What it does
A browser-based installer for LineageOS and other alternative Android systems. It speaks fastboot and ADB over WebUSB, reads the codename, firmware version and lock state off the connected handset, and generates the install procedure for that exact device — the extra partitions it needs, the stock firmware it expects, the unlock command it actually takes. The device data is generated from the LineageOS wiki's own files rather than transcribed from them, so all 733 devices the wiki documents are covered: 554 get a full procedure, and the other 179 are told plainly that no browser can flash them. Files dropped in are hashed in the page and checked against the official SHA-256 for that build before anything is written, and every automated step prints the adb and fastboot commands it stands in for — so it is still a correct, ordered, device-specific command list in a browser without WebUSB. Verified end to end on a Pixel 4a, from bootloader unlock through to a booted LineageOS.