Add dev branch to CI triggers, add PyMySQL for test deps, add CI badge

- CI now triggers on push/PR to main, dev, and develop branches
- Add PyMySQL to requirements-test.txt so health tests can resolve MySQL dialect
- Add CI status badge to README (linked to dev branch)
- Update Python version badge from 3.8+ to 3.11+

https://claude.ai/code/session_01JeHvukSTgbNUdCmrpybjZm

Author: claude

.github/workflows/ci.yml

@@ -2,9 +2,9 @@ name: CI
 
 on:
   push:
-    branches: [main, develop]
+    branches: [main, dev, develop]
   pull_request:
-    branches: [main, develop]
+    branches: [main, dev, develop]
 
 jobs:
   lint:

README.md

@@ -2,7 +2,8 @@
 
 # DocBrain - Self-Hosted RAG Framework
 
-![Python Version](https://img.shields.io/badge/python-3.8%2B-blue)
+[![CI](https://github.com/shivama205/DocBrain/actions/workflows/ci.yml/badge.svg?branch=dev)](https://github.com/shivama205/DocBrain/actions/workflows/ci.yml)
+![Python Version](https://img.shields.io/badge/python-3.11%2B-blue)
 ![License](https://img.shields.io/badge/license-MIT-green)
 ![Security](https://img.shields.io/badge/security-self--hosted-brightgreen)
 

requirements-test.txt

@@ -9,6 +9,7 @@ starlette>=0.45.0
 
 # Database
 SQLAlchemy>=2.0.25
+PyMySQL>=1.1.0
 
 # Auth & security
 python-jose[cryptography]>=3.3.0