fix: fall back to Pulse server when GitHub download fails for pulse-sensor-proxy

The install-sensor-proxy.sh script now tries GitHub releases first, then falls
back to downloading from the Pulse server if GitHub fails or doesn't have the
binary (common when building from main).

The LXC installer sets PULSE_SENSOR_PROXY_FALLBACK_URL to point to the Pulse
server running inside the newly created LXC, ensuring the proxy binary can be
downloaded from /api/install/pulse-sensor-proxy.

This fixes the issue where installing with --main would fail to install
pulse-sensor-proxy on the host because GitHub releases don't include it yet.

install.sh

@@ -1108,6 +1108,8 @@ create_lxc_container() {
     # Run proxy installer if downloaded
     if [[ -f "$proxy_script" ]]; then
         chmod +x "$proxy_script"
+        # Set fallback URL to download from Pulse server inside the LXC
+        export PULSE_SENSOR_PROXY_FALLBACK_URL="http://${IP}:${frontend_port}/api/install/pulse-sensor-proxy"
         if bash "$proxy_script" --ctid "$CTID" 2>&1 | tee /tmp/proxy-install-${CTID}.log; then
             print_info "Temperature proxy installed successfully"
         else

scripts/install-sensor-proxy.sh

@@ -191,35 +191,40 @@ else
     esac
 
     # If fallback URL is provided (e.g., from Pulse setup script), use it directly
-    if [[ -n "$FALLBACK_BASE" ]]; then
+    # Try GitHub first for releases
-        FALLBACK_URL="${FALLBACK_BASE%/}?arch=${ARCH_LABEL}"
-        print_info "Downloading $BINARY_NAME from Pulse server..."
-        if ! curl -fsSL "$FALLBACK_URL" -o "$BINARY_PATH.tmp"; then
-            print_error "Failed to download proxy binary from $FALLBACK_URL"
-            exit 1
-        fi
-    else
-        # Fallback not provided, download from GitHub release
     GITHUB_REPO="rcourtman/Pulse"
+    DOWNLOAD_SUCCESS=false
+
     if [[ "$VERSION" == "latest" ]]; then
         RELEASE_URL="https://api.github.com/repos/$GITHUB_REPO/releases/latest"
         print_info "Fetching latest release info..."
-            RELEASE_DATA=$(curl -fsSL "$RELEASE_URL")
+        RELEASE_DATA=$(curl -fsSL "$RELEASE_URL" 2>/dev/null)
         VERSION=$(echo "$RELEASE_DATA" | grep -o '"tag_name": "[^"]*"' | cut -d'"' -f4)
-            if [[ -z "$VERSION" ]]; then
-                print_error "Failed to determine latest version"
-                exit 1
-            fi
-            print_info "Latest version: $VERSION"
-        fi
 
+        if [[ -n "$VERSION" ]]; then
+            print_info "Latest version: $VERSION"
             DOWNLOAD_URL="https://github.com/$GITHUB_REPO/releases/download/$VERSION/$BINARY_NAME"
             print_info "Downloading $BINARY_NAME from GitHub..."
-        if ! curl -fsSL "$DOWNLOAD_URL" -o "$BINARY_PATH.tmp"; then
+            if curl -fsSL "$DOWNLOAD_URL" -o "$BINARY_PATH.tmp" 2>/dev/null; then
-            print_error "Failed to download binary from $DOWNLOAD_URL"
+                DOWNLOAD_SUCCESS=true
-            exit 1
             fi
         fi
+    fi
+
+    # Fall back to Pulse server if GitHub failed or fallback is provided
+    if [[ "$DOWNLOAD_SUCCESS" != true ]] && [[ -n "$FALLBACK_BASE" ]]; then
+        FALLBACK_URL="${FALLBACK_BASE%/}?arch=${ARCH_LABEL}"
+        print_info "Downloading $BINARY_NAME from Pulse server..."
+        if curl -fsSL "$FALLBACK_URL" -o "$BINARY_PATH.tmp" 2>/dev/null; then
+            DOWNLOAD_SUCCESS=true
+        fi
+    fi
+
+    # Exit if both methods failed
+    if [[ "$DOWNLOAD_SUCCESS" != true ]]; then
+        print_error "Failed to download binary from GitHub or Pulse server"
+        exit 1
+    fi
 
     # Make executable and move to final location
     chmod +x "$BINARY_PATH.tmp"