Updated header and sidebar navigation across the Account tab.

Additional Fixes & Improvements

• Integrations moved to their own navigation section, split out from Organization Settings.
• All Workspaces now show in a single scrollable list near the top of navigation.
• Improved mobile navigation.
• Sign out moved from the bottom of the navigation pane to the profile page.
• Organization-level default settings shown directly on the Organization Settings page, rather than behind a button.
• Improved the Organization selector for users with access to multiple Organizations, so it no longer blocks the navigation pane.