refactor: use jiff instead of time

Cargo.lock

@@ -847,6 +847,7 @@ dependencies = [
  "iced_tiny_skia",
  "id_tree",
  "indexmap 2.13.0",
+ "jiff",
  "keyframe",
  "libcosmic",
  "libdisplay-info",
@@ -868,7 +869,6 @@ dependencies = [
  "smithay",
  "smithay-egui",
  "thiserror 2.0.18",
- "time",
  "tiny-skia",
  "tracing",
  "tracing-journald",
@@ -3537,15 +3537,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "num_threads"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c7398b9c8b70908f6371f47ed36737907c87c52af34c268fed0bf0ceb92ead9"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "objc"
 version = "0.2.7"
@@ -5322,9 +5313,7 @@ checksum = "743bd48c283afc0388f9b8827b976905fb217ad9e647fae3a379a9283c4def2c"
 dependencies = [
  "deranged",
  "itoa",
- "libc",
  "num-conv",
- "num_threads",
  "powerfmt",
  "serde_core",
  "time-core",