# subscribers_history header tools update

Scope: `subscribers_history.php` only.

Root-cause notes:
- The history page was already isolated under `ua-history-contract-page`; the requested changes belong to its contract, not to global button/card rules.
- Header layout is handled in `assets/css/ua_subscribers_history_adapter.css` only as layout.
- Visual appearance remains centralized in `assets/css/ua_program_unified.css` under the `ua-history-contract-page` contract.

Changes:
- Combined `سجل المشترك` and the current subscriber identifier/name into a single title line.
- Kept the unified-reading text in a dedicated info chip with the help icon inside it.
- Added page actions on the opposite side of the same header row: print, Excel export, and PDF/print-export view.
- Added server-side Excel export as an HTML XLS response.
- Added PDF export view that opens a print-ready page for saving as PDF from the browser.

No changes to MikroTik sync, subscriber history logic, invoices, usage, or activity log queries.
