Merge origin/main into apk-store-fixes, preserving store and headset features

Keep the union of server routes, desktop resources and responsive controls. Preserve OpenXR install defaults and telemetry hooks alongside library artwork. Adapt the resource test to single-file entries and avoid a completed-refresh race in the F-Droid test.

Co-Authored-By: GPT-6 Astra <noreply@openai.com>

tests/test_server.py

@@ -5,6 +5,7 @@ request guards and input validation, which all run before any SSH call.
 
 Run: python3 -m unittest discover -s tests
 """
+import sandbox  # noqa: F401  (first: keeps tests off real data and services)
 import http.client
 import io
 import json
@@ -83,6 +84,7 @@ class ServerGuards(unittest.TestCase):
 
     def test_api_needs_custom_header(self):
         # <img src> and plain form posts from other sites can't set it.
+        self.assertEqual(self.request("POST", "/api/comfort", {"action": "start"})[0], 403)
         self.assertEqual(self.request("GET", "/api/status")[0], 403)
         self.assertEqual(self.request("GET", "/api/screenshot?view=headset")[0], 403)
         self.assertEqual(self.request("GET", "/api/shots")[0], 403)
@@ -98,6 +100,8 @@ class ServerGuards(unittest.TestCase):
 
     def test_input_validation(self):
         cases = [
+            ("/api/comfort", {"action": "poweroff"}),
+            ("/api/comfort", {"action": "start", "minutes": 0}),
             ("/api/launch", {"appid": "620; rm -rf ~"}),
             ("/api/launch", {"appid": ""}),
             ("/api/flatpak", {"id": "org.example.App;id", "action": "install"}),