Quantum Nebula Hot Product Collector - Chrome Extension

How to load:
1. Extract this zip first.
2. Open Chrome: chrome://extensions
3. Enable Developer mode.
4. Click "Load unpacked".
5. Select the extracted collector-extension folder.

How to use:
1. Open a Doudian/Douyin ecommerce product ranking page.
2. Manually choose category, time range, brand type, sorting, and filters on the page.
3. Open the extension side panel.
4. Open and log in to the Quantum Nebula desktop client.
5. Optional: click Check Connection.
6. Optional: enable "only first-listed products".
7. Click Start Collection.
8. The extension sends linked rows to the local Quantum Nebula client bridge after normal completion and saves them in the local desktop app library.
9. If sync fails, click Retry Sync.
10. View and export the collected data from the Quantum Nebula client.

Search word list download:
1. Open the Douyin ecommerce search word list page: /shop/chance/rank-search.
2. Click Read Categories, then select the categories whose word packages should be downloaded.
3. Click Download Search Word List. The extension switches each selected category, waits until the page category label and table are stable, then clicks the page's native Download Details button.

Safety:
- Only collects visible ranking rows.
- Does not read cookies, tokens, localStorage, or sessionStorage.
- Does not store a Quantum Nebula access token or plugin authorization code.
- Does not auto-search, auto-select time/brand filters, guess links from another page, track products, or bypass verification.
- Search word list download only uses visible category controls and the native Download Details button. Downloaded files are renamed with category path and timestamp when Chrome allows it.
