Added template system to format content for AI tools (summarize, explain, etc.) with stats display. Enhanced privacy by blocking copying on AI sites and login pages, plus improved UI with better dropdown and spacing.

Reduced permissions (privacy improvement)

Earlier versions of TextGrab took a broad "Access your data for all websites" permission because the content scripts ran on every page you visited. This update fixes that.

What changed:
- The extension now uses Firefox's activeTab permission instead of a permanent all-sites permission.
- Page access is granted temporarily, one tab at a time, and only when you deliberately use TextGrab (click the toolbar button or a right-click menu item).
- No more persistent access to every website you browse; data is only read from the current page when you invoke the extension.

What's the same:
- Extract clean article text + convert to markdown
- One-click copy to clipboard
- Context menu options
- No data collection — everything runs locally

Why: This narrows the permission footprint so TextGrab only ever reads the page you're actively working on, when you choose to — nothing always-on in the background.