My LUKS-encrypted disk kept asking for a password every time I booted back from Windows. Here’s how TPM PCR registers work, why PCR 7 breaks in dual-boot, and the auto re-enrollment service I built to fix it.

Debugging an NVIDIA RTX 3070 eGPU that refused to work on a Framework 13 with Arch Linux. Covers PCI BAR allocation, Thunderbolt bridge windows, and getting KDE Wayland to composite on the right GPU.