test: fix auth-mode mismatch and stale QuotaInsufficientError kwargs

Pin AUTH_TYPE=LOCAL (and REGISTRATION_ENABLED=TRUE) in the test bootstrap so
the email/password auth routers mount during integration tests regardless of a
developer's .env=GOOGLE; without this the upload tests 404 on registration.
Also update three tests to the current QuotaInsufficientError signature
(balance_micros) after used_micros/limit_micros were removed.

surfsense_backend/tests/conftest.py

@@ -13,6 +13,14 @@ TEST_DATABASE_URL = os.environ.get("TEST_DATABASE_URL", _DEFAULT_TEST_DB)
 # DATABASE_URL in the environment (e.g. from .env or shell profile).
 os.environ["DATABASE_URL"] = TEST_DATABASE_URL
 
+# Integration tests authenticate over HTTP via email/password, so the
+# password-auth routers must be mounted (they are skipped under AUTH_TYPE=GOOGLE).
+# setdefault (not load_dotenv, which runs later with override=False) lets a
+# developer's .env=GOOGLE be overridden here while still honouring an explicitly
+# exported shell AUTH_TYPE.
+os.environ.setdefault("AUTH_TYPE", "LOCAL")
+os.environ.setdefault("REGISTRATION_ENABLED", "TRUE")
+
 import pytest  # noqa: E402
 
 from app.db import DocumentType  # noqa: E402

surfsense_backend/tests/integration/podcasts/test_draft_task.py

@@ -76,8 +76,7 @@ async def test_quota_denial_fails_the_podcast_without_a_transcript(
     async def _deny(**_kwargs):
         raise QuotaInsufficientError(
             usage_type="podcast_generation",
-            used_micros=5_000_000,
-            limit_micros=5_000_000,
+            balance_micros=0,
             remaining_micros=0,
         )
         yield  # pragma: no cover - unreachable, satisfies the CM protocol

surfsense_backend/tests/unit/services/test_quota_checked_vision_llm.py

@@ -105,8 +105,7 @@ async def test_ainvoke_propagates_quota_insufficient_error(monkeypatch):
     async def _denying_billable_call(**_kwargs):
         raise QuotaInsufficientError(
             usage_type="vision_extraction",
-            used_micros=5_000_000,
-            limit_micros=5_000_000,
+            balance_micros=0,
             remaining_micros=0,
         )
         yield  # unreachable but required for asynccontextmanager type

surfsense_backend/tests/unit/tasks/test_video_presentation_billing.py

@@ -98,8 +98,7 @@ async def _denying_billable_call(**kwargs):
     _CALL_LOG.append(kwargs)
     raise QuotaInsufficientError(
         usage_type=kwargs.get("usage_type", "?"),
-        used_micros=5_000_000,
-        limit_micros=5_000_000,
+        balance_micros=0,
         remaining_micros=0,
     )
     yield SimpleNamespace()  # pragma: no cover