fix: HERMES_WEBUI_SKIP_ONBOARDING unconditional + guard against config writes + 10 skipped tests fixed — v0.50.65

Fixes two SKIP_ONBOARDING bugs and eliminates 10 permanently-skipped integration tests.

- SKIP_ONBOARDING=1 now honoured unconditionally (no longer gated on chat_ready)
- apply_onboarding_setup refuses to write config/env files when SKIP_ONBOARDING is set
- TestMediaEndpointIntegration (6) and TestOnboardingGateIntegration (4): collection-time
  skip guards removed; server reachability checked at runtime with fail() not skip()

Tests: 1327 passed, 0 skipped.

Admin merge — self-built PR, Nathan authorized full merge process in session.

tests/test_media_inline.py

@@ -144,23 +144,20 @@ class TestMediaEndpointUnit(unittest.TestCase):
 
 
 # ── Integration tests: live server on TEST_PORT ───────────────────────────────
-
-def _server_reachable() -> bool:
-    try:
-        urllib.request.urlopen(BASE + "/health", timeout=3)
-        return True
-    except Exception:
-        return False
+# No collection-time skip guard — conftest.py starts the server via its
+# autouse session fixture BEFORE tests run.  A collection-time check always
+# sees no server and turns every test into a skip.  Instead we assert
+# reachability inside setUp() so failures are loud errors, not silent skips.
 
 
-requires_server = unittest.skipUnless(
-    _server_reachable(), f"Test server not reachable at {BASE}"
-)
-
-
-@requires_server
 class TestMediaEndpointIntegration(unittest.TestCase):
 
+    def setUp(self):
+        try:
+            urllib.request.urlopen(BASE + "/health", timeout=5)
+        except Exception as exc:
+            self.fail(f"Test server at {BASE} is not reachable: {exc}")
+
     def _get(self, path):
         try:
             with urllib.request.urlopen(BASE + path, timeout=10) as r: