Fix CI and mypy

Author: pamelafox

.github/workflows/app-tests.yaml

@@ -27,11 +27,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ["ubuntu-latest", "macos-latest-xlarge", "macos-13", "windows-latest"]
+        os: ["ubuntu-latest", "macos-26", "windows-latest"]
         python_version: ["3.10", "3.11", "3.12"]
-        exclude:
-          - os: macos-latest-xlarge
-            python_version: "3.10"
     env:
       UV_SYSTEM_PYTHON: 1
       POSTGRES_HOST: localhost
@@ -43,15 +40,12 @@ jobs:
         - uses: actions/checkout@v4
 
         - name: (MacOS) Install postgreSQL and pgvector using brew
-          if: matrix.os == 'macos-13' || matrix.os == 'macos-latest-xlarge'
+          if: matrix.os == 'macos-26'
           run: |
-            brew install postgresql@14
-            brew link --overwrite postgresql@14
+            brew install postgresql@18
+            brew link --overwrite postgresql@18
             brew install pgvector
-            # pgvector installs into the default PostgreSQL, copy extension files to postgresql@14
-            cp /opt/homebrew/share/postgresql/extension/vector* /opt/homebrew/share/postgresql@14/extension/
-            cp /opt/homebrew/lib/postgresql/vector.dylib /opt/homebrew/lib/postgresql@14/vector.dylib 2>/dev/null || true
-            brew services start postgresql@14 && sleep 1
+            brew services start postgresql@18 && sleep 1
             createuser -s ${{ env.POSTGRES_USERNAME }}
             psql -d postgres -c "ALTER USER ${{ env.POSTGRES_USERNAME }} WITH PASSWORD '${{ env.POSTGRES_PASSWORD }}'"
             psql -d postgres -c 'CREATE EXTENSION vector'

tests/conftest.py

@@ -175,7 +175,7 @@ async def mock_acreate(*args, **kwargs):
 def mock_openai_chatcompletion(monkeypatch_session):
     class AsyncResponseEventIterator:
         def __init__(self, answer: str):
-            self.events = []
+            self.events: list = []
             # Split at << to simulate chunked responses
             if answer.find("<<") > -1:
                 parts = answer.split("<<")