diff --git a/ai-hub/app/core/templates/provisioning/provision.sh.j2 b/ai-hub/app/core/templates/provisioning/provision.sh.j2
index 2bf46e8..d7165b4 100644
--- a/ai-hub/app/core/templates/provisioning/provision.sh.j2
+++ b/ai-hub/app/core/templates/provisioning/provision.sh.j2
@@ -36,17 +36,31 @@
 {{ config_yaml }}
 EOF
 
-# 3. Download standalone binary
-echo "[*] Downloading unified binary core for $BIN_ARCH..."
+# 3. Download standalone binary or Source fallback
+echo "[*] Downloading agent core..."
 INSTALLER_URL="{{ base_url }}/api/v1/agent/binary/$BIN_ARCH"
-if ! curl -sSLf "$INSTALLER_URL" -o cortex-agent; then
-    echo "❌ Failed to download binary for architecture: $BIN_ARCH from $INSTALLER_URL"
-    echo "Fallback: Try the python headless installer instead: curl -sSL {{ base_url }}/api/v1/nodes/provision/{{ node_id }} | python3"
-    exit 1
+
+if curl -sSLf "$INSTALLER_URL" -o cortex-agent; then
+    echo "✅ Downloaded standalone binary for $BIN_ARCH"
+    chmod +x cortex-agent
+    BINARY_PATH="$INSTALL_DIR/cortex-agent"
+else
+    echo "⚠️ Standalone binary for $BIN_ARCH was not found (404). Falling back to Source + Venv..."
+    SOURCE_URL="{{ base_url }}/api/v1/nodes/provision/{{ node_id }}?token={{ invite_token }}"
+    echo "[*] Downloading bootstrap source installer..."
+    
+    # Use python to run the legacy bootstrap installer which handles platform-native installs
+    if ! curl -sSLf "$SOURCE_URL" | python3; then
+        echo "❌ Provisioning failed via python bootstrap fallback."
+        exit 1
+    fi
+    # If the python script ran correctly, it would have already handled the rest of the install!
+    echo "✅ Python-based bootstrap provisioning successful!"
+    exit 0
 fi
-chmod +x cortex-agent
 
 # 4. Bootstrap daemon installation
+BINARY_PATH="$INSTALL_DIR/cortex-agent"
 echo "[*] Bootstrapping agent daemon..."
 # Run the standalone binary with the install-daemon flags (must implement in main.py)
 # Or we can just run it in the background if systemd is unavailable