../..
+REPO="cypherstack/flutter_libepiccash"
+BASE_URL="https://github.com/${REPO}/releases/download"
+
+TAG=$(git -C "$LIB_ROOT" describe --tags --exact-match HEAD 2>/dev/null) || {
+    echo "Error: flutter_libepiccash is not at a tagged commit."
+    echo "Pin the submodule to a release tag to use download mode."
+    echo "Current commit: $(git -C "$LIB_ROOT" rev-parse HEAD)"
+    exit 1
+}
+
+TMPDIR=$(mktemp -d)
+trap 'rm -rf "$TMPDIR"' EXIT
+
+curl -fSL "${BASE_URL}/${TAG}/checksums.txt" -o "$TMPDIR/checksums.txt"
+
+download_and_verify() {
+    local asset="$1"
+    curl -fSL "${BASE_URL}/${TAG}/${asset}" -o "$TMPDIR/${asset}"
+    grep "^[0-9a-f]*  ${asset}$" "$TMPDIR/checksums.txt" | (cd "$TMPDIR" && sha256sum -c)
+}
+
+download_and_verify "libepic_cash_wallet-windows-x86_64.dll"
+
+mkdir -p "$LIB_ROOT/scripts/windows/build"
+cp "$TMPDIR/libepic_cash_wallet-windows-x86_64.dll" \
+   "$LIB_ROOT/scripts/windows/build/libepic_cash_wallet.dll"