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Knutwurst
fcd43b54ae
Write param.json + icon0.png into /user/app/<TITLE_ID>/sce_sys/, then call sceAppInstUtilAppInstallTitleDir to register the directory as an app. No package, no code signing — the installer reads the metadata files directly. The tile uses TITLE_ID PTDL00001 and deeplinkUri http://127.0.0.1:12880/, so tapping it opens PatchDL's own UI in the on-console browser. Only useful while the ELF is running. Asset pipeline: param.json + icon0.png live under assets/ and get .incbin'd straight into .rodata. Makefile lists them as TILE_ASSETS so a touch on either forces a relink. Stat-guard: file_matches() diffs each asset against the on-disk copy first; when nothing changed the install API isn't called at all. Keeps repeated payload starts from re-registering the app. Repeated /api/install_tile calls return "already installed and up to date". Backend lazy-load: AppInstUtil isn't mapped until something pokes it, so the helper polls patchdl_install_backend_check() for up to ~15 s before resolving sceAppInstUtilAppInstallTitleDir. Wiring: /api/install_tile POST triggers the install on demand; patchdl_websrv_start() runs it at startup when home_shortcut is on; and flipping the toggle from off to on in /api/config also fires it. All three paths share the stat-guarded helper so they're safe to repeat.
