feat: adding cursory Python 3.14 support (#6298)

* catching error thrown by asyncio
* using 2nd check for annotations given Pydantic 2.12 changes
* skipping tests for remote graph bc langgraph-api is dependent on
`jsonschema-rs`
* skipping tests w/ pydantic v1 models

```bash
hint: This usually indicates a problem with the package or the build environment.
  help: `jsonschema-rs` (v0.29.1) was included because `langgraph:dev` (v1.0.0rc1) depends on `langgraph-cli[inmem]` which
        depends on `langgraph-api` (v0.4.29) which depends on `jsonschema-rs`
```

not yet testing for free threaded python, that'll be much more involved!

ended up separating lint / testing deps during this process bc I was
getting a ton of not required deps while testing that were complicating
things :/

.github/workflows/_integration_test.yml

@@ -14,6 +14,7 @@ jobs:
         python-version:
           - "3.10"
           - "3.11"
+          - "3.14"
         example:
           - name: A
             workdir: libs/cli/examples

.github/workflows/_lint.yml

@@ -48,7 +48,7 @@ jobs:
       - name: Install dependencies
         if: steps.changed-files.outputs.all
         working-directory: ${{ inputs.working-directory }}
-        run: uv sync --frozen --group dev
+        run: uv sync --frozen --group lint
 
       - name: Get .mypy_cache to speed up mypy
         if: steps.changed-files.outputs.all
@@ -74,7 +74,7 @@ jobs:
       - name: Install test dependencies
         if: steps.changed-files.outputs.all
         working-directory: ${{ inputs.working-directory }}
-        run: uv sync --group dev
+        run: uv sync --group lint
 
       - name: Get .mypy_cache_test to speed up mypy
         if: steps.changed-files.outputs.all

.github/workflows/_test.yml

@@ -21,6 +21,7 @@ jobs:
           - "3.11"
           - "3.12"
           - "3.13"
+          - "3.14"
 
     name: "test #${{ matrix.python-version }}"
     steps:
@@ -41,7 +42,7 @@ jobs:
       - name: Install dependencies
         shell: bash
         working-directory: ${{ inputs.working-directory }}
-        run: uv sync --frozen --group dev
+        run: uv sync --frozen --group test --no-dev
 
       - name: Run tests
         shell: bash

.github/workflows/_test_langgraph.yml

@@ -16,6 +16,7 @@ jobs:
           - "3.11"
           - "3.12"
           - "3.13"
+          - "3.14"
 
     defaults:
       run:
@@ -38,7 +39,7 @@ jobs:
 
       - name: Install dependencies
         shell: bash
-        run: uv sync --frozen --group dev
+        run: uv sync --frozen --group test --no-dev
 
       - name: Run tests
         shell: bash

.github/workflows/baseline.yml

@@ -26,7 +26,7 @@ jobs:
           enable-cache: true
           cache-suffix: "bench"
       - name: Install dependencies
-        run: uv sync --group dev
+        run: uv sync --group test
       - name: Run benchmarks
         run: OUTPUT=out/benchmark-baseline.json make -s benchmark
       - name: Save outputs

.github/workflows/bench.yml

@@ -28,7 +28,7 @@ jobs:
           enable-cache: true
           cache-suffix: "bench"
       - name: Install dependencies
-        run: uv sync --group dev
+        run: uv sync --group test
       - name: Download baseline
         uses: actions/cache/restore@v4
         with:

.github/workflows/release.yml

@@ -221,7 +221,7 @@ jobs:
           uv run python -c "import $IMPORT_NAME; print(dir($IMPORT_NAME))"
 
       - name: Import test dependencies
-        run: uv sync --group dev
+        run: uv sync --group test
         working-directory: ${{ inputs.working-directory }}
 
       # Overwrite the local version of the package with the test PyPI version.