feat: add CLI versioning header and update client initialization

[karamouche]

Add missing header to track usage and versions of the CLI

Summary by CodeRabbit

• Bug Fixes
  • Improved request handling so transcription requests consistently include the correct authentication and version headers.
  • The CLI now sends a version identifier with transcription requests, which may help with API compatibility and diagnostics.
  • Updated transcribe workflows to apply the same header behavior across upload, transcription, and listing operations.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 40951b9d-91f3-49a6-854a-3e0dbac9f1cf

📥 Commits

Reviewing files that changed from the base of the PR and between 91e6682 and 1aeea85.

📒 Files selected for processing (7)

• cmd/transcribe.go
• cmd/transcribe_test.go
• pkg/client/client.go
• pkg/client/client_test.go
• pkg/client/transcribe.go
• pkg/client/transcribe_test.go
• pkg/client/transcription.go

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📝 Walkthrough

Walkthrough

GladiaClient's constructor now accepts a cliVersion parameter, stored as a new CLIVersion field defaulting to "dev". A new setRequestHeaders method sets both x-gladia-key and x-gladia-version headers and is now used by UploadFile, createAndExecuteRequest, and ListTranscriptions. Callers and tests updated accordingly.

Changes

CLI version header propagation

Layer / File(s)	Summary
Client struct, constructor, and shared header helper pkg/client/client.go, pkg/client/client_test.go	GladiaClient gains a CLIVersion field; NewGladiaClient takes a cliVersion parameter defaulting to "dev"; new setRequestHeaders method sets x-gladia-key and x-gladia-version headers.
Wire header helper into transcribe and transcription requests pkg/client/transcribe.go, pkg/client/transcription.go, pkg/client/transcribe_test.go	UploadFile, createAndExecuteRequest, and ListTranscriptions now call setRequestHeaders instead of setting x-gladia-key directly; tests assert x-gladia-version header and pass the version argument.
CLI command version wiring and end-to-end test cmd/transcribe.go, cmd/transcribe_test.go	newTranscribeCmd passes version to NewGladiaClient; existing tests updated with the new argument; new test verifies x-gladia-version header equals "cli/dev" end-to-end.

Estimated code review effort: 2 (Simple) | ~12 minutes

Possibly related PRs

• gladiaio/gladia-cli#22: Builds on the same GladiaClient/NewGladiaClient client structure extended in this PR.
• gladiaio/gladia-cli#24: Both PRs modify pkg/client/transcribe.go's UploadFile implementation.

Suggested reviewers: jqueguiner

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: adding a CLI versioning header and updating client initialization.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/x-gladia-version

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