Fix GitHub Actions workflow triggering and remove duplicate config

[Copilot]

GitHub Actions workflow was not triggering because it only ran on tag pushes, but no tags existed in the repository.

Changes

• Removed duplicate workflow: Deleted .github/workflows/wails.yml (identical to main.yml)
• Expanded triggers: Added push to main and pull requests while preserving tag-based releases
• Updated deprecated action: actions/checkout@v2 → v4
• Fixed YAML formatting: Corrected indentation and spacing per linter

Workflow triggers now

on:
  push:
    branches:
      - main
    tags:
      - '*'
  pull_request:
    branches:
      - main

Workflow now executes on regular development activity instead of never running.

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[emrekayik]

that's look good