Technodom Price Converter

This extension automatically converts prices on technodom.kz
from Kazakhstani Tenge (KZT) to USD and RUB using up-to-date exchange rates.

Features:
• Product page conversion
• Catalog & search results conversion
• Clean native UI
• No tracking, no ads
• Comparison with shops: shop.kz, sulpak.kz, ispace.kz, itmag.kz

Release Notes:
1.0.4:
- Extension popup UI via `action.default_popup` with its own `popup.html`, `popup.css`, and `popup.js`.
- Popup controls for enabling/disabling on-page features and manually refreshing the active supported tab.
- Local comparison list stored in Chrome storage so saved products persist between tabs and sessions.
- Save-to-compare button inside the injected `Для сравнения` block on supported product pages.
- Product-title extraction and save support for `shop.kz`.
- Product-title extraction and save support for `sulpak.kz`.
- Product-title extraction and save support for `ispace.kz`.
- Product-title extraction and save support for `itmag.kz`.
- Store-aware saved product records containing title, store name, product URL, and prices in `KZT`, `USD`, and `RUB`.
- Comparison metadata (`titleKey` / `compareKey`) to preserve a foundation for smarter matching of similar products from different stores.

1.0.3:
- Added conversion support for alternative `.product__price-container` / `.product__current-price` markup on both product pages and repeated catalog cards.

1.0.2:
- Restored price conversion on initial page open by reattaching DOM observation after page hydration and in-site navigation.
- Added support for both `technodom.kz` and `www.technodom.kz` URLs in the extension match patterns.

1.0.1:
- Improved price selector strategy using `data-testid="product-price"` with class-based fallbacks.
- Added safe exchange-rate fetch handling with timeout and cached fallback on failures.
- Optimized `MutationObserver` scope and trigger conditions to reduce unnecessary rescans.
- Refreshed already-converted prices when cached exchange rates rotate (TTL boundary).
- Bumped extension version in `manifest.json` to `1.0.1`.

1.0.0:
- Initial Chrome extension implementation for converting `KZT` prices on `technodom.kz` to `USD` and `RUB`.