Fixes

Increase tab limit trigger window from 400 ms to 10 seconds to account for larger sites that take longer to resolve from a new blank tab.

Added exclusion settings: toggle to exclude extension pages (default on), toggle to exclude browser config pages like chrome://, edge://, about: (default on), and a site domain exclusion list supporting * wildcards (e.g. *.mozilla.org).

Soft-limit warning modal now acts as "Continue anyway" if dismissed by clicking outside it (blur-to-continue).

Hard-limit modal is now locked — clicking away refocuses it instead of dismissing; only "Continue anyway" can close it.

Extension icon badge now shows the current tab count.