Add Frontend Tests (#1571)

* Add TypeScript test workflow

* Update follow-redirects and katex versions

* Add Python setup and Poetry installation for backend

* Update Poetry version and setup Python in workflows

* Add Poetry installation step to GitHub Actions workflow

* Add Playwright report artifact upload and improve test script

* Update Playwright test configuration and add global teardown script

* Update path for playwright-report directory

* Update timeout value in playwright.config.ts

* Update page URLs in end-to-end tests

* Update GitHub Actions workflow and Playwright configuration

* Update TypeScript test workflow

* Add pattern and merge-multiple options to artifact download

* Update TypeScript test workflow to install Poetry

* Add cache steps for Playwright and Poetry

* Update PLAYWRIGHT_BROWSERS_PATH in TypeScript test workflow

* Add 'stuff/' to .gitignore

* Remove caching of Poetry virtualenv

* Update frontend tests to use Playwright for UI testing

* Add global teardown for removing temp database

* Add cache-hit condition to setup-node and setup-python steps

* Add new file to .gitignore and update ignored files

* Update playwright cache key in TypeScript test workflow

* Update path for blob-report in GitHub workflow

* Update path for playwright cache

* Update dependency installation in workflows

* Update baseURL in playwright.config.ts

* Update baseURL in playwright.config.ts

* Refactor test timeouts

* Remove playwright-report index.html file

* Add npm run start command to playwright.config.ts

* Update npm start command in playwright.config.ts

* Update Playwright browser caching and installation

* Update playwright cache path

* Update playwright cache path

* Update actions/cache version to v4

* Update Playwright cache key to use package-lock.json

* Update Playwright cache and install dependencies

* Fix typo in Playwright installation command

* Fix npm ci command in TypeScript test workflow

* Update TypeScript test workflow

.github/workflows/python_test.yml

@@ -0,0 +1,43 @@
+name: test
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "poetry.lock"
+      - "pyproject.toml"
+      - "src/backend/**"
+  pull_request:
+    branches: [dev]
+    paths:
+      - "poetry.lock"
+      - "pyproject.toml"
+      - "src/backend/**"
+
+env:
+  POETRY_VERSION: "1.8.2"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version:
+          - "3.10"
+          - "3.11"
+    env:
+      OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install poetry
+        run: pipx install poetry==$POETRY_VERSION
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: "poetry"
+      - name: Install dependencies
+        run: poetry install
+      - name: Run unit tests
+        run: |
+          make tests