Add yamlfmt precommit hook (#2584)

Co-authored-by: Shuchang Zheng <wintonzheng0325@gmail.com>

.github/workflows/ci.yml

@@ -1,5 +1,4 @@
 name: Run tests and pre-commit
-
 # Run this job on pushes to `main`, and for pull requests. If you don't specify
 # `branches: [main], then this actions runs _twice_ on pull requests, which is
 # annoying.
@@ -8,12 +7,10 @@ on:
   pull_request:
   push:
     branches: [main]
-
 jobs:
   test:
     name: Run tests and pre-commit hooks
     runs-on: ubuntu-latest
-
     # Service containers to run with `container-job`
     services:
       # Label used to access the service container
@@ -27,23 +24,17 @@ jobs:
           POSTGRES_HOST_AUTH_METHOD: trust
         # Set health checks to wait until postgres has started
         options: >-
-          --health-cmd pg_isready
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
+          --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
         ports:
           # Maps tcp port 5432 on service container to the host
           - 5432:5432
-
     steps:
       - uses: actions/checkout@v3
-
       # If you wanted to use multiple Python versions, you'd have specify a matrix in the job and
       # reference the matrixe python version here.
       - uses: actions/setup-python@v4
         with:
           python-version: "3.11"
-
       # Cache the installation of Poetry itself, e.g. the next step. This prevents the workflow
       # from installing Poetry every time, which can be slow. Note the use of the Poetry version
       # number in the cache key, and the "-0" suffix: this allows you to invalidate the cache
@@ -54,7 +45,6 @@ jobs:
         with:
           path: ~/.local
           key: poetry-1.7.1
-
       # Install Poetry. You could do this manually, or there are several actions that do this.
       # `snok/install-poetry` seems to be minimal yet complete, and really just calls out to
       # Poetry's default install script, which feels correct. I pin the Poetry version here
@@ -69,7 +59,6 @@ jobs:
           version: 1.7.1
           virtualenvs-create: true
           virtualenvs-in-project: true
-
       # Cache your dependencies (i.e. all the stuff in your `pyproject.toml`). Note the cache
       # key: if you're using multiple Python versions, or multiple OSes, you'd need to include
       # them in the cache key. I'm not, so it can be simple and just depend on the poetry.lock.
@@ -79,19 +68,16 @@ jobs:
         with:
           path: .venv
           key: pydeps-${{ hashFiles('**/poetry.lock') }}
-
       # Install dependencies. `--no-root` means "install all dependencies but not the project
       # itself", which is what you want to avoid caching _your_ code. The `if` statement
       # ensures this only runs on a cache miss.
       - run: poetry install --no-interaction --no-root
         if: steps.cache-deps.outputs.cache-hit != 'true'
-
       # Now install _your_ project. This isn't necessary for many types of projects -- particularly
       # things like Django apps don't need this. But it's a good idea since it fully-exercises the
       # pyproject.toml and makes that if you add things like console-scripts at some point that
       # they'll be installed and working.
       - run: poetry install --no-interaction
-
       # Finally, run pre-commit.
       - name: Run all pre-commit hooks
         uses: pre-commit/action@v3.0.0
@@ -105,7 +91,6 @@ jobs:
           AZURE_GPT4O_MINI_API_VERSION: "dummy"
           AWS_REGION: "us-east-1"
           ENABLE_BEDROCK: "true"
-
       - name: Run alembic check
         env:
           ENABLE_OPENAI: "true"
@@ -123,7 +108,6 @@ jobs:
           ENABLE_OPENAI: "true"
           OPENAI_API_KEY: "sk-dummy"
         run: poetry run pytest tests
-
   fe-lint-build:
     name: Frontend Lint and Build
     runs-on: ubuntu-latest
@@ -133,17 +117,13 @@ jobs:
     steps:
       - name: Check out Git repository
         uses: actions/checkout@v4
-
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
           node-version-file: .nvmrc
-
       - name: Install Node.js dependencies
         run: npm ci
-
       - name: Run linter
         run: npm run lint
-      
       - name: Run build
         run: npm run build