[Bug] CRITICAL: Cannot create or save ANY SSH profiles (TypeError in UI)

**Describe the bug** I am unable to save any SSH profile. The issue occurs when creating a completely new SSH profile, or when copying an existing one. Clicking the "Save" button does nothing in the UI, but throws a `TypeError` in the DevTools console: `ERROR TypeError: Cannot convert undefined or null to object at Object.entries (<anonymous>) at SSHProfileSettingsComponent.save`. Previously, when trying to add a private key via the UI to an existing profile, the UI also silently failed with `TypeError: this.profile.options.privateKeys is not iterable` and `TypeError: this.profile.options.algorithms[k] is not iterable`. It seems the default configuration object for SSH profiles is getting corrupted or initialized with null/undefined fields. **To Reproduce** Steps to reproduce the behavior: 1. Go to Settings -> Profiles & connections 2. Click '+ New profile' -> SSH connection (or duplicate an existing one). 3. Fill in basic details (or leave defaults). 4. Click 'Save'. 5. The profile is not saved, and the error appears in DevTools. **Expected behavior** The profile should save successfully. **Environment:** - OS: Windows 11 - Tabby version: 1.0.232