Add master branch to CI/CD workflow triggers

[Copilot]

The repository has both main and master branches, but CI/CD workflows only triggered on main. Pushes to master bypassed test and lint validation.

Changes

• Add master to push triggers in tests.yml and lint.yml workflows
• Add master to pull request triggers in both workflows

on:
  push:
    branches: [ main, master, copilot/* ]
  pull_request:
    branches: [ main, master ]

Tests and linting now run on all commits and PRs to master, preventing breaking changes from entering the branch.

Original prompt

add to CI/CD trigger tests when push to master , to prevent breaking changes go into the master

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.