refactor(cli)!: Refactor execution state handling and rename module

[ChristianPraiss]

Summary

• Join a container's entries into a single set -e shell script so cd/export/etc. persist across chained commands, while preserving fail-fast behavior
• Rename module from devops-parallel-runner to devops-cli across go.mod, README.md, and .golangci.yml (breaking change)
• Add a new reinstall command that downloads and installs the latest release binary for the current platform

Test plan

• go test ./...
• devops reinstall on macOS (arm64/amd64) and verify the binary is replaced
• Run a module command with multiple chained entries and confirm cd/export state carries over and a failing entry stops the rest

[Copilot]

Pull request overview

This PR refactors how per-container command entries are executed so shell state (e.g., cd, export) persists across chained entries, renames the Go module to github.com/convidera/devops-cli (breaking change), and introduces a devops reinstall command to self-update by downloading the latest release binary.

Changes:

• Combine per-container entries into a single sh -c script with set -e to preserve shell state and stop on first failure.
• Rename module/import paths and documentation references from devops-parallel-runner to devops-cli.
• Add a reinstall command that downloads and replaces the current executable with the latest release asset.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
exec.go	Runs all entries for a container in one shell invocation via joinEntries() to preserve shell state and fail-fast behavior.
exec_test.go	Adds tests verifying shell state carryover and that failures stop subsequent entries.
reinstall.go	Implements devops reinstall to download the latest release asset and replace the current binary.
main.go	Wires the new reinstall command into CLI dispatch and help output.
README.md	Updates install instructions for renamed repo/module and documents the new execution semantics and reinstall command.
go.mod	Renames the module path to github.com/convidera/devops-cli.
.golangci.yml	Updates goimports local prefix to the new module path.

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[Copilot]

Pull request overview

Copilot reviewed 7 out of 8 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (3)

reinstall.go:90

• downloadBinary uses http.Get with the default client (no timeout) and io.ReadAll with no size limit. This can hang indefinitely on network issues and can allocate unbounded memory if the response is unexpectedly large.

func downloadBinary(url string) ([]byte, error) {
	resp, err := http.Get(url)
	if err != nil {
		return nil, fmt.Errorf("downloading release: %w", err)
	}
	defer func() { _ = resp.Body.Close() }()

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("downloading release: unexpected status %s", resp.Status)
	}

	data, err := io.ReadAll(resp.Body)
	if err != nil {

exec.go:23

• The loop logs each entry as "Executing" before the combined script actually runs. If an early entry fails, later entries will have been printed as executed even though they never ran. Consider changing the wording to avoid misleading output (or emit the per-entry log lines from inside the generated script).

	for container, entries := range containers {
		fmt.Printf("Running commands for: %s\n", container)
		for _, entry := range entries {
			fmt.Printf("Executing: %s\n", entry.Script)
		}

reinstall.go:31

• The new reinstall flow is untested. Since the repo runs go test ./... in CI, adding unit tests (e.g., for releaseAsset mapping and download/HTTP error handling via httptest) would help prevent regressions without needing real GitHub network calls.

func runReinstall() int {
	asset, ok := releaseAsset(runtime.GOOS, runtime.GOARCH)
	if !ok {
		fmt.Fprintf(os.Stderr, "error: no release binary available for %s/%s\n", runtime.GOOS, runtime.GOARCH)
		return 1
	}

	target := selfPath()
	url := releaseBaseURL + "/" + asset

	fmt.Printf("Downloading %s...\n", url)
	data, err := downloadBinary(url)
	if err != nil {
		fmt.Fprintf(os.Stderr, "error: %v\n", err)
		return 1
	}