ci: add GitHub Actions (pytest + CLI smoke) and README badges

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: rockyzl

.github/workflows/ci.yml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  push:
+    branches: [master, main]
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11", "3.12"]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install (editable + dev)
+        run: pip install -e ".[dev]"
+      - name: Run tests
+        run: pytest -q
+      - name: CLI smoke test
+        run: |
+          python -m scientific_agent_lab.cli run \
+            -i examples/materials_demo/sample_input.json \
+            -o outputs/demo_report.md

README.md

@@ -1,5 +1,9 @@
 # scientific-agent-lab
 
+[![CI](https://github.com/rockyzl/scientific-agent-lab/actions/workflows/ci.yml/badge.svg)](https://github.com/rockyzl/scientific-agent-lab/actions/workflows/ci.yml)
+ ![Python 3.10+](https://img.shields.io/badge/python-3.10%2B-blue)
+ ![License: MIT](https://img.shields.io/badge/license-MIT-green)
+
 **An open-source framework for evidence-grounded scientific agents — with replayable
 evaluation and human review as the core spine.**