[Alan-TheGentleman]

Fixes #150

PR Type

• Bug fix (type:bug)
• New feature (type:feature)
• Documentation only (type:docs)
• Code refactoring (type:refactor)
• Maintenance/tooling (type:chore)

Summary

• Adds a GitHub Actions workflow for installer safety checks.
• Runs Go tests, Linux Docker E2E matrix, non-blocking Termux E2E, and macOS build/help smoke.
• Uses concurrency cancellation to avoid wasting runner time on superseded pushes.

Changes

File	Change
.github/workflows/e2e-testing.yml	Adds PR/main/manual CI coverage for installer tests and E2E matrix.

Test Plan

• cd installer && go test ./...
• git diff --check
• bash -n installer/e2e/docker-test.sh
• GitHub Actions workflow run, pending after PR creation

Contributor Checklist

• Linked an approved issue
• Added exactly one type:* label
• Ran shellcheck on modified scripts, not applicable
• Docs updated if behavior changed, not applicable
• Conventional commit format
• No Co-Authored-By trailers