v0.13.11 — Android safety net for product PDFs
Adds a route handler that intercepts raw HTTPS .pdf URLs from our content hosts (SalesLayer / CloudFront / LIGMAN) and opens them via the system chooser instead of Chrome Custom Tabs.
Fixes Samsung One UI 8.5 blank-black-page bug on Spec Sheet / Installation Manual buttons. No iOS or Web changes.
QA targets: Xiaomi (regression — PDFs still open) + Samsung 8.5 (Spec Sheet now opens chooser, pick any option, PDF renders).