v2.0.0 — The "Actually Functional" Refactor 🛠️

The TL;DR: Major architectural overhaul. We cleaned up the logic, hardened the security, and added the features we should have had at launch. ૮꒰ ˶• ༝ •˶꒱ā

New Features
* Full-Page & Area Scanners: Added a DOM crawler to scrape the entire page for currency patterns. Use the Area Scanner to drag-to-select specific nodes—no more manual entry.
* Heuristic Symbol Resolution: Ambiguous symbols ($, ¥, kr) are now resolved by sniffing page metadata, TLD, and language headers.
* Persistence Layer: Confirmed symbol choices (e.g., $ = AUD on .com.au) are cached per-domain in local storage.
* UX Overhaul: Added one-click swap buttons for currencies/amounts and a manual recalculate (=) trigger.

Performance & Security
* Hardened Permissions: Dropped the 'tabs' permission entirely. We now use 'activeTab' to ensure the script only wakes up on direct user interaction. Privacy-first, just the way it should be. ┐(￣ヘ￣)┌
* Numerical Precision: Switched to tabular numerals to prevent layout jitter. Decimals are styled separately for high-speed readability.
* Draggable Persistence: The popup is now a draggable singleton that persists while you browse the current tab.
* Rate Engine: Added live fetch telemetry, stale data warnings, and pivot currency fallback for the Frankfurter API.

QoL Improvements
* Dynamic input field resizing (no more truncated strings!).
* Pinned currencies remain persistent even after a swap.
* Updated branding assets across all scales. ( • ̀ω•́ )✧