perf: cache blurred wallpaper to disk to avoid re-blur on startup

First launch with blur blurs and saves to ~/.cache/moonlock/. Subsequent starts load the cached PNG directly. Cache invalidates when wallpaper path, size, mtime, or sigma changes. Adds dirs crate for cache directory resolution.
2026-03-28 21:23:43 +01:00
parent de9a3e9e6a
commit 48706e5a29
3 changed files with 255 additions and 3 deletions
@@ -14,6 +14,7 @@ gdk-pixbuf = "0.22"
 gio = "0.22"
 toml = "0.8"
 serde = { version = "1", features = ["derive"] }
+dirs = "6"
 nix = { version = "0.29", features = ["user"] }
 zeroize = { version = "1", features = ["derive"] }
 libc = "0.2"