Add no-cache response header to dashboard for immediate visibility after deploys; enhance Proxmox monitoring documentation and update flash script to allow Backup without a golden image.

chromium-setup/emmc-provisioning/dashboard/app.py

@@ -14,6 +14,16 @@ from flask import Flask, render_template, jsonify, request, send_file, Response
 
 app = Flask(__name__)
 
+
+@app.after_request
+def no_cache(response):
+    """Prevent browser from caching the dashboard so deploys are visible immediately."""
+    if request.path == "/" or request.path.startswith("/api/"):
+        response.headers["Cache-Control"] = "no-store, no-cache, must-revalidate, max-age=0"
+        response.headers["Pragma"] = "no-cache"
+    return response
+
+
 BASE_DIR = Path(os.environ.get("CM4_PROVISIONING_DIR", "/var/lib/cm4-provisioning"))
 STATUS_FILE = os.environ.get("CM4_STATUS_FILE", str(BASE_DIR / "status.json"))
 LOG_FILE = os.environ.get("CM4_LOG_FILE", str(BASE_DIR / "flash.log"))