fix(reminders): support OAuth SMTP accounts (#5649)

tests/test_note_reminder_email_oauth.py

@@ -0,0 +1,62 @@
+"""Regression coverage for passwordless Google OAuth reminder senders."""
+
+import asyncio
+from pathlib import Path
+from unittest.mock import patch
+
+from routes.note_routes import dispatch_reminder
+
+
+_REPO = Path(__file__).resolve().parents[1]
+
+
+def test_dispatch_reminder_sends_with_google_oauth_without_smtp_password():
+    cfg = {
+        "account_name": "Workspace",
+        "smtp_host": "smtp.gmail.com",
+        "smtp_port": 587,
+        "smtp_security": "starttls",
+        "smtp_user": "alice@example.edu",
+        "smtp_password": "",
+        "from_address": "alice@example.edu",
+        "oauth_provider": "google",
+    }
+    sent = []
+
+    def fake_send(actual_cfg, sender, recipients, message):
+        sent.append((actual_cfg, sender, recipients, message))
+
+    with (
+        patch("src.settings.load_settings", return_value={}),
+        patch("routes.email_routes._get_email_config", return_value=cfg),
+        patch("routes.email_helpers._send_smtp_message", side_effect=fake_send),
+        patch("core.database.SessionLocal", side_effect=AssertionError("fallback lookup is not needed")),
+    ):
+        result = asyncio.run(dispatch_reminder(
+            "Reminder: Submit report",
+            "The report is due today.",
+            note_id="",
+            owner="alice@example.edu",
+            queue_browser=False,
+            settings_override={
+                "reminder_channel": "email",
+                "reminder_llm_synthesis": False,
+            },
+        ))
+
+    assert result["email_sent"] is True
+    assert result["email_error"] == ""
+    assert len(sent) == 1
+    actual_cfg, sender, recipients, message = sent[0]
+    assert actual_cfg is cfg
+    assert sender == "alice@example.edu"
+    assert recipients == ["alice@example.edu"]
+    assert "Subject: Reminder (Odysseus): Submit report" in message
+
+
+def test_reminder_settings_offer_oauth_smtp_accounts():
+    source = (_REPO / "static" / "js" / "settings.js").read_text(encoding="utf-8")
+    helper = source[source.index("const smtpAccountReady"):source.index("const smtpAccountReady") + 260]
+
+    assert "account.has_smtp_password || account.oauth_provider === 'google'" in helper
+    assert source.count(".filter(smtpAccountReady)") == 2