TypeWhisper 1.6.1

Managed license activation

Administrators can now provide a commercial license through the ManagedLicenseKey
preference in the com.typewhisper.mac domain. TypeWhisper activates it on launch
and saves the activation in the signed-in user's Keychain, without requiring users
to enter the key or administrators to script Polar API calls.

• Reuses existing activations across launches and supports administrator key changes.
• Shows a managed license status and hides conflicting manual license controls.
• Preserves an existing license if a replacement cannot be activated.
• Suppresses license selection and purchase prompts while a managed key is configured.
• Reports Keychain storage failures instead of marking an unsaved activation as successful.

See the deployment guide and example configuration profile.
Configuration profiles are not secret stores. The app does not display the key,
but this does not prevent a sufficiently privileged user from retrieving it.

Bundled integration fixes

• Fix OpenRouter audio uploads for providers that require WAV instead of compressed M4A.
• Restore ElevenLabs compatibility with the TypeWhisper 1.6 host.

Broader MDM configuration for providers/models, cloud usage, updates, launch at
login, and onboarding is tracked separately in #1313.

Release validation is tracked in #1315.